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DRAINAGE REPORT
ALLINGTON EXTENSION
FCC
100509-XX-RP-D-501
13 JULY 2020
DERBYSHIRE Cromford Mills, Mill Lane, Matlock, Derbyshire. DE4 3RQ T: 01773 829988
DRAINAGE REPORT ALLINGTON EXTENSION FCC 100509-XX-RP-D-501
Current Document Details
Authors
Jon Rimmer
Issued by
Jon Rimmer……………………………………………… Enter Name
Approved by
Mark Bradbury…………………………………………… Enter Name
Document1
Document Revisions
Rev Date Author Checked Approved
A
06/03/2020
JPR
MSB
MSB
B
20/03/2020
JPR
MSB
MSB
C
26/06/2020
JPR
MSB
MSB
D
13/07/2020
JPR
MSB
MSB
ALLINGTON EXTENSION, ALLINGTON
DRAINAGE REPORT
Produced by IDOM For FCC
Reference : 100509-XX-RP-D-501, June 2020
TABLE OF CONTENTS
SECTION 1 INTRODUCTION ............................................................................................... 1
1.1 PURPOSE OF THE REPORT .............................................................. 1
1.2 LOCATION AND SETTING .................................................................. 1
1.3 PROPOSED DEVELOPMENT ............................................................. 4
1.4 METHODOLOGY .................................................................................. 4
SECTION 2 EXISTING DRAINAGE ...................................................................................... 5
2.1 LAND DRAINAGE ................................................................................. 5
2.2 ROOF DRAINAGE ................................................................................ 6
2.3 SURFACE DRAINAGE ......................................................................... 7
2.4 FOUL DRAINAGE ................................................................................. 7
2.5 APPROVALS AND CONSENTS ........................................................... 7
2.6 HYDRAULIC MODELLING ................................................................... 7
SECTION 3 PROPOSED DRAINAGE ................................................................................... 9
3.1 LAND DRAINAGE ................................................................................. 9
3.2 ROOF DRAINAGE ................................................................................ 9
3.3 SURFACE DRAINAGE ......................................................................... 9
3.4 FOUL DRAINAGE ............................................................................... 11
3.5 APPROVALS AND CONSENTS ......................................................... 11
3.6 ILLUSTRATIVE DRAINAGE DESIGN ................................................ 12
3.7 HYDRAULIC CALCULATIONS ........................................................... 12
3.8 DIVERSIONS ...................................................................................... 14
SECTION 4 SUMMARY AND CONCLUSION ..................................................................... 15
4.1 LAND DRAINAGE ............................................................................... 15
4.2 ROOF DRAINAGE .............................................................................. 15
4.3 SURFACE DRAINAGE ....................................................................... 15
4.4 FOUL DRAINAGE ............................................................................... 15
4.5 APPROVALS AND CONSENTS ......................................................... 16
APPENDIX 1 ........................................................................................................................... 17
▪ 100509-00-DR-C-500, Existing Drainage GA (Full Site) 17
▪ 100509-00-DR-C-501, Existing Drainage GA Sheet 1 17
▪ 100509-00-DR-C-502, Existing Drainage GA Sheet 2 17
▪ 100509-00-DR-C-503, Existing Drainage GA Sheet 3 17
▪ 100509-00-DR-C-504, Existing Drainage GA Sheet 4 17
APPENDIX 2 ........................................................................................................................... 18
▪ Existing Drainage Network 1 - Hydraulic Calculations (Roof & Land) 18
▪ Existing Drainage Network 2 – Hydraulic Calculations (Surface) 18
APPENDIX 3 ........................................................................................................................... 19
▪ 100509-01-DR-C-500, Indicative DrainageGA (Full Site) 19
ALLINGTON EXTENSION, ALLINGTON
DRAINAGE REPORT
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Reference : 100509-XX-RP-D-501, June 2020
▪ 100509-01-DR-C-501, Indicative Drainage GA Sheet 1 19
▪ 100509-01-DR-C-502, Indicative Drainage GA Sheet 2 19
▪ 100509-01-DR-C-503, Indicative Drainage GA Sheet 3 19
▪ 100509-01-DR-C-504, Indicative Drainage GA Sheet 4 19
APPENDIX 4 ........................................................................................................................... 20
▪ Proposed Drainage Network 1 - Hydraulic Calculations (Surface) 20
▪ Proposed Drainage Network 2 - Hydraulic Calculations (Roof & Land) 20
▪ Proposed Drainage Network 3 - Hydraulic Calculations (Land) 20
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Reference : 100509-XX-RP-D-501, June 2020 Page 1
SECTION 1 INTRODUCTION
1.1 PURPOSE OF THE REPORT
1.1.1 Idom Merebrook Ltd (Idom) have been appointed by FCC Environment (UK) Ltd
(FCC) to provide a drainage report (the Report) in support of the PIER for an
extension (the ‘Proposed Extension’) to the existing Integrated Waste Management
Facility at Allington (the ‘Existing Station’). The extended Station (Existing Station
with the Proposed Extension), is hereafter referred to as the ‘Generating Station’.
1.1.2 This Report assesses the drainage associated with the Existing Station and considers
the impact of the Proposed Extension on both foul and surface water drainage.
1.1.3 As set out in Chapter 5 of the Preliminary Environmental Information Report (PEIR),
the PIER has been prepared with certain elements of the Propsoed Extension fixed
and other elements of the proposed Extension that are based upon a series of design
parameters, the detailed design of which would be confirmed following the grant of
the DCO. The fixed elements of the Proposed Extension and design parameters that
have formed the basis of this Report, comprise the following:
• The maximum extents of the main building envelope for the Proposed
Extension (which are fixed elements of the Proposed Extension);
• The maximum impermeable area that could be constructed in connection
with the Proposed Extension (in accordance with the proposed parameters);
and
• The area that would need to be the subject of land drainage following
construction of the Proposed Extension.
1.1.4 The aim of this Report is to demonstrate that a drainage strategy and design can be
developed for the PE that would result in negligible impacts on the public foul and
surface water drainage network.
1.1.5 Whilst the drainage strategy and the associated drainage calculations have been
based upon the aforementioned parameters, an illustrative drainage design has
been prepared, which shows how the drainage strategy could be applied to the
Generating Station.
1.1.6 The detailed design of the surface water drainage scheme would be secured via a
requirement within the DCO.
1.2 LOCATION AND SETTING
1.2.1 The Site is located in Maidstone, to the north of Allington, close to junction 5 of the
M20 at OS coordinates 573880,157850. The nearest postcode is ME16 0LE.
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1.2.2 The Site is accessed from Laverstoke Road and is bound to the east by the 20/20
Business Park. The northern boundary is formed by the M20 and the A20 forms the
western and part of the southern boundary. St Laurence Avenue extends along the
remainder of the southern boundary.
1.2.3 A topographical survey of the Site is provided within Figure 5.4a of the PEIR. This
shows that the Existing Station sits in a bowl, well below the level of the surrounding
roads. An artificial bund has been created within the Site around the Existing Station.
Within the western part of the Site there is an existing pond (the Western Pond),
which forms a functional part of the existing drainage infrastructure.
1.2.4 The Existing Station is operated by Kent Enviropower Limited (KEL) which is a wholly
owned subsidiary of FCC. Approximate level and area information is provided in
Table 1.
Table 1, Summary of existing site information
Characteristic Value
Area within FCC ownership 30 ha
Approximate plan area of the existing station 3.7 ha
Pond level 10 m AOD
Approximate ground level of the existing station IWMF
16 to 20 m AOD
Ridge level at boundary 26 to 34 m AOD
Ridge level within Site 38 m AOD
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1.2.5 Figure 1 shows an aerial image of the Site and illustrates the approximate extent of
the Site ownership (blue), the main built components of the Existing Station (green)
and the boundary of the Proposed Extension (red) (excluding the relocated perimeter
screen bank earthworks). The Western Pond is also indicated.
Figure 1, Location and boundaries
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1.3 PROPOSED DEVELOPMENT
1.3.1 The proposal is for an extension to the existing waste to energy facility at the
Allington IWMF, which would provide additional waste processing capacity and
energy generation. The Proposed Extension would include a new main process
building, access roads, parking, vehicle circulation and maneuvering areas and other
ancillary development.
1.3.2 In order to accommodate the Proposed Extension, it would be necessary to carry out
re-profiling the existing bund and other associated areas of made ground (
associated with previous landfilling and the construction of the Existing Station) that
are in place around the Existing Station.
1.3.3 A detailed description of the Site, the Existing Station and the Proposed Extension are
provided within Chapter 5 of the PEIR.
1.4 METHODOLOGY
1.4.1 An initial assessment of the existing drainage infrastructure associated with the
Existing Station, leads to the conclusion that a sensible approach to the drainage
strategy would be to integrate the Proposed Extension into the existing drainage
network, making use of the existing management and discharge regime and
providing additional storage and/or attenuation where required.
1.4.2 A benefit of this approach would be to ensure that there is no increase in peak run-
off from the Generating Station, whilst providing minimal change to the on-going
maintenance regime.
1.4.3 As-built information has therefore been used to ascertain an understanding of the
current drainage arrangements and to allow the creation of hydraulic surface water
drainage modelling for the existing drainage regime.
1.4.4 An indicative drainage layout has been developed using the same principles that were
used for the Existing Station.
1.4.5 Integrated hydraulic modelling of the existing and proposed surface water drainage
has been produced and compared to the original model. Attenuation has been
incorporated into the new hydraulic modelling, where required, to ensure that the
drainage strategy for the Proposed Extension would have no adverse effect on
flooding and would offer no increase to off-site runoff.
1.4.6 Consideration has also been given to proposed changes to the foul drainage regime
and details are provided that demonstrate the Proposed Extension could be
developed without increasing the existing rate of foul water discharge.
1.4.7 The design takes due cognisance of and complies with the following standards:
• National Planning Statements EN-1 / EN-3
• National Planning Policy Framework (NPPF)
• Building Regulations Part H
• CIRIA C697, SuDS Manual
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SECTION 2 EXISTING DRAINAGE
2.1 LAND DRAINAGE
2.1.1 As built information provided by FCC confirms that a land drain is installed around
the perimeter of the Existing Station. The catchment for this drain is all the land above
the drain which forms the embankments around the Existing Station up to
embankment ridge level.
2.1.2 The existing land drain is shown on the following Idom drawings (Appendix 1):
100509-00-DR-C-500, Existing Drainage GA (Full Site)
100509-00-DR-C-501, Existing Drainage GA Sheet 1
100509-00-DR-C-502, Existing Drainage GA Sheet 2
100509-00-DR-C-503, Existing Drainage GA Sheet 3
100509-00-DR-C-504, Existing Drainage GA Sheet 4
2.1.3 The land drainage varies from a minim diameter of 150 mm and is shown to
discharge via a 1,200 mm drain to the western Pond located within the north west
corner of the Site, which provides both attenuation and infiltration. The normal water
level of the western Pond is some 6m below the lowest site level (16 mAOD).
2.1.4 The Western Pond also provides drainage for the roof of the Existing Station and
provides attenuation and infiltration to the remainder of the bowl- shaped catchment
area. Table 2 provides an assessment of the attenuation provided by the Western
Pond.
2.1.5 Figure 2 shows how the Western Pond area has been conservatively measured,
highlighting that an additional area (and additional capacity) is available. The
assessment of the Western Pond and the level of attenuation / infiltration it offers has,
therefore, been carried out on a conservative basis
Table 2, Existing pond assessment
Characteristic Value
Approximate full catchment area 30 ha
Approximate existing facility (drained) area 3.7 ha
Estimated contributing area 26.3 ha
Estimated infiltration Rate 1x10-4 m/s
Estimated Attenuation Required (100 year +40%)
13,000 m3
Approximate pond area 3,768 m2
Average depth required 3.45 m
Actual pond depth 4 m (@ 14 mAOD)
Actual depth available 6 m (@ 16 mAOD)
Pond area at 16 mAOD 26,260 m2
Available volume at 16 mAOD 78,780 m3 (six times the required volume)
2.1.6 The information provided in Table 2 demonstrates that whilst the Western Pond
created as part of the restoration of that area of the Site may not be sized for the 100
year +40% storm event, the levels, depths and areas available for storage are
capable of providing significantly more attenuation volume than is required.
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2.1.7 As the lowest site level where the Western Pond is located the ground level is at
16m AOD and given the significant volume available within the Western Pond, for the
purposes of hydraulic modelling, a free discharge to the Western Pond has been
assumed.
2.1.8 The Site lies within a groundwater source protection zone and therefore only clean
(non-polluted) water should be allowed to discharge to the Western Pond.
2.1.9 The wider site contains made ground which always presents the risk of unknown
contaminants being mobilised by groundwater flow. This is the assumed reason why
infiltration has not been utilised in connection with the Existing Station.
Figure 2, Approximate pond area at 14 mAOD
2.2 ROOF DRAINAGE
2.2.1 As built information provided by FCC confirms that the run-off from the main roof of
the Existing Station discharges to a recycling tank, which in turn, overflows to the
1200 mm diameter land drainage outfall (to the Western Pond).
2.2.2 The existing roof drainage is shown on the following Idom drawings (Appendix 1):
100509-00-DR-C-500, Existing Drainage GA (Full Site)
100509-00-DR-C-501, Existing Drainage GA Sheet 1
100509-00-DR-C-502, Existing Drainage GA Sheet 2
100509-00-DR-C-503, Existing Drainage GA Sheet 3
100509-00-DR-C-504, Existing Drainage GA Sheet 4
2.2.4 The roof area has been included in the assessment of the Pond provided in Table 2.
2.2.5 For the purposes of the hydraulic modelling, the recycling tank is assumed to be full
and therefore, its volume has been ignored.
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2.3 SURFACE DRAINAGE
2.3.1 As-built records supplied by FCC show that run-off from surface water around the
Existing Station is collected by means of a traditional trapped gully & pipe system,
before being discharged by pump to the public surface water sewer in Laverstock
Road.
2.3.2 The existing surface water drainage is shown on Idom drawings (Appendix 1):
100509-00-DR-C-500, Existing Drainage GA (Full Site)
100509-00-DR-C-501, Existing Drainage GA Sheet 1
100509-00-DR-C-502, Existing Drainage GA Sheet 2
100509-00-DR-C-503, Existing Drainage GA Sheet 3
100509-00-DR-C-504, Existing Drainage GA Sheet 4
2.3.3 As the Site is within a groundwater source protection zone, infiltration of run-off from
areas that are at risk of pollution is not acceptable therefore, traditional petrol/oil
interceptors are used to control the risk of pollution from hydrocarbons.
2.3.4 The pump has a maximum flow rate of 100 l/s, and an existing purpose-built
attenuation lagoon (the Eastern Lagoon) located to the north east of the Existing
Station provides the necessary attenuation.
2.3.5 The Eastern Lagoon is oversized and provides additional attenuation capacity for
water recycling referred to above. This additional attenuation built into the Eastern
Lagoon has been ignored for the purposes of hydraulic modelling. The available
volume within the Eastern lagoon is therefore assumed to be 1,034 m3.
2.4 FOUL DRAINAGE
2.4.1 FCC have confirmed that the Existing Station benefits from a trade effluent consent
from Southern Water to discharge 50 m3/day to the public foul sewer at a maximum
rate of 36 l/s.
2.4.2 Records show that the installed foul pumping station has a maximum operating flow
rate of 10 l/s, this includes both domestic and trade effluent.
2.5 APPROVALS AND CONSENTS
2.5.1 The surface water discharge rate of 100 l/s is assumed to have been agreed with
Southern Water at the time of construction.
2.5.2 The foul water discharge is covered by a trade effluent discharge license set at 50
m3/day and 36 l/s, as previously noted.
2.6 HYDRAULIC MODELLING
2.6.1 There are effectively two existing surface water drainage networks serving the
Existing Station, one for clean water and one for surface water: Network 1 includes
the roof of the Existing Station and land drainage runoff which discharges to the
Western Pond; Network 2 includes the surface water runoff from the hardstanding
areas associated with the Existing Station and is controlled by a pump and the
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Eastern Lagoon.
2.6.2 The hydraulic modelling software package ‘Causeway Flow’ has been used to model
the existing networks and the calculation output is included within Appendix 2.
Calculations are provided for both the Flood Studies Report (FSR) and Flood
Estimation Handbook (FEH) methods of calculating rainfall levels.
2.6.3 The existing drainage infrastructure was designed more than 14 years ago and
became operational in 2008, and as such, cannot be expected to meet current
standards. However, the proposed drainage strategy requires the integration of the
new and existing drainage systems, and the new drainage system would be required
to meet current standards.
2.6.4 To provide a baseline condition the ‘existing’ models have been tested against
current standards. The calculation outputs show that some localised flooding does
occur, as would be expected. This baseline flooding should not be increased by the
addition of the drainage arising as a result of the Proposed Extension.
2.6.5 Table 3 provides a summary of the baseline flooding for the current standard design
storm of 100 years plus 40% climate change allowance. (Climate change
allowance based on https://www.gov.uk/guidance/flood-risk-assessments-
climate-change-allowances)
Table 3, 100 year +40% existing Baseline Flooding
Manhole Reference FSR Method Flood Volume (m3)
FEH Method Flood Volume (m3)
1.1 1.7 6.2
2.1 28.7 33.5
2.3 4.3 5.1
2.4 12.6 15.0
3.0 18.3 29.3
5 1.1
6 2.4
8 12.8 15.9
8.1 1.5
9 7.7 10.2
9.1 2.1 2.4
11 5.1 6.9
11.1 33.7 37.6
12 111.3 122.5
13 45 52.1
18 5 6.2
18.1 5.8 6.9
23 4.6 5.9
100 26.3 28.7
101 73.0 81.1
103 174.4 193.5
112 0.9 4.1
117 11.4 18.9
TOTAL, PRE-DEVELOPMENT 584.7 687
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SECTION 3 PROPOSED DRAINAGE
3.1 LAND DRAINAGE
3.1.1 In-keeping with the approach that has been adopted for the Existing Station, a land
drain is shown on the indicative drainage drawings extended around the boundary
of the Proposed Extension and this is shown to be connected to the land drainage
infrastructure around the Existing Station.
3.1.2 The new land drainage system would discharge into the Western Pond in the same
way as the existing land drainage system. An assessment of how the attenuation
within the Pond would be impacted by the new land drainage system is provided in
Table 4.
3.1.3 The changes to the contributing area as a result of the Proposed Extension would
be beneficial on the basis that they would reduce the contributing area and thereby
reduce the amount of land drainage that is directed to the Western Pond.
Table 4, Pre and Post Development – Pond Assessment
Characteristic Value
Contributing Area – Pre-development 26.3 ha
Omitted from Contributing Area- Site Area 5.1 ha
Addition to Contributing Area- New Roof 0.8 ha
Contributing Area – Post-development 22.0 ha
Change to Contributing area Reduction of 4.3 ha
3.2 ROOF DRAINAGE
3.2.1 Taking the same approach as the Existing Station, the roof water is not at risk from
pollution and can be discharged to the Western Pond. In light of this, the drainage
strategy would include a new dedicated ‘roof water only’ drainage network that would
collect roof water from both the Existing Station and the Proposed Extension. The
water collected in the system would be discharged into the Western Pond as
indicated on the indicative drainage drawings.
3.2.2 An assessment of how the Western Pond would be impacted by the introduction of
the roof water from the Proposed Extension is provided in Table 4. It demonstrates
that the additional roof water that would be generated by the Proposed Extension
would be more than off-set by the consequential reduction in the amount of land
drainage that would be discharged to the Pond following the development of the
Proposed Extension. This would result in a reduction in the overall volume of land
drainage and roof drainage that would need to be attenuated within Pond following the
construction of the Proposed Extension.
3.3 SURFACE DRAINAGE
3.3.1 Surface water drainage arising from the Proposed Extension is at risk of pollution
from hydrocarbons. Given that the Site is over a groundwater source protection zone
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the same approach to surface water drainage would be adopted to that which is
currently in place at the Existing Station.
3.3.2 The drainage strategy proposes the use of a traditional trapped gully and pipe
system, with petrol/oil separators to manage the risk of pollution. All channels and
gullies would be suitable for the intended site use and would be fitted with heavy
duty covers and grates to accommodate heavy vehicle loading.
3.3.3 The surface water network associated with the Proposed Extension would be
collected in a dedicated system of below ground pipework and newly constructed
attenuation lagoon, which would connect to the existing surface water drainage
system, before ultimately discharging into the existing surface water attenuation
lagoon (located immediately to the north east of the existing station).
3.3.4 The below ground surface water connection system for the Proposed Extension
would be designed to ensure that surface water drainage arising from the Proposed
Extension would be attenuated to the extent that it would prevent any impact on flows
within the existing drainage system.
3.3.5 The necessary level of attenuation would be provided by an attenuation lagoon(New
Lagoon) in combination with oversized pipework and the introduction of a flow control
device upstream of the connection point between the existing and proposed
systems.
3.3.6 Table 5 provides an assessment of the pre and post development characteristics of
the surface water drainage network.
Table 5, Pre and Post Development Surface Water Assessment
Characteristic Pre-development Post development
Contributing Area (Surface Water)
3.7 ha 3.7 + 4.3 = 8 ha
Lagoon(s) Volume (Attenuation) existing Eastern and New Lagoon
1,034 m3 1,034 + 2,043 = 3,077 m3
Maximum Discharge Rate (Pumped)
100 l/s 100 l/s
3.3.7 The new drainage infrastructure would be designed to comply with building
regulations and would have sufficient capacity to cater for a 1 in 100 year plus climate
change (a 40% increase in rainfall intensity) storm event, and demonstrate only
minor (less than 5 m3) flooding. This is verified in the hydraulic calculations
contained within Section 3.7.
3.3.8 By introducing sufficient attenuation within a new lagoon and by balancing the flows
around the Site using a new flow control device, the drainage design strategy would
ensure that there is no increase in the maximum off-site surface water flowrate (100
l/s pumped), and that no new off-site surface water connections are required.
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3.4 FOUL DRAINAGE
3.4.1 At the present time trade effluent arising from the operation of the Existing Station is
discharged into the sewer under a trade effluent licence with Southern Water. The
license allows for the discharge of up to 50m3 of trade effluent each day. The
Proposed Extension represents an opportunity to rationalise the management of
trade effluent arising from the Generating Station (i.e. the Existing Station and the
Proposed Extension).
3.4.2 The trade effluent currently constitutes varying quantities of contaminated run-off and
waste process water. As part of the planned extension works, FCC are proposing to
implement recycling of all process water across the existing and extended Station.
The Proposed Extension also allows the area contributing contaminated run- off to
be re-designated to reduce the risk of contamination.
3.4.3 The area will become a normal circulation area which will be drained as surface
water runoff. The additional area has been included within the hydraulic drainage
model calculations.
3.4.4 These actions combined, will remove the need for a trade effluent discharge from
the Site and will remove up to 50m3 per day from the public foul sewer network.
3.4.5 In addition to the recycling of process water the drainage strategy also proposes the
installation of a package treatment facility at the Site for the on-site treatment of foul
drainage arising from the additional staff associated with the Proposed Extension
(circa 30 full time equivalents).
3.4.6 The water recovered from the package treatment plant would be re-used as process
water within the Proposed Extension. The solid residues would be removed from the
Site via a tanker. This would equate to around 2,700 l/day (2.7 m3/day) of effluent
that would not need to be discharged to sewer.
3.4.7 The drainage strategy associated with the Proposed Extension would result in a
removal of the need to discharge trade effluent into the sewer, and no increase in
domestic flows from the Site. This would result in a reduction in foul water flows from
the Generating Station and, therefore, foul sewer capacity need not be considered
further.
3.5 APPROVALS AND CONSENTS
3.5.1 The existing surface water discharge rate of 100 l/s will not be affected as a result of
the Proposed Extension . Southern Water have confirmed (in an e-mail on the 11th
June 2020) that this flow rate remains acceptable for the discharge of surface water
from the Generating Station.
3.5.2 The volume of foul water discharge from the Site is being significantly reduced by the
introduction of process water recycling (for both the Existing Station and the
Proposed Extension) and a packaged treatment plant for the recycling of domestic
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foul water flows from the Proposed Extension. The acceptability of these proposals
was confirmed by Southern Water in an e-mail on the 11th June 2020.
3.5.3 The proposed Drainage Strategy would not necessitate any new off-site connections
for either foul or surface water, nor would it result in an increase in the peak flow
rates.
3.6 ILLUSTRATIVE DRAINAGE DESIGN
3.6.1 To allow a better understanding of how the proposed Drainage Strategy would work
in practice, the outline drainage design has been conceptualised on the indicative
site layout drawings contained within Appendix 3:
100509-01-DR-C-500, Indicative Drainage GA (Full Site)
100509-01-DR-C-501, Indicative Drainage GA Sheet 1
100509-01-DR-C-502, Indicative Drainage GA Sheet 2
100509-01-DR-C-503, Indicative Drainage GA Sheet 3
100509-01-DR-C-504, Indicative Drainage GA Sheet 4
3.6.2 It is anticipated that the detailed design of the surface water drainage scheme would
be secured via a Requirement within the DCO.
3.7 HYDRAULIC CALCULATIONS
3.7.1 Whilst the detailed drainage design is to be confirmed, it has been possible to
prepare a series of hydraulic calculations based upon the maximum site parameters
described previously. The hydraulic calculation demonstrates that the drainage
strategy would be effective in managing surface and foul water flows arising from the
Generating Station.
3.7.2 There would effectively be three surface water drainage networks serving the
Generating Station, two for clean water and one for surface water: Network 1 would
include the surface water runoff (hardstandings) and is controlled by a pump,
Network 2 would include the roof and land drainage runoff which would discharge
into the Western Pond and Network 3 would include land drainage runoff which
would discharge into the Western Pond.
3.7.3 The hydraulic modelling software package ‘Causeway Flow’ has been used to model
the existing drainage networks and the calculation output is included within Appendix
4.
3.7.4 The drainage associated with the Proposed Extension would be designed to meet
the following criteria: minimal pipe surcharging for a 1 in 1 year storm event; no
flooding for a 1 in 30 storm event and minimal controlled (onsite) flooding for a 1 in
100 year event. Provision for climate change has been made by adding 40 % to the
rainfall intensities of the 1 in 100 year storm event.
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Reference : 100509-XX-RP-D-501, June 2020 Page 13
3.7.5 Section 2.6 of this Report sets the baseline criteria for the hydraulic modelling, which
is to ensure that the Proposed Extension does not impact on the Existing Station.
Table 7 (FSR) and Table 8 (FEH) compare the baseline scenarios to the post
development scenario for the 1 in 100 year storm event (+ 40% climate change
allowance.
Table 6 Baseline Comparison (FSR), Pre and Post Development.
Manhole Reference Pre-Development Flood Volume (m3)
Post-Development Flood Volume (m3)
Change (m3)
1.1 1.7 1.7 0 2.1 28.7 28.6 -0.1 2.3 4.3 4.6 0.3 2.4 12.6 12.1 -0.5 3.0 18.3 16.3 -2 8 12.8 14.0 1.2 9 7.7 7.0 -0.7
9.1 2.1 2.1 0 11 5.1 5.0 -0.1
11.1 33.7 33.6 -0.1 12 111.3 114.8 3.5 13 45.0 45.3 0.3 18 5.0 2.8 -2.2
18.1 5.8 5.6 -0.2 23 4.6 4.8 0.2 100 26.3 26.8 0.5 101 73.0 74.0 1 103 174.4 174.0 -0.4 112 0.9 0 -0.9 117 11.4 0 -11.4
TOTAL 584.7 573.1 -11.6
ALLINGTON EXTENSION, ALLINGTON
DRAINAGE REPORT
Produced by IDOM For FCC
Reference : 100509-XX-RP-D-501, June 2020 Page 14
Table 7 Baseline Comparison (FEH), Pre and Post Development.
Manhole Reference Pre-Development Flood Volume (m3)
Post-Development Flood Volume (m3)
Change (m3)
1.1 6.2 6.5 0.3
2.1 33.5 33.1 -0.4
2.3 5.1 6.5 1.4
2.4 15 14.3 -0.7
3.0 29.3 26.7 -2.6
5 1.1 -1.1
6 2.4 2.4 0
8 15.9 17.5 1.6
8.1 1.5 1.1 -0.4
9 10.2 9.1 -1.1
9.1 2.4 2.4 0
11 6.9 6.9 0
11.1 37.6 37.4 -0.2
12 122.5 127.2 4.7
13 52.1 52.3 0.2
18 6.2 3.5 -2.7
18.1 6.9 6.8 -0.1
23 5.9 6.0 0.1
100 28.7 29.0 0.3
101 81.1 81.9 0.8
103 193.5 193.3 -0.2
112 4.1 0 -4.1
117 18.9 0 -18.9
TOTAL 687 663.9 -23.1
3.7.6 Table 7 and Table 8 demonstrate that implementation of the proposed drainage
strategy would lead to an overall reduction in flood risk following the development of
the Proposed Extension. The FSR method demonstrates a reduction in flood risk of
11.6 m3, while the FEH method demonstrates a reduction of 23.1m3. The drainage
strategy would, therefore, offer an improvement on the baseline scenario for the
Existing Station.
3.8 DIVERSIONS
3.8.1 To facilitate the Proposed Extension a small number of private drainage diversions
are required. These are noted on the indicative drainage drawings and have been
included within the hydraulic calculations. They may change once the detailed
design of the Proposed Extension has been confirmed.
ALLINGTON EXTENSION, ALLINGTON
DRAINAGE REPORT
Produced by IDOM For FCC
Reference : 100509-XX-RP-D-501, June 2020 Page 15
SECTION 4 SUMMARY AND CONCLUSION
4.1 LAND DRAINAGE
4.1.1 The post development land drainage regime mimics the pre-development scenario.
4.1.2 The post-development proposals demonstrate a net reduction of 4.3 ha in the area
contributing to the catchment of the Pond.
4.1.3 The development of the Proposed Extension and the associated earthworks would
not impact on the available attenuation volume within the Western Pond.
4.1.4 The Proposed Extension would offer a net benefit to the hydraulic performance of
the Western Pond.
4.2 ROOF DRAINAGE
4.2.1 Roof Water would be managed from the Proposed Extension in the same way as
the Existing Station and would be directed to the Western Pond for attenuation and
infiltration. Whilst the additional water arising from the roof area would add to the
catchment of the Western Pond, this would not exceed the reduction in the land
drainage flows to the Western Pond. As such, the net effect of the Proposed
Extension would be to reduce the overall contributing area.
4.2.2 As a result of the overall catchment alterations, the roof drainage would not impact
on the hydraulic performance of the Western Pond.
4.3 SURFACE DRAINAGE
4.3.1 The surface water drainage strategy proposes the integration of the surface water
drainage infrastructure required in connection with the Proposed Extension with the
existing drainage network. The system would be designed to utilise the existing
pumped off-site discharge and maintain the maximum pumped discharge rate of 100
l/s.
4.3.2 Hydraulic calculations demonstrate that proposed drainage strategy would allow for
the introduction of the Proposed Extension and associated areas of hardstanding
without exceeding the requirements of current drainage legislation and regulations
and without changing the flood risk associated with the Existing Station.
4.3.3 In order to achieve this, it would be necessary to introduce a new surface water
attenuation lagoon with an additional 2,043 m3 of attenuation, together with
oversized pipes and a flow control device.
4.4 FOUL DRAINAGE
4.4.1 It is proposed that following the development of the Proposed Extension all process
water (trade effluent) from the Generating Station would be recycled and re-used in
ALLINGTON EXTENSION, ALLINGTON
DRAINAGE REPORT
Produced by IDOM For FCC
Reference : 100509-XX-RP-D-501, June 2020 Page 16
the energy generation process. This would remove the need for the existing trade
effluent discharge from the Site.
4.4.2 In addition to the proposals for the re-use of trade effluent, domestic foul flows from
the Proposed Extension would also be directed to a package treatment plant, which
would treat effluent on site. The water processed in the treatment plant would be re-
used as process water in the Proposed Extension and the remaining solid residue
would be removed from site by tanker. The anticipated flows are such that only a
limited number of tankers would be required to service the facility each week.
4.4.3 In combination these measures would mean that the Proposed Extension would result
in no increase in domestic foul water flows from the Site and a significant overall
reduction in overall flows to the foul sewer through the recycling and re-use of
process water. This would result in a net reduction of 50m3 of trade effluent each
day.
ALLINGTON EXTENSION, ALLINGTON
DRAINAGE REPORT
Produced by IDOM For FCC
Reference : 100509-XX-RP-D-501, June 2020 Page 17
4.5 MAINTENANCE
4.5.1 A maintenance regime should be enacted regularly as part of the normal facilities
management duties.
4.5.2 The following is a maintenance schedule that could be followed and updated as
necessary throughout the lifetime of the development. As there will be no significant
SuDS features other than the Western Pond on the Site, there is no need to provide
a SuDS maintenance plan.
4.5.3 The Developer’s Drainage Management Plan and maintenance regime should be
enacted regularly as part of the normal facilities management duties.
4.5.4 The following is an example manhole/pipework/gulley maintenance schedule that
should be followed and updated throughout the life time of the development. A
separate schedule of pump and electrical systems maintenance should be
implemented for the pumped systems.
ALLINGTON EXTENSION, ALLINGTON
DRAINAGE REPORT
Produced by IDOM For FCC
Reference : 100509-XX-RP-D-501, June 2020 Page 18
4.6 APPROVALS AND CONSENTS
4.6.1 The proposals do not require any new off-site connections or any increase to existing
peak flow rates. FCC willhowever consult with the water authority to confirm the
proposals.
ALLINGTON EXTENSION, ALLINGTON
DRAINAGE REPORT
Produced by IDOM Reference : 100509-XX-RP-D-501, June 2020 For FCC
APPENDIX 1 ▪ 100509-00-DR-C-500, Existing Drainage GA (Full Site)
▪ 100509-00-DR-C-501, Existing Drainage GA Sheet 1
▪ 100509-00-DR-C-502, Existing Drainage GA Sheet 2
▪ 100509-00-DR-C-503, Existing Drainage GA Sheet 3
▪ 100509-00-DR-C-504, Existing Drainage GA Sheet 4
BT IC
BT IC
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MH
MH
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MH
MH
BT IC
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MH
MH
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MH
MH
MH
BT IC
Gu
Sign
MH
Gu
Gu
MH
MH
MH
Gu
Gu
Gu
MH
MH
Cont'
Box
Gu
Gu
Gu
Gu
Gu
Gu
Gu
Gu
Gu
Gu
Gu
MH
MH
BT IC
BT IC
MH
Sign
Sign
BT IC
Cont'
Box
MH
MH
MH
Cont'
Box
Cont'
Box
MH
COACH
MH
MH
MH
MH
MH
MH
MH
MH
MH
MH
MH
MH
MH
MH
MH
MH
MH
MH
Container Store
MH
MH
MH
MH
Gas Store
Fuel
Oil
MH
MH
A/C Units
MH
MH
MH
MH
MH
Gu
Gu
Gu
MH
MH
MH
MH
MH
MH
MH
MH
Gu
MH
MH
MH
Gu
Gu
Gu
Gu
Gu
MH
MH
MH
MH
MH
Gu
Gu
Gu
Gu
Gu
MH
MH
MH
MH
MH
MH
MH
MH
MH
MH
Gu
Gu
Gu
Gu
Gu
Gu
Gu
MH
MH
MH
MH
MH
MH
MH
MH
MH
Con't
Box
HV Equipment
MH
MH
MH
MH
Gu
Sign
O/H Sign
Sign
MH
MH /FH
MH
MH
Gu
Gu
Gu
Gu
Gu
Gu
Gu
Gu
Gu
Gu
Gu
Gu
Gu
Gu
F
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Gu
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Gu
Gu
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Temp'
Offices
Temp'
WC
Store
Store
Gu
3
2
3
2
3
0
3
0
2
8
2
8
2
6
2
4
24
2
2
2
2
2
0
1
8
3
4
3
4
3
4
30
3
0
3
0
3
0
3
0
36
3
6
36
3
6
38
3
8
3
8
3
8
38
3
8
34
34
3
4
34
3
4
32
3
2
3
2
3
2
3
2
2
8
2
8
2
8
28
2
8
2
6
2
6
2
6
26
2
6
3
6
3
6
3
6
2
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22
22
2
4
2
4
2
4
2
4
2
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1
6
1
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1
0
20
2
0
20
1
8
1
8
16
16
LA
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RS
TO
KE
R
OA
D
Air C
on
de
nso
r
Lagoon
Stockyard
S
ta
ff C
a
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a
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Car Park
SIn
S1.1
S2
S4
S110
S11.1
S11
S15
S23.4
S20
S101
S102
S103
S104
S12
S120
S125
S126 - OUTFALL
S124
S25.3
S13
S123
S25.2
S23S24
S25.1
S122
S121
SPump in
S23.2
S24.1
S23.3
S25.4
S3
S25
S22
S2.1
S21
S19
S1
S18
S18.1
S100
S2.3
S2.4
S119
S118
S5
S6.1
S7
S117
S116
S10
S6
S115
S9
S114
S113
S9.1
S112
S111
S8
S8.1
S17
RISING MAIN TO PUBLIC SEWER
EXISTING
CONNECTION
TO PUBLIC
SEWER
IL: 20.850
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MH
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BT IC
MH
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BT IC
Cont'
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MH
MH
MH
Cont'
Box
Cont'
Box
MH
COACH
MH
MH
MH
MH
MH
MH
MH
MH
MH
MH
MH
MH
MH
MH
MHMH
MH
MH
Container Store
MH
MH
MH
MH
Gas Store
Fuel
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MH
MH
A/C Units
MH
MH
MH
MH
MH
Gu
Gu
Gu
MH
MH
MH
MHMH
MH
MH MH
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MH
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O/H Sign
Sign
MH
MH /FH
MH
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Gu
Gu
Gu
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Gu
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Gu Gu Gu Gu Gu Gu Gu
Gu
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Offices
Temp'
WC
Store
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Gu
32
32
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3
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30
30
3
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30
30
2
8
28
2
8
2
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26
26
2
6
26
26
24
2
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24
24
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22
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22
22
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18
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34
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30
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1
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1
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14
14
12
10
2
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20
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1
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18
16
16
157500N
157600N
157700N
157800N
157900N
158000N
158100N
158200N
57
33
00
E
57
34
00
E
57
35
00
E
57
36
00
E
57
37
00
E
57
38
00
E
57
39
00
E
57
40
00
E
57
41
00
E
Caravan Park
LONDON ROAD
Police
Traffic
HQ
ST LAURENCE AVENUE
Whatman House
LA
VE
RS
TO
KE
RO
AD
Centre 3000
LIP
HO
OK
WA
Y
Air C
on
de
nso
r
James Villa
Holidays
Sainsbury
Distribution
Warehouse
M20 MOTORWAY
Lagoon
Pond
Stockyard
57
42
00
E
Staff Car Park
Car Park
1 2
43
C.L 22.630
I.L 20.746
F13
KEY
EXISTING SW DRAINAGE
EXISTING ROOF/GROUND WATER
DRAINAGE
EXISTING SW RISING MAIN
EXISTING FW DRAINAGE
EXISTING FW RISING MAIN
Revision
Approved
Frame Dimensions mm
(A0) 1139 x 791
Drawn Checked
Dwg Title
Scale
Dwg No.
Project
Date
Client
17/02/20
Issue Details Dwn App'dChd
FIRST ISSUE
P0
SR JR JR
Cromford Mills, Mill Lane, Matlock, Derbyshire DE4 3RQt: +44(0)1773 829 988 f: +44(0)1773 829 393 e: [email protected]
10
0 10 20 30 40 50m
2468
SCALE 1:500 (A0)
London
Kent
Derbyshire
Manchester
Stirling
N
SURFACE WATER - FULL SITE
EXISTING DRAINAGE GA
Allington Extension
FCC
100509-00-DR-C-500 P3
February 2020
SR JR JR
1:500
SHEET LAYOUT, SCALE 1:12500
NOTES
1. EXISTING DRAINAGE IS BASED ON AS BUILT
INFORMATION PROVIDED BY FCC.
2. ONLY MAIN DRAINAGE IS SHOWN, INDIVIDUAL
CONNECTIONS HAVE BEEN OMITTED FOR CLARITY.
3. THIS DRAWING IS TO BE READ IN CONJUNCTION
WITH IDOM DRAWINGS:
100509-00-DR-C-0500, EXISTING GA
100509-00-DR-C-0501, EXISTING GA SHEET 1
100509-00-DR-C-0502, EXISTING GA SHEET 2
100509-00-DR-C-0503, EXISTING GA SHEET 3
100509-00-DR-C-0504, EXISTING GA SHEET 4
100509-01-DR-C-0500, PROPOSED GA
100509-01-DR-C-0501, PROPOSED GA SHEET 1
100509-01-DR-C-0502, PROPOSED GA SHEET 2
100509-01-DR-C-0503, PROPOSED GA SHEET 3
100509-01-DR-C-0504, PROPOSED GA SHEET 4
PRELIMINARY
COMMENT
TENDER
CONSTRUCTION
ISSUE PURPOSE
INFORMATION
06/03/20
AMENDMENTS FOLLOWING CLIENT COMMENTS
P1
SR JR JR
12/03/20
EXISTING RISING MAIN LINE TYPE AND COLOUR
CHANGED
P2
BMS JR JR
16/03/20
FOUL DRAINAGE ADDED (PROVIDED BY FCC)
P3
BMS JR JR
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Box
Cont'
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MH
COACH
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Fuel
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MH
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28
2
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26
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600Ø GRAD 1 IN 467 1.007
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GRAD 1 IN 175
600Ø
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CL 17.750
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S11
CL 16.985
IL 14.765
S15
CL 15.850
IL 13.700
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225Ø
G
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1
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2
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1 IN
68 7.005
S102
CL 20.000
IL 17.176
S103
CL 18.000
IL 16.567
S104
CL 17.000
IL 14.930
S12
CL 15.600
IL 14.100
S120
CL 15.600
IL 14.500
S125
CL 15.800
IL 12.800
S124
CL 16.350
IL 13.630
S25.3
CL 15.670
IL 13.690
S13
CL 15.700
IL 14.425
S123
CL 16.500
IL 13.850
S25.2
CL 15.775
IL 13.835
S23
CL 15.700
IL 14.280
S24
CL 15.720
IL 14.060
S25.1
CL 15.655
IL 13.955
S122
CL 17.000
IL 14.000
S121
CL 16.900
IL 16.000
SPump in
CL 16.000
IL 13.000
S23.2
CL 16.000
IL 13.050
S24.1
CL 15.670
IL 13.500
S23.3
CL 15.811
IL 13.301
S25.4
CL 15.600
IL 14.200
S3
CL 15.735
IL 13.950
S25
CL 15.690
IL 13.375
S22
CL 16.000
IL 13.715
S2.1
CL 15.950
IL 14.250
S21
CL 18.010
IL 16.430
S2.3
CL 15.760
IL 14.410
S2.4
CL 15.725
IL 13.685
S119
CL 16.500
IL 15.875
S118
CL 16.985
IL 16.008
S5
CL 15.950
IL 14.550
S6.1
CL 17.970
IL 16.250
S7
CL 18.125
IL 15.975
S117
CL 17.200
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IL 16.200
3
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BT IC
BT IC
MH
MH
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Box
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Gu
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32
32
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1
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16
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157500N
157600N
157700N
157800N
157900N
158000N
158100N
158200N
57
33
00
E
57
34
00
E
57
35
00
E
57
36
00
E
57
37
00
E
57
38
00
E
57
39
00
E
57
40
00
E
57
41
00
E
Caravan Park
LONDON ROAD
Police
Traffic
HQ
ST LAURENCE AVENUE
Whatman House
LA
VE
RS
TO
KE
RO
AD
Centre 3000
LIP
HO
OK
WA
Y
Air C
on
de
nso
r
James Villa
Holidays
Sainsbury
Distribution
Warehouse
M20 MOTORWAY
Lagoon
Pond
Stockyard
57
42
00
E
Staff Car Park
Car Park
1 2
43
C.L 22.630
I.L 20.746
F13
KEY
EXISTING SW DRAINAGE
EXISTING ROOF/GROUND WATER
DRAINAGE
EXISTING SW RISING MAIN
EXISTING FW DRAINAGE
EXISTING FW RISING MAIN
Revision
Approved
Frame Dimensions mm
(A0) 1139 x 791
Drawn Checked
Dwg Title
Scale
Dwg No.
Project
Date
Client
17/02/20
Issue Details Dwn App'dChd
FIRST ISSUE
P0
SR JR JR
Cromford Mills, Mill Lane, Matlock, Derbyshire DE4 3RQt: +44(0)1773 829 988 f: +44(0)1773 829 393 e: [email protected]
SCALE 1:250
5 4 3 2 1
5 10 15 20 25m0
(A0)
London
Kent
Derbyshire
Manchester
Stirling
N
SHEET 2 OF 4
EXISTING DRAINAGE GA
ALLINGTON EXTENSION
FCC
100509-00-DR-C-502 P3
February 2020
SR JR JR
1:250
SHEET LAYOUT, SCALE 1:12500
NOTES
1. EXISTING DRAINAGE IS BASED ON AS BUILT
INFORMATION PROVIDED BY FCC.
2. ONLY MAIN DRAINAGE IS SHOWN, INDIVIDUAL
CONNECTIONS HAVE BEEN OMITTED FOR CLARITY.
3. THIS DRAWING IS TO BE READ IN CONJUNCTION
WITH IDOM DRAWINGS:
100509-00-DR-C-0500, EXISTING GA
100509-00-DR-C-0501, EXISTING GA SHEET 1
100509-00-DR-C-0502, EXISTING GA SHEET 2
100509-00-DR-C-0503, EXISTING GA SHEET 3
100509-00-DR-C-0504, EXISTING GA SHEET 4
100509-01-DR-C-0500, PROPOSED GA
100509-01-DR-C-0501, PROPOSED GA SHEET 1
100509-01-DR-C-0502, PROPOSED GA SHEET 2
100509-01-DR-C-0503, PROPOSED GA SHEET 3
100509-01-DR-C-0504, PROPOSED GA SHEET 4
PRELIMINARY
COMMENT
TENDER
CONSTRUCTION
ISSUE PURPOSE
INFORMATION
06/03/20
AMENDMENTS FOLLOWING CLIENT COMMENTS
P1
SR JR JR
12/03/20
EXISTING RISING MAIN LINE TYPE AND COLOUR
CHANGED
P2
BMS JR JR
16/03/20
FOUL DRAINAGE ADDED (PROVIDED BY FCC)
P3
BMS JR JR
BT IC
BT IC
MH
MH
MH
MH
MH
MH
MH
BT IC
Cont'
Box
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MH
Gu
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MH
MH
MH
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Gu
Sign
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Gu
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MH
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Gu
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MH
MH
Box
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MH
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MH
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22
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IL 18.743
S19
CL 21.180
IL 19.600
S1
CL 20.990
IL 17.160
S18
CL 20.500
IL 19.040
S18.1
CL 21.964
IL 21.024
S100
CL 20.000
IL 19.200
S10
CL 20.305
IL 17.890
S6
CL 20.800
IL 19.100
S115
CL 20.305
IL 17.950
S9
CL 20.365
IL 18.530S114
CL 20.500
IL 18.450
S113
CL 20.365
IL 18.600
S9.1
CL 20.500
IL 18.790
S112
CL 20.200
IL 19.600
S111
CL 21.195
IL 19.954
S8
CL 21.195
IL 19.775
S8.1
CL 22.775
IL 21.650
S17
CL 23.800
IL 22.200
BT IC
BT IC
MH
MH
MH
MH
MH
MH
MH
BT IC
Cont'
Box
MH
MH
Gu
Gu
Gu
MH
MH
MH
MH
BT IC
Gu
Sign
MH
Gu
Gu
MH
MH
MH
Gu
Gu
Gu
MH
MH
Cont'
Box
Gu
Gu
Gu
Gu
Gu
Gu
Gu
Gu
Gu
Gu
Gu
MH
MH
BT IC
BT IC
MH
Sign
Sign
BT IC
Cont'
Box
MH
MH
MH
Cont'
Box
Cont'
Box
MH
COACH
MH
MH
MH
MH
MH
MH
MH
MH
MH
MH
MH
MH
MH
MH
MHMH
MH
MH
Container Store
MH
MH
MH
MH
Gas Store
Fuel
Oil
MH
MH
A/C Units
MH
MH
MH
MH
MH
Gu
Gu
Gu
MH
MH
MH
MHMH
MH
MH MH
Gu
MH
MH
MH
Gu
Gu
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Gu
Gu
MH
MH
MH
MH
MH
Gu Gu Gu
Gu
Gu
MH
MH
MH
MH
MH
MH
MH
MH
MH
MH
Gu
Gu
Gu
Gu
Gu
Gu
Gu
MH
MH
MH
MH
MH
MH
MH
MH
MH
Con't
Box
HV Equipment
MH MH MH
MH
Gu
Sign
O/H Sign
Sign
MH
MH /FH
MH
MH
Gu
Gu
Gu
Gu
Gu
Gu
Gu
Gu
Gu
Gu
Gu
Gu
Gu
Gu
French Drain
Gu Gu Gu Gu Gu Gu Gu
Gu
Gu
Gu
Gu
Gu
Gu
Gu
Gu
Temp'
Offices
Temp'
WC
Store
Store
Gu
32
32
32
3
2
30
30
3
0
30
30
2
8
28
2
8
2
8
26
26
2
6
26
26
24
2
4
24
24
24
22
2
2
22
22
22
20
20
20
2
0
1
8
18
18
3
4
34
34
34
30
30
30
3
0
3
0
36
36
36
3
6
38
38
38
38
3
8
38
34
34
34
34
34
32
32
32
3
2
3
2
2
8
2
8
28
2
8
2
8
26
2
6
26
26
2
6
3
6
36
3
6
36
22
22
22
24
24
24
2
4
24
16
16
1
6
1
4
14
14
12
10
2
0
20
20
1
8
18
16
16
157500N
157600N
157700N
157800N
157900N
158000N
158100N
158200N
57
33
00
E
57
34
00
E
57
35
00
E
57
36
00
E
57
37
00
E
57
38
00
E
57
39
00
E
57
40
00
E
57
41
00
E
Caravan Park
LONDON ROAD
Police
Traffic
HQ
ST LAURENCE AVENUE
Whatman House
LA
VE
RS
TO
KE
RO
AD
Centre 3000
LIP
HO
OK
WA
Y
Air C
on
de
nso
r
James Villa
Holidays
Sainsbury
Distribution
Warehouse
M20 MOTORWAY
Lagoon
Pond
Stockyard
57
42
00
E
Staff Car Park
Car Park
1 2
43
C.L 22.630
I.L 20.746
F13
KEY
EXISTING SW DRAINAGE
EXISTING ROOF/GROUND WATER
DRAINAGE
EXISTING SW RISING MAIN
EXISTING FW DRAINAGE
EXISTING FW RISING MAIN
Revision
Approved
Frame Dimensions mm
(A0) 1139 x 791
Drawn Checked
Dwg Title
Scale
Dwg No.
Project
Date
Client
17/02/20
Issue Details Dwn App'dChd
FIRST ISSUE
P0
SR JR JR
Cromford Mills, Mill Lane, Matlock, Derbyshire DE4 3RQt: +44(0)1773 829 988 f: +44(0)1773 829 393 e: [email protected]
SCALE 1:250
5 4 3 2 1
5 10 15 20 25m0
(A0)
PRELIMINARY
COMMENT
TENDER
CONSTRUCTION
ISSUE PURPOSE
INFORMATION
London
Kent
Derbyshire
Manchester
Stirling
N
SHEET 4 OF 4
EXISTING DRAINAGE
ALLINGTON EXTENSION
FCC
100509-00-DR-C-504 P2
February 2020
SR JR JR
1:250
SHEET LAYOUT, SCALE 1:12500
NOTES
1. EXISTING DRAINAGE IS BASED ON AS BUILT
INFORMATION PROVIDED BY FCC.
2. ONLY MAIN DRAINAGE IS SHOWN, INDIVIDUAL
CONNECTIONS HAVE BEEN OMITTED FOR CLARITY.
3. THIS DRAWING IS TO BE READ IN CONJUNCTION
WITH IDOM DRAWINGS:
100509-00-DR-C-0500, EXISTING GA
100509-00-DR-C-0501, EXISTING GA SHEET 1
100509-00-DR-C-0502, EXISTING GA SHEET 2
100509-00-DR-C-0503, EXISTING GA SHEET 3
100509-00-DR-C-0504, EXISTING GA SHEET 4
100509-01-DR-C-0500, PROPOSED GA
100509-01-DR-C-0501, PROPOSED GA SHEET 1
100509-01-DR-C-0502, PROPOSED GA SHEET 2
100509-01-DR-C-0503, PROPOSED GA SHEET 3
100509-01-DR-C-0504, PROPOSED GA SHEET 4
06/03/20
AMENDMENTS FOLLOWING CLIENT COMMENTS
P1
SR JR JR
16/03/20
FOUL DRAINAGE ADDED (PROVIDED BY FCC)
P2
SR JR JR
ALLINGTON EXTENSION, ALLINGTON
DRAINAGE REPORT
Produced by IDOM Reference : 100509-XX-RP-D-501, June 2020 For FCC
APPENDIX 2 ▪ Existing Drainage Network 1 - Hydraulic Calculations (Roof & Land)
▪ Existing Drainage Network 2 – Hydraulic Calculations (Surface)
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven14/02/2020
Page 1
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Design Se ngs
Rainfall MethodologyReturn Period (years)
Addi onal Flow (%)FSR Region
M5-60 (mm)Ra o-R
CVTime of Entry (mins)
FSR10England and Wales20.0000.4000.7505.00
Maximum Time of Concentra on (mins)Maximum Rainfall (mm/hr)
Minimum Velocity (m/s)Connec on Type
Minimum Backdrop Height (m)Preferred Cover Depth (m)
Include Intermediate GroundEnforce best prac ce design rules
30.000.01.00Level So ts6.0001.200✓✓
Nodes
Name Area(ha)
T of E(mins)
CoverLevel(m)
Diameter(mm)
Eas ng(m)
Northing(m)
Depth(m)
66.17511.122.134In25.425.125.225.3110111112113114115116117118119120121122123124125126
0.2680.0320.1530.3070.2580.0190.1690.0200.5090.0200.0170.107
0.1500.0670.1000.0450.1500.0250.1000.0130.1290.1200.0700.0800.1540.0950.0750.011
5.005.005.005.005.005.005.005.005.005.005.005.00
30.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.00
20.80017.97018.12515.95020.99016.70016.70015.95015.73516.00016.00015.60015.65515.77515.67022.77521.19520.20020.36520.50020.30517.75017.20016.98516.50015.60016.90017.00016.50016.35015.80015.000
12001350135013501350135013501350135012001200135013501350120012001200120012001200120012001200120012001200150015001500150021002100
573814.692573814.094573814.029573809.820573906.260573905.771573901.622573901.225573900.598573809.815573809.607573909.011573908.445573860.312573810.729573975.970573900.355573878.394573814.877573791.732573780.291573780.291573777.661573777.003573782.263573781.606573957.338573943.346573857.000573797.717573794.632573607.595
157755.780157813.643157820.773157858.434157758.616157815.885157820.070157858.643157909.435157911.524157939.224157909.938157965.810157965.452157954.180157747.549157715.950157710.690157709.638157721.342157748.695157816.025157824.573157867.312157873.098157922.018157925.666157973.902157973.533157953.650157939.290157976.013
1.7001.7202.1501.4003.8302.0002.0801.7001.7852.4502.5501.4001.7001.9401.9802.2751.2410.6001.7652.0502.3551.5501.0500.9770.6251.1000.9003.0002.6502.7203.0003.000
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven14/02/2020
Page 2
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Links
Name USNode
DSNode
Length(m)
ks (mm) /n
US IL(m)
DS IL(m)
Fall(m)
Slope(1:X)
Dia(mm)
T of C(mins)
Rain(mm/hr)
Name Vel(m/s)
Cap(l/s)
Flow(l/s)
USDepth
(m)
DSDepth
(m)
Σ Area(ha)
Σ AddIn ow
(l/s)
ProDepth(mm)
ProVelocity
(m/s)
1.000 6 6.1 57.862 0.600 19.100 16.475 2.625 22.0 225 5.34 50.0
1.000 2.799 111.3 36.3 1.475 1.270 0.268 0.0 88 2.512
1.001 6.1 7 7.280 0.600 16.250 15.975 0.275 26.5 450 5.38 50.0
1.001 3.963 630.3 40.7 1.270 1.700 0.300 0.0 76 2.262
1.002 7 5 37.630 0.600 15.975 14.550 1.425 26.4 450 5.53 50.0
1.002 3.968 631.1 61.4 1.700 0.950 0.453 0.0 94 2.554
1.003 5 4 52.140 0.600 14.550 13.700 0.850 61.3 450 5.87 50.0
1.003 2.599 413.3 103.0 0.950 1.850 0.760 0.0 152 2.175
1.004 4 In 29.597 0.600 13.550 13.450 0.100 296.0 600 8.26 42.9
1.004 1.410 398.7 204.1 1.850 1.950 1.755 0.0 304 1.418
1.005 In 125 22.487 0.600 13.450 13.350 0.100 224.9 600 8.64 41.9
1.005 1.619 457.9 201.2 1.950 1.850 1.772 0.0 278 1.569
1.006 125 126 190.608 0.600 12.800 12.000 0.800 238.3 1200 30.00 0.0
1.006 2.419 2735.8 0.0 1.800 1.800 3.263 0.0 0 0.000
2.000 1 1.1 58.229 0.600 17.160 14.700 2.460 23.7 375 5.26 50.0
2.000 3.737 412.8 35.0 3.455 1.625 0.258 0.0 73 2.308
2.001 1.1 2 5.800 0.600 14.700 14.650 0.050 116.0 375 5.26 50.0
2.001 1.681 185.7 37.5 1.625 1.675 0.277 0.0 114 1.328
2.002 2 2.1 38.749 0.600 14.620 14.250 0.370 104.7 375 5.63 50.0
2.002 1.770 195.5 60.4 1.705 1.325 0.446 0.0 142 1.566
2.003 2.1 3 50.683 0.600 14.250 13.950 0.300 168.9 375 6.33 49.1
2.003 1.391 153.6 62.0 1.325 1.410 0.466 0.0 166 1.320
2.004 3 4 91.284 0.600 13.950 13.550 0.400 228.2 450 7.77 44.3
2.004 1.341 213.3 117.1 1.335 2.000 0.975 0.0 238 1.371
3.000 25.4 25.1 56.030 0.600 14.200 13.955 0.245 228.7 450 5.70 50.0
3.000 1.340 213.1 14.5 0.950 1.250 0.107 0.0 79 0.777
3.001 25.1 25.2 47.708 0.600 13.955 13.835 0.120 397.6 450 6.48 48.5
3.001 1.013 161.1 14.1 1.250 1.490 0.107 0.0 89 0.631
3.002 25.2 25.3 50.949 0.600 13.835 13.690 0.145 351.4 450 7.27 45.9
3.002 1.079 171.5 13.3 1.490 1.530 0.107 0.0 84 0.649
3.003 25.3 125 27.501 0.600 13.690 13.550 0.140 196.4 450 7.73 44.4
3.003 1.447 230.1 12.9 1.530 1.800 0.107 0.0 72 0.794
4.000 110 111 81.952 0.600 20.500 19.954 0.546 150.1 225 5.98 50.0
4.000 1.065 42.3 20.3 2.050 1.016 0.150 0.0 109 1.052
4.001 111 112 22.582 0.600 19.954 19.600 0.354 63.8 225 6.15 49.8
4.001 1.640 65.2 29.3 1.016 0.375 0.217 0.0 106 1.599
4.002 112 113 63.526 0.600 19.600 18.600 1.000 63.5 225 15.16 30.8
4.002 1.643 65.3 26.5 0.375 1.540 0.317 0.0 100 1.560
4.003 113 114 25.936 0.600 18.600 18.450 0.150 172.9 225 15.40 30.5
4.003 0.991 39.4 29.9 1.540 1.825 0.362 0.0 147 1.088
4.004 114 115 29.649 0.600 18.450 18.015 0.435 68.2 300 15.60 30.3
4.004 1.907 134.8 42.0 1.750 1.990 0.512 0.0 115 1.690
4.005 115 116 67.330 0.600 17.950 16.200 1.750 38.5 300 16.28 29.5
4.005 2.542 179.7 42.9 2.055 1.250 0.537 0.0 99 2.098
4.006 116 117 8.943 0.600 16.200 16.150 0.050 178.9 300 16.31 29.5
4.006 1.172 82.9 50.9 1.250 0.750 0.637 0.0 170 1.230
4.007 117 118 42.744 0.600 16.150 16.008 0.142 301.0 300 16.88 28.9
4.007 0.901 63.7 50.9 0.750 0.677 0.650 0.0 204 0.997
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven14/02/2020
Page 3
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Links
Name USNode
DSNode
Length(m)
ks (mm) /n
US IL(m)
DS IL(m)
Fall(m)
Slope(1:X)
Dia(mm)
T of C(mins)
Rain(mm/hr)
Name Vel(m/s)
Cap(l/s)
Flow(l/s)
USDepth
(m)
DSDepth
(m)
Σ Area(ha)
Σ AddIn ow
(l/s)
ProDepth(mm)
ProVelocity
(m/s)
4.008 118 119 7.820 0.600 16.008 15.875 0.133 58.8 300 16.93 28.8
4.008 2.054 145.2 60.8 0.677 0.325 0.779 0.0 135 1.965
4.009 119 120 48.924 0.600 15.875 14.975 0.900 54.4 300 17.31 28.5
4.009 2.137 151.0 69.4 0.325 0.325 0.899 0.0 143 2.093
4.010 120 125 18.802 0.600 14.500 13.700 0.800 23.5 300 17.63 28.2
4.010 3.256 230.2 74.1 0.800 1.800 0.969 0.0 117 2.915
5.000 121 122 50.224 0.600 16.000 14.000 2.000 25.1 500 5.87 50.0
5.000 4.347 853.6 10.8 0.400 2.500 0.080 0.0 39 1.537
5.001 122 123 86.347 0.600 14.000 13.850 0.150 575.6 500 8.67 41.8
5.001 0.898 176.3 26.5 2.500 2.150 0.234 0.0 130 0.654
5.002 123 124 62.528 0.600 13.850 13.630 0.220 284.2 500 9.66 39.6
5.002 1.283 252.0 35.3 2.150 2.220 0.329 0.0 125 0.916
5.003 124 125 17.202 0.600 13.630 12.800 0.830 20.7 500 9.71 39.5
5.003 4.787 939.9 43.3 2.220 2.500 0.404 0.0 72 2.486
Pipeline Schedule
Link Length(m)
Slope(1:X)
Dia(mm)
LinkType
US CL(m)
US IL(m)
US Depth(m)
DS CL(m)
DS IL(m)
DS Depth(m)
Link USNode
Dia(mm)
NodeType
MHType
DSNode
Dia(mm)
NodeType
MHType
1.000 57.862 22.0 225 Circular_Default Sewer Type 20.800 19.100 1.475 17.970 16.475 1.270
1.000 6 1200 Manhole Adoptable 6.1 1350 Manhole Adoptable
1.001 7.280 26.5 450 Circular_Default Sewer Type 17.970 16.250 1.270 18.125 15.975 1.700
1.001 6.1 1350 Manhole Adoptable 7 1350 Manhole Adoptable
1.002 37.630 26.4 450 Circular_Default Sewer Type 18.125 15.975 1.700 15.950 14.550 0.950
1.002 7 1350 Manhole Adoptable 5 1350 Manhole Adoptable
1.003 52.140 61.3 450 Circular_Default Sewer Type 15.950 14.550 0.950 16.000 13.700 1.850
1.003 5 1350 Manhole Adoptable 4 1200 Manhole Adoptable
1.004 29.597 296.0 600 Circular_Default Sewer Type 16.000 13.550 1.850 16.000 13.450 1.950
1.004 4 1200 Manhole Adoptable In 1200 Manhole Adoptable
1.005 22.487 224.9 600 Circular_Default Sewer Type 16.000 13.450 1.950 15.800 13.350 1.850
1.005 In 1200 Manhole Adoptable 125 2100 Manhole Adoptable
1.006 190.608 238.3 1200 Circular_Default Sewer Type 15.800 12.800 1.800 15.000 12.000 1.800
1.006 125 2100 Manhole Adoptable 126 2100 Manhole Adoptable
2.000 58.229 23.7 375 Circular_Default Sewer Type 20.990 17.160 3.455 16.700 14.700 1.625
2.000 1 1350 Manhole Adoptable 1.1 1350 Manhole Adoptable
2.001 5.800 116.0 375 Circular_Default Sewer Type 16.700 14.700 1.625 16.700 14.650 1.675
2.001 1.1 1350 Manhole Adoptable 2 1350 Manhole Adoptable
2.002 38.749 104.7 375 Circular_Default Sewer Type 16.700 14.620 1.705 15.950 14.250 1.325
2.002 2 1350 Manhole Adoptable 2.1 1350 Manhole Adoptable
2.003 50.683 168.9 375 Circular_Default Sewer Type 15.950 14.250 1.325 15.735 13.950 1.410
2.003 2.1 1350 Manhole Adoptable 3 1350 Manhole Adoptable
2.004 91.284 228.2 450 Circular_Default Sewer Type 15.735 13.950 1.335 16.000 13.550 2.000
2.004 3 1350 Manhole Adoptable 4 1200 Manhole Adoptable
3.000 56.030 228.7 450 Circular_Default Sewer Type 15.600 14.200 0.950 15.655 13.955 1.250
3.000 25.4 1350 Manhole Adoptable 25.1 1350 Manhole Adoptable
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven14/02/2020
Page 4
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Pipeline Schedule
Link Length(m)
Slope(1:X)
Dia(mm)
LinkType
US CL(m)
US IL(m)
US Depth(m)
DS CL(m)
DS IL(m)
DS Depth(m)
Link USNode
Dia(mm)
NodeType
MHType
DSNode
Dia(mm)
NodeType
MHType
3.001 47.708 397.6 450 Circular_Default Sewer Type 15.655 13.955 1.250 15.775 13.835 1.490
3.001 25.1 1350 Manhole Adoptable 25.2 1350 Manhole Adoptable
3.002 50.949 351.4 450 Circular_Default Sewer Type 15.775 13.835 1.490 15.670 13.690 1.530
3.002 25.2 1350 Manhole Adoptable 25.3 1200 Manhole Adoptable
3.003 27.501 196.4 450 Circular_Default Sewer Type 15.670 13.690 1.530 15.800 13.550 1.800
3.003 25.3 1200 Manhole Adoptable 125 2100 Manhole Adoptable
4.000 81.952 150.1 225 Circular_Default Sewer Type 22.775 20.500 2.050 21.195 19.954 1.016
4.000 110 1200 Manhole Adoptable 111 1200 Manhole Adoptable
4.001 22.582 63.8 225 Circular_Default Sewer Type 21.195 19.954 1.016 20.200 19.600 0.375
4.001 111 1200 Manhole Adoptable 112 1200 Manhole Adoptable
4.002 63.526 63.5 225 Circular_Default Sewer Type 20.200 19.600 0.375 20.365 18.600 1.540
4.002 112 1200 Manhole Adoptable 113 1200 Manhole Adoptable
4.003 25.936 172.9 225 Circular_Default Sewer Type 20.365 18.600 1.540 20.500 18.450 1.825
4.003 113 1200 Manhole Adoptable 114 1200 Manhole Adoptable
4.004 29.649 68.2 300 Circular_Default Sewer Type 20.500 18.450 1.750 20.305 18.015 1.990
4.004 114 1200 Manhole Adoptable 115 1200 Manhole Adoptable
4.005 67.330 38.5 300 Circular_Default Sewer Type 20.305 17.950 2.055 17.750 16.200 1.250
4.005 115 1200 Manhole Adoptable 116 1200 Manhole Adoptable
4.006 8.943 178.9 300 Circular_Default Sewer Type 17.750 16.200 1.250 17.200 16.150 0.750
4.006 116 1200 Manhole Adoptable 117 1200 Manhole Adoptable
4.007 42.744 301.0 300 Circular_Default Sewer Type 17.200 16.150 0.750 16.985 16.008 0.677
4.007 117 1200 Manhole Adoptable 118 1200 Manhole Adoptable
4.008 7.820 58.8 300 Circular_Default Sewer Type 16.985 16.008 0.677 16.500 15.875 0.325
4.008 118 1200 Manhole Adoptable 119 1200 Manhole Adoptable
4.009 48.924 54.4 300 Circular_Default Sewer Type 16.500 15.875 0.325 15.600 14.975 0.325
4.009 119 1200 Manhole Adoptable 120 1200 Manhole Adoptable
4.010 18.802 23.5 300 Circular_Default Sewer Type 15.600 14.500 0.800 15.800 13.700 1.800
4.010 120 1200 Manhole Adoptable 125 2100 Manhole Adoptable
5.000 50.224 25.1 500 Circular_Default Sewer Type 16.900 16.000 0.400 17.000 14.000 2.500
5.000 121 1500 Manhole Adoptable 122 1500 Manhole Adoptable
5.001 86.347 575.6 500 Circular_Default Sewer Type 17.000 14.000 2.500 16.500 13.850 2.150
5.001 122 1500 Manhole Adoptable 123 1500 Manhole Adoptable
5.002 62.528 284.2 500 Circular_Default Sewer Type 16.500 13.850 2.150 16.350 13.630 2.220
5.002 123 1500 Manhole Adoptable 124 1500 Manhole Adoptable
5.003 17.202 20.7 500 Circular_Default Sewer Type 16.350 13.630 2.220 15.800 12.800 2.500
5.003 124 1500 Manhole Adoptable 125 2100 Manhole Adoptable
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
6
6.1
573814.692
573814.094
157755.780
157813.643
20.800
17.970
1.700
1.720
1200
1350
0
1
0
01
0
1.0001.000
1.001
19.10016.475
16.250
225225
450
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven14/02/2020
Page 5
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
7
5
1
1.1
2
2.1
3
4
In
25.4
25.1
25.2
25.3
573814.029
573809.820
573906.260
573905.771
573901.622
573901.225
573900.598
573809.815
573809.607
573909.011
573908.445
573860.312
573810.729
157820.773
157858.434
157758.616
157815.885
157820.070
157858.643
157909.435
157911.524
157939.224
157909.938
157965.810
157965.452
157954.180
18.125
15.950
20.990
16.700
16.700
15.950
15.735
16.000
16.000
15.600
15.655
15.775
15.670
2.150
1.400
3.830
2.000
2.080
1.700
1.785
2.450
2.550
1.400
1.700
1.940
1.980
1350
1350
1350
1350
1350
1350
1350
1200
1200
1350
1350
1350
1200
1
0
1
0
0
1
0
1
0
1
0
1
0
1
2
0
1
0
0
1
0
10
1
0
1
01
0
01
01
01
01
012
01
0
01
01
01
0
1.001
1.0021.002
1.003
2.0002.000
2.0012.001
2.0022.002
2.0032.003
2.0042.0041.003
1.0041.004
1.005
3.0003.000
3.0013.001
3.0023.002
3.003
15.975
15.97514.550
14.550
17.16014.700
14.70014.650
14.62014.250
14.25013.950
13.95013.55013.700
13.55013.450
13.450
14.20013.955
13.95513.835
13.83513.690
13.690
450
450450
450
375375
375375
375375
375375
450450450
600600
600
450450
450450
450450
450
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven14/02/2020
Page 6
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
110
111
112
113
114
115
116
117
118
119
120
121
122
573975.970
573900.355
573878.394
573814.877
573791.732
573780.291
573780.291
573777.661
573777.003
573782.263
573781.606
573957.338
573943.346
157747.549
157715.950
157710.690
157709.638
157721.342
157748.695
157816.025
157824.573
157867.312
157873.098
157922.018
157925.666
157973.902
22.775
21.195
20.200
20.365
20.500
20.305
17.750
17.200
16.985
16.500
15.600
16.900
17.000
2.275
1.241
0.600
1.765
2.050
2.355
1.550
1.050
0.977
0.625
1.100
0.900
3.000
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1500
1500
0
1
0
10
10
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
1
0
01
01
01
01
01
01
01
01
01
01
0
01
0
4.0004.000
4.0014.001
4.0024.002
4.0034.003
4.0044.004
4.0054.005
4.0064.006
4.0074.007
4.0084.008
4.0094.009
4.010
5.0005.000
5.001
20.50019.954
19.95419.600
19.60018.600
18.60018.450
18.45018.015
17.95016.200
16.20016.150
16.15016.008
16.00815.875
15.87514.975
14.500
16.00014.000
14.000
225225
225225
225225
225225
300300
300300
300300
300300
300300
300300
300
500500
500
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven14/02/2020
Page 7
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
123
124
125
126
573857.000
573797.717
573794.632
573607.595
157973.533
157953.650
157939.290
157976.013
16.500
16.350
15.800
15.000
2.650
2.720
3.000
3.000
1500
1500
2100
2100
10
1
0
1
2
3
40
1
1
01
0123401
5.001
5.0025.002
5.0035.0034.0103.0031.0051.0061.006
13.850
13.85013.630
13.63012.80013.70013.55013.35012.80012.000
500
500500
500500300450600
12001200
Simula on Se ngs
Rainfall MethodologyFSR Region
M5-60 (mm)Ra o-R
Summer CVWinter CV
Analysis Speed
FSREngland and Wales20.0000.4000.7500.840Detailed
Skip Steady StateDrain Down Time (mins)
Addi onal Storage (m³/ha)Check Discharge Rate(s)
Check Discharge Volume100 year 360 minute (m³)
x150020.0✓✓
Storm Dura ons15 30 60 120 180 240 360 480 600 720 960 1440
Return Period(years)
Climate Change(CC %)
Addi onal Area(A %)
Addi onal Flow(Q %)
130
100100
000
40
0000
0000
Pre-development Discharge Rate
Site MakeupGreen eld Method
Posi vely Drained Area (ha)SAAR (mm)
Soil IndexSPR
RegionGrowth Factor 1 year
Green eldIH124
10.1010.85
Growth Factor 30 yearGrowth Factor 100 year
Be erment (%)QBar
Q 1 year (l/s)Q 30 year (l/s)
Q 100 year (l/s)
1.952.480
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven14/02/2020
Page 8
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Pre-development Discharge Volume
Site MakeupGreen eld Method
Posi vely Drained Area (ha)Soil Index
SPRCWI
Green eldFSR/FEH
10.10
Return Period (years)Climate Change (%)
Storm Dura on (mins)Be erment (%)
PRRuno Volume (m³)
10003600
Other (defaults)
Entry Loss (manhole)Exit Loss (manhole)
0.2500.250
Entry Loss (junc on)Exit Loss (junc on)
0.0000.000
Apply Recommended LossesFlood Risk (m)
x0.300
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven14/02/2020
Page 9
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 1 year Cri cal Storm Dura on. Lowest mass balance: 99.81%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 6 10 19.191 0.091 37.8 0.3889 0.0000 OK
15 minute winter 6 1.000 6.1 36.9 2.498 0.331 0.8538
15 minute winter 6.1 10 16.335 0.085 41.4 0.1532 0.0000 OK
15 minute winter 6.1 1.001 7 41.2 1.844 0.065 0.1629
15 minute winter 7 10 16.069 0.094 62.8 0.2688 0.0000 OK
15 minute winter 7 1.002 5 62.2 1.762 0.099 1.3657
15 minute winter 5 10 14.706 0.156 105.5 0.9049 0.0000 OK
15 minute winter 5 1.003 4 104.8 2.025 0.254 3.0843
15 minute winter 1 10 17.234 0.074 36.4 0.2058 0.0000 OK
15 minute winter 1 2.000 1.1 36.0 1.482 0.087 1.4441
15 minute winter 1.1 11 14.831 0.131 38.7 0.2128 0.0000 OK
15 minute winter 1.1 2.001 2 38.0 1.197 0.205 0.1846
15 minute winter 2 10 14.767 0.147 61.1 0.4500 0.0000 OK
15 minute winter 2 2.002 2.1 61.2 1.419 0.313 1.6828
15 minute winter 2.1 11 14.415 0.165 63.9 0.2758 0.0000 OK
15 minute winter 2.1 2.003 3 63.7 1.028 0.414 3.1311
15 minute winter 3 11 14.196 0.246 131.2 1.7570 0.0000 OK
15 minute winter 3 2.004 4 128.5 1.137 0.602 10.2183
15 minute winter 4 11 13.908 0.358 235.4 0.4628 0.0000 OK
15 minute winter 4 1.004 In 230.6 1.391 0.579 4.9067
15 minute winter In 12 13.779 0.329 232.9 0.4153 0.0000 OK
15 minute winter In 1.005 125 234.0 1.580 0.511 3.3299
15 minute winter 25.4 10 14.280 0.080 15.1 0.2360 0.0000 OK
15 minute winter 25.4 3.000 25.1 14.7 0.732 0.069 1.1676
15 minute winter 25.1 11 14.047 0.092 14.7 0.1313 0.0000 OK
15 minute winter 25.1 3.001 25.2 14.2 0.654 0.088 1.0568
15 minute winter 25.2 12 13.922 0.087 14.2 0.1248 0.0000 OK
15 minute winter 25.2 3.002 25.3 13.7 0.738 0.080 0.9783
15 minute winter 25.3 13 13.764 0.074 13.7 0.0839 0.0000 OK
15 minute winter 25.3 3.003 125 13.2 0.793 0.057 0.4582
60 minute winter 110 46 20.563 0.063 7.1 0.1537 0.0000 OK
60 minute winter 110 4.000 111 7.1 0.810 0.168 0.7186
60 minute winter 111 47 20.014 0.060 10.3 0.1330 0.0000 OK
60 minute winter 111 4.001 112 10.3 1.051 0.158 0.2218
60 minute winter 112 46 19.673 0.073 15.1 0.3258 0.0000 OK
60 minute winter 112 4.002 113 15.0 1.013 0.230 0.9477
60 minute winter 113 46 18.707 0.107 17.1 0.1763 0.0000 OK
60 minute winter 113 4.003 114 17.1 1.033 0.434 0.4302
60 minute winter 114 47 18.539 0.089 24.2 0.2296 0.0000 OK
60 minute winter 114 4.004 115 24.2 1.432 0.180 0.5015
60 minute winter 115 47 18.026 0.076 25.4 0.1016 0.0000 OK
60 minute winter 115 4.005 116 25.4 1.082 0.141 1.6045
60 minute winter 116 48 16.345 0.145 30.1 0.3514 0.0000 OK
60 minute winter 116 4.006 117 30.1 0.879 0.363 0.3064
60 minute winter 117 48 16.299 0.149 30.7 0.2048 0.0000 OK
60 minute winter 117 4.007 118 30.7 1.023 0.482 1.2837
60 minute winter 118 47 16.125 0.117 36.7 0.4398 0.0000 OK
60 minute winter 118 4.008 119 36.7 1.500 0.253 0.1915
60 minute winter 119 47 15.986 0.111 42.4 0.5518 0.0000 OK
60 minute winter 119 4.009 120 42.4 1.826 0.281 1.1353
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven14/02/2020
Page 10
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 1 year Cri cal Storm Dura on. Lowest mass balance: 99.81%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
60 minute winter 120 48 14.596 0.096 45.7 0.2302 0.0000 OK
60 minute winter 120 4.010 125 45.7 2.466 0.198 0.3485
60 minute winter 121 47 16.024 0.024 3.8 0.0856 0.0000 OK
60 minute winter 121 5.000 122 3.8 0.342 0.004 0.6218
60 minute winter 122 47 14.083 0.083 11.1 0.2327 0.0000 OK
60 minute winter 122 5.001 123 11.1 0.496 0.063 1.9289
60 minute winter 123 48 13.939 0.089 15.6 0.2201 0.0000 OK
60 minute winter 123 5.002 124 15.5 0.963 0.062 1.0346
60 minute winter 124 48 13.679 0.049 19.1 0.1131 0.0000 OK
60 minute winter 124 5.003 125 19.0 0.665 0.020 0.7298
15 minute winter 125 13 13.051 0.251 272.2 0.8886 0.0000 OK
15 minute winter 125 1.006 126 271.6 1.613 0.099 32.0862 211.6
15 minute winter 126 13 12.246 0.246 271.6 0.0000 0.0000 OK
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven14/02/2020
Page 11
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 30 year Cri cal Storm Dura on. Lowest mass balance: 99.81%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 6 10 19.260 0.160 92.7 0.6870 0.0000 OK
15 minute winter 6 1.000 6.1 90.6 3.074 0.814 1.7068
15 minute winter 6.1 10 16.394 0.144 101.7 0.2595 0.0000 OK
15 minute winter 6.1 1.001 7 101.4 2.272 0.161 0.3251
15 minute winter 7 10 16.124 0.149 154.2 0.4248 0.0000 OK
15 minute winter 7 1.002 5 153.2 2.236 0.243 2.6199
15 minute winter 5 11 14.808 0.258 259.4 1.5031 0.0000 OK
15 minute winter 5 1.003 4 255.5 2.101 0.618 6.5854
15 minute winter 1 10 17.277 0.117 89.3 0.3239 0.0000 OK
15 minute winter 1 2.000 1.1 88.5 1.715 0.214 4.0334
15 minute winter 1.1 12 15.465 0.765 95.1 1.2404 0.0000 SURCHARGED
15 minute winter 1.1 2.001 2 82.1 1.269 0.442 0.6397
15 minute winter 2 12 15.445 0.825 135.5 2.5212 0.0000 SURCHARGED
15 minute winter 2 2.002 2.1 128.8 1.615 0.659 4.2739
15 minute winter 2.1 12 15.267 1.017 135.3 1.6954 0.0000 SURCHARGED
15 minute winter 2.1 2.003 3 138.9 1.259 0.904 5.5902
15 minute winter 3 12 15.020 1.070 273.5 7.6318 0.0000 SURCHARGED
15 minute winter 3 2.004 4 269.1 1.699 1.262 14.4634
15 minute winter 4 11 14.308 0.758 514.3 0.9806 0.0000 SURCHARGED
15 minute winter 4 1.004 In 511.6 1.817 1.283 8.3368
15 minute winter In 11 14.064 0.614 517.1 0.7756 0.0000 SURCHARGED
15 minute winter In 1.005 125 518.0 1.934 1.131 5.8367
15 minute winter 25.4 10 14.326 0.126 37.0 0.3742 0.0000 OK
15 minute winter 25.4 3.000 25.1 36.3 0.918 0.171 2.2549
15 minute winter 25.1 11 14.103 0.148 36.3 0.2117 0.0000 OK
15 minute winter 25.1 3.001 25.2 35.8 0.834 0.222 2.0515
15 minute winter 25.2 12 13.975 0.140 35.8 0.2007 0.0000 OK
15 minute winter 25.2 3.002 25.3 35.3 0.930 0.206 1.9410
15 minute winter 25.3 13 13.811 0.121 35.3 0.1373 0.0000 OK
15 minute winter 25.3 3.003 125 34.6 1.037 0.150 0.9168
30 minute winter 110 30 20.601 0.101 17.3 0.2469 0.0000 OK
30 minute winter 110 4.000 111 17.3 1.018 0.408 1.3887
30 minute winter 111 31 20.052 0.098 25.0 0.2177 0.0000 OK
30 minute winter 111 4.001 112 24.9 1.313 0.383 0.4292
30 minute winter 112 31 19.719 0.119 36.4 0.5316 0.0000 OK
30 minute winter 112 4.002 113 36.4 1.223 0.557 1.8548
30 minute winter 113 32 18.799 0.199 41.6 0.3258 0.0000 OK
30 minute winter 113 4.003 114 41.5 1.277 1.054 0.8335
30 minute winter 114 32 18.596 0.146 58.6 0.3777 0.0000 OK
30 minute winter 114 4.004 115 58.6 1.797 0.435 0.9662
30 minute winter 115 32 18.070 0.120 61.4 0.1609 0.0000 OK
30 minute winter 115 4.005 116 61.4 1.224 0.342 3.2542
30 minute winter 116 33 16.520 0.320 72.9 0.7739 0.0000 SURCHARGED
30 minute winter 116 4.006 117 72.4 1.029 0.874 0.6298
30 minute winter 117 33 16.455 0.305 73.9 0.4205 0.0000 SURCHARGED
30 minute winter 117 4.007 118 73.9 1.173 1.161 2.6159
30 minute winter 118 33 16.215 0.207 88.4 0.7825 0.0000 OK
30 minute winter 118 4.008 119 88.4 1.792 0.609 0.3857
60 minute winter 119 48 16.064 0.189 101.9 0.9382 0.0000 OK
60 minute winter 119 4.009 120 101.9 2.256 0.675 2.2092
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven14/02/2020
Page 12
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 30 year Cri cal Storm Dura on. Lowest mass balance: 99.81%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
60 minute winter 120 48 14.661 0.161 109.8 0.3871 0.0000 OK
60 minute winter 120 4.010 125 109.8 3.045 0.477 0.6778
30 minute winter 121 31 16.036 0.036 9.2 0.1289 0.0000 OK
30 minute winter 121 5.000 122 9.2 0.433 0.011 1.1747
30 minute winter 122 31 14.130 0.130 27.0 0.3640 0.0000 OK
30 minute winter 122 5.001 123 26.9 0.644 0.152 3.6061
30 minute winter 123 32 13.986 0.136 37.8 0.3384 0.0000 OK
30 minute winter 123 5.002 124 37.7 1.260 0.150 1.9136
30 minute winter 124 32 13.704 0.074 46.2 0.1724 0.0000 OK
30 minute winter 124 5.003 125 46.2 1.020 0.049 1.4593
15 minute winter 125 12 13.195 0.395 636.1 1.3964 0.0000 OK
15 minute winter 125 1.006 126 634.3 2.048 0.232 59.5708 520.5
15 minute winter 126 13 12.377 0.377 634.3 0.0000 0.0000 OK
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven14/02/2020
Page 13
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year Cri cal Storm Dura on. Lowest mass balance: 99.81%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 6 11 19.306 0.206 120.3 0.8838 0.0000 OK
15 minute winter 6 1.000 6.1 116.4 3.134 1.046 2.2532
15 minute winter 6.1 10 16.418 0.168 130.4 0.3029 0.0000 OK
15 minute winter 6.1 1.001 7 130.3 2.406 0.207 0.3965
15 minute winter 7 10 16.145 0.170 199.0 0.4867 0.0000 OK
15 minute winter 7 1.002 5 198.2 2.217 0.314 4.0041
15 minute winter 5 12 15.146 0.596 336.0 3.4654 0.0000 SURCHARGED
15 minute winter 5 1.003 4 302.8 2.103 0.732 8.2612
15 minute winter 1 10 17.294 0.134 115.8 0.3713 0.0000 OK
15 minute winter 1 2.000 1.1 114.9 1.766 0.278 4.2356
15 minute winter 1.1 12 16.319 1.619 123.4 2.6243 0.0000 SURCHARGED
15 minute winter 1.1 2.001 2 104.5 1.195 0.563 0.6397
15 minute winter 2 12 16.280 1.660 163.8 5.0719 0.0000 SURCHARGED
15 minute winter 2 2.002 2.1 165.9 1.646 0.848 4.2739
15 minute winter 2.1 12 15.950 1.700 172.9 2.8339 2.2083 FLOOD
15 minute winter 2.1 2.003 3 163.1 1.479 1.062 5.5902
15 minute winter 3 12 15.655 1.705 349.0 12.1640 0.0000 FLOOD RISK
15 minute winter 3 2.004 4 328.4 2.073 1.539 14.4634
15 minute winter 4 12 14.596 1.046 638.1 1.3539 0.0000 SURCHARGED
15 minute winter 4 1.004 In 639.5 2.271 1.604 8.3368
15 minute winter In 12 14.215 0.765 645.5 0.9668 0.0000 SURCHARGED
15 minute winter In 1.005 125 647.0 2.307 1.413 6.0791
15 minute winter 25.4 10 14.345 0.145 48.0 0.4305 0.0000 OK
15 minute winter 25.4 3.000 25.1 47.3 0.977 0.222 2.7379
15 minute winter 25.1 11 14.126 0.171 47.3 0.2442 0.0000 OK
15 minute winter 25.1 3.001 25.2 46.8 0.892 0.290 2.5031
15 minute winter 25.2 12 13.997 0.162 46.8 0.2311 0.0000 OK
15 minute winter 25.2 3.002 25.3 46.1 0.992 0.269 2.3742
15 minute winter 25.3 12 13.830 0.140 46.1 0.1585 0.0000 OK
15 minute winter 25.3 3.003 125 45.0 1.115 0.196 1.1111
30 minute winter 110 30 20.618 0.118 22.7 0.2894 0.0000 OK
30 minute winter 110 4.000 111 22.7 1.083 0.535 1.7146
30 minute winter 111 31 20.071 0.117 32.8 0.2578 0.0000 OK
30 minute winter 111 4.001 112 32.7 1.391 0.502 0.5311
30 minute winter 112 31 19.742 0.142 47.7 0.6317 0.0000 OK
30 minute winter 112 4.002 113 47.7 1.307 0.731 2.0982
30 minute winter 113 32 18.963 0.363 54.5 0.5949 0.0000 SURCHARGED
30 minute winter 113 4.003 114 54.4 1.408 1.380 0.9400
30 minute winter 114 31 18.623 0.173 76.8 0.4481 0.0000 OK
30 minute winter 114 4.004 115 76.8 1.912 0.570 1.1902
30 minute winter 115 32 18.089 0.139 80.5 0.1872 0.0000 OK
30 minute winter 115 4.005 116 80.5 1.362 0.448 3.4491
60 minute winter 116 48 16.739 0.539 95.5 1.3047 0.0000 SURCHARGED
60 minute winter 116 4.006 117 95.2 1.351 1.148 0.6298
60 minute winter 117 48 16.624 0.474 97.1 0.6536 0.0000 SURCHARGED
60 minute winter 117 4.007 118 97.1 1.381 1.524 2.9058
60 minute winter 118 48 16.271 0.263 116.2 0.9934 0.0000 OK
60 minute winter 118 4.008 119 116.2 1.860 0.800 0.4871
60 minute winter 119 48 16.109 0.234 134.0 1.1647 0.0000 OK
60 minute winter 119 4.009 120 134.0 2.359 0.887 2.7768
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven14/02/2020
Page 14
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year Cri cal Storm Dura on. Lowest mass balance: 99.81%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
60 minute winter 120 48 14.695 0.195 144.4 0.4679 0.0000 OK
60 minute winter 120 4.010 125 144.4 3.218 0.627 0.8431
30 minute winter 121 30 16.041 0.041 12.1 0.1461 0.0000 OK
30 minute winter 121 5.000 122 12.1 0.463 0.014 1.4343
30 minute winter 122 31 14.151 0.151 35.4 0.4206 0.0000 OK
30 minute winter 122 5.001 123 35.2 0.694 0.200 4.3830
30 minute winter 123 32 14.006 0.156 49.5 0.3872 0.0000 OK
30 minute winter 123 5.002 124 49.4 1.366 0.196 2.3114
30 minute winter 124 32 13.715 0.085 60.6 0.1967 0.0000 OK
30 minute winter 124 5.003 125 60.6 1.116 0.064 1.6742
15 minute winter 125 12 13.248 0.448 805.7 1.5854 0.0000 OK
15 minute winter 125 1.006 126 806.5 2.179 0.295 70.5478 673.4
15 minute winter 126 13 12.428 0.428 806.5 0.0000 0.0000 OK
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven14/02/2020
Page 15
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year +40% CC Cri cal Storm Dura on. Lowest mass balance: 99.81%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 6 12 20.798 1.698 168.4 7.2753 0.0000 FLOOD RISK
15 minute winter 6 1.000 6.1 134.2 3.374 1.206 2.3012
15 minute winter 6.1 11 16.439 0.189 152.2 0.3409 0.0000 OK
15 minute winter 6.1 1.001 7 151.9 2.515 0.241 0.5479
15 minute winter 7 11 16.218 0.243 242.4 0.6940 0.0000 OK
15 minute winter 7 1.002 5 238.6 2.210 0.378 4.6243
15 minute winter 5 11 15.846 1.296 424.0 7.5359 0.0000 FLOOD RISK
15 minute winter 5 1.003 4 407.9 2.575 0.987 8.2612
15 minute winter 1 11 17.357 0.197 162.1 0.5462 0.0000 OK
15 minute winter 1 2.000 1.1 155.5 1.788 0.377 4.9130
15 minute winter 1.1 11 16.700 2.000 166.7 3.2420 1.7068 FLOOD
15 minute winter 1.1 2.001 2 150.2 1.362 0.809 0.6397
15 minute winter 2 11 16.631 2.011 242.5 6.1466 0.0000 FLOOD RISK
15 minute winter 2 2.002 2.1 238.4 2.162 1.220 4.2739
15 minute winter 2.1 10 15.950 1.700 250.2 2.8339 28.6686 FLOOD
15 minute winter 2.1 2.003 3 161.4 1.464 1.051 5.5902
15 minute winter 3 10 15.735 1.785 439.3 12.7342 18.3424 FLOOD
15 minute winter 3 2.004 4 319.3 2.015 1.497 14.4634
15 minute winter 4 11 14.825 1.275 723.9 1.6492 0.0000 SURCHARGED
15 minute winter 4 1.004 In 723.4 2.569 1.815 8.3368
15 minute winter In 11 14.330 0.880 733.5 1.1122 0.0000 SURCHARGED
15 minute winter In 1.005 125 733.2 2.605 1.601 6.1771
15 minute winter 25.4 10 14.375 0.175 67.3 0.5192 0.0000 OK
15 minute winter 25.4 3.000 25.1 66.3 1.059 0.311 3.5290
15 minute winter 25.1 11 14.162 0.207 66.3 0.2959 0.0000 OK
15 minute winter 25.1 3.001 25.2 65.8 0.968 0.408 3.2427
15 minute winter 25.2 12 14.030 0.195 65.8 0.2789 0.0000 OK
15 minute winter 25.2 3.002 25.3 64.8 1.077 0.378 3.0744
15 minute winter 25.3 12 13.860 0.170 64.8 0.1926 0.0000 OK
15 minute winter 25.3 3.003 125 63.6 1.220 0.276 1.4418
60 minute winter 110 50 20.649 0.149 31.6 0.3647 0.0000 OK
60 minute winter 110 4.000 111 31.5 1.151 0.745 2.7716
60 minute winter 111 50 20.402 0.448 45.6 0.9915 0.0000 SURCHARGED
60 minute winter 111 4.001 112 44.9 1.416 0.689 0.8981
60 minute winter 112 48 20.200 0.600 64.8 2.6784 0.8467 FLOOD
60 minute winter 112 4.002 113 61.6 1.549 0.943 2.5265
60 minute winter 113 48 19.218 0.618 70.5 1.0133 0.0000 SURCHARGED
60 minute winter 113 4.003 114 70.5 1.772 1.788 1.0173
60 minute winter 114 48 18.661 0.211 101.7 0.5466 0.0000 OK
60 minute winter 114 4.004 115 101.6 2.022 0.754 1.4900
60 minute winter 115 48 18.150 0.200 106.8 0.2692 0.0000 OK
60 minute winter 115 4.005 116 106.7 1.620 0.594 4.0543
60 minute winter 116 48 17.406 1.206 127.5 2.9203 0.0000 SURCHARGED
60 minute winter 116 4.006 117 127.4 1.810 1.538 0.6298
60 minute winter 117 43 17.200 1.050 130.1 1.4480 11.4037 FLOOD
60 minute winter 117 4.007 118 117.9 1.675 1.852 3.0100
30 minute winter 118 31 16.687 0.679 142.1 2.5625 0.0000 FLOOD RISK
30 minute winter 118 4.008 119 139.6 1.983 0.962 0.5507
30 minute winter 119 31 16.462 0.587 164.9 2.9163 0.0000 FLOOD RISK
30 minute winter 119 4.009 120 163.8 2.396 1.085 3.4345
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven14/02/2020
Page 16
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year +40% CC Cri cal Storm Dura on. Lowest mass balance: 99.81%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
30 minute winter 120 31 14.731 0.231 178.5 0.5556 0.0000 OK
30 minute winter 120 4.010 125 178.5 3.326 0.775 1.0063
30 minute winter 121 31 16.048 0.048 16.9 0.1710 0.0000 OK
30 minute winter 121 5.000 122 16.9 0.503 0.020 1.8450
30 minute winter 122 31 14.181 0.181 49.5 0.5058 0.0000 OK
30 minute winter 122 5.001 123 49.3 0.761 0.280 5.5961
30 minute winter 123 32 14.035 0.185 69.3 0.4594 0.0000 OK
30 minute winter 123 5.002 124 69.2 1.509 0.275 2.9238
60 minute winter 124 47 13.730 0.100 84.9 0.2318 0.0000 OK
60 minute winter 124 5.003 125 84.9 1.102 0.090 1.7910
15 minute winter 125 12 13.294 0.494 958.0 1.7465 0.0000 OK
15 minute winter 125 1.006 126 962.1 2.279 0.352 80.5722 892.5
15 minute winter 126 13 12.471 0.471 962.1 0.0000 0.0000 OK
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven14/02/2020
Page 1
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Design Se ngs
Rainfall MethodologyReturn Period (years)
Addi onal Flow (%)FSR Region
M5-60 (mm)Ra o-R
CVTime of Entry (mins)
FSR10England and Wales20.0000.4000.7505.00
Maximum Time of Concentra on (mins)Maximum Rainfall (mm/hr)
Minimum Velocity (m/s)Connec on Type
Minimum Backdrop Height (m)Preferred Cover Depth (m)
Include Intermediate GroundEnforce best prac ce design rules
30.0050.01.00Level So ts5.0001.200✓✓
Nodes
Name Area(ha)
T of E(mins)
CoverLevel(m)
Diameter(mm)
Eas ng(m)
Northing(m)
Depth(m)
8.189.191011.111121513232424.11718.118192021221001011021031042.32.42523.423.323.2Pump inPond
0.1490.3340.0720.1470.1650.1100.2270.1010.1720.2270.1220.025
0.0570.1340.1280.1650.0920.0660.0160.0740.3270.1170.3840.0090.0610.0370.0020.0060.0070.0030.179
5.005.005.005.005.005.005.005.005.005.005.005.00
5.005.005.005.005.005.005.00
20.0020.0020.0020.0020.00
5.005.005.005.005.005.005.00
22.77521.19520.50020.36520.30517.75016.98515.60015.85015.70015.70015.72015.67023.80021.96420.50021.18020.27018.01016.00020.00020.00020.00018.00017.00015.76015.72515.69015.70015.81116.00016.00016.295
120012001200120012001200120012001200120012001200120012001200120012001200120012001200120012001200120012001200120012001200120012001200
573964.128573903.757573783.104573815.762573793.734573793.282573792.915573792.104573813.784573848.269573883.275573906.698573907.143573985.663573931.297573922.846573963.016573955.216573922.279573907.699574013.128573996.117573987.190573975.229573966.416573955.983573907.143573907.143573911.410573911.521573927.811573941.443573941.705
157747.966157722.740157724.594157724.594157768.618157812.850157841.173157921.291157921.407157959.993157963.079157963.318157922.805157763.323157745.584157762.521157782.339157805.877157824.029157850.640157771.795157783.189157824.817157833.208157871.639157869.600157862.434157912.610157912.581157920.740157921.131157925.902157942.505
1.1251.4201.7101.8352.4151.6402.2201.5002.1501.2751.4201.6602.1701.6000.9401.4601.5801.0701.5802.2850.8001.2572.8241.4332.0701.3502.0402.3152.3502.5102.9503.0003.509
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven14/02/2020
Page 2
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Links
Name USNode
DSNode
Length(m)
ks (mm) /n
US IL(m)
DS IL(m)
Fall(m)
Slope(1:X)
Dia(mm)
T of C(mins)
Rain(mm/hr)
Name Vel(m/s)
Cap(l/s)
Flow(l/s)
USDepth
(m)
DSDepth
(m)
Σ Area(ha)
Σ AddIn ow
(l/s)
1.000 8.1 8 70.922 0.600 21.650 19.925 1.725 41.1 225 6.18 49.7
1.000 2.046 81.3 20.1 0.900 1.045 0.149 0.0
1.001 8 9 83.073 0.600 19.775 18.530 1.245 66.7 375 7.57 44.9
1.001 2.221 245.3 58.8 1.045 1.460 0.483 0.0
1.002 9 10 49.107 0.600 18.530 17.890 0.640 76.7 375 8.38 42.6
1.002 2.070 228.6 81.1 1.460 2.040 0.702 0.0
1.003 10 11.1 44.319 0.600 17.890 16.110 1.780 24.9 375 9.12 40.7
1.003 3.644 402.4 95.6 2.040 1.265 0.867 0.0
1.004 11.1 11 28.408 0.600 16.110 14.790 1.320 21.5 375 9.60 39.7
1.004 3.920 432.9 105.1 1.265 1.820 0.977 0.0
1.005 11 12 80.223 0.600 14.765 14.100 0.665 120.6 450 10.93 37.0
1.005 1.850 294.2 120.7 1.770 1.050 1.204 0.0
1.006 12 15 21.830 0.600 14.100 13.850 0.250 87.3 450 11.30 36.4
1.006 2.176 346.1 128.8 1.050 1.550 1.305 0.0
1.007 15 24.1 93.313 0.600 13.700 13.500 0.200 466.6 600 12.85 33.9
1.007 1.120 316.8 135.7 1.550 1.570 1.477 0.0
1.008 24.1 25 10.133 0.600 13.500 13.375 0.125 81.1 600 13.02 33.6
1.008 2.706 765.1 168.6 1.570 1.715 1.851 0.0
1.009 25 23.4 4.162 0.600 13.375 13.350 0.025 166.5 600 13.09 33.5
1.009 1.884 532.8 319.6 1.715 1.750 3.520 0.0
1.010 23.4 23.3 8.118 0.600 13.350 13.301 0.049 165.7 600 13.22 33.3
1.010 1.889 534.1 318.3 1.750 1.910 3.526 0.0
1.011 23.3 23.2 16.439 0.600 13.301 13.050 0.251 65.5 600 13.50 32.9
1.011 3.012 851.6 315.1 1.910 2.350 3.533 0.0
1.012 23.2 Pump in 14.306 0.600 13.050 13.000 0.050 286.1 600 13.74 32.6
1.012 1.434 405.5 312.4 2.350 2.400 3.536 0.0
1.013 Pump in Pond 21.362 0.600 13.000 12.786 0.214 99.8 600 14.09 32.1
1.013 2.437 689.1 323.2 2.400 2.909 3.715 0.0
2.000 9.1 9 32.602 0.600 18.790 18.680 0.110 296.4 225 5.25 50.0
2.000 0.754 30.0 9.8 1.485 1.460 0.072 0.0
3.000 19 20 24.797 0.600 19.600 19.200 0.400 62.0 225 5.25 50.0
3.000 1.664 66.1 22.4 1.355 0.845 0.165 0.0
3.001 20 21 37.617 0.600 19.200 16.655 2.545 14.8 225 5.42 50.0
3.001 3.421 136.0 34.8 0.845 1.130 0.257 0.0
3.002 21 22 62.205 0.600 16.430 13.715 2.715 22.9 450 6.04 50.0
3.002 4.261 677.7 87.0 1.130 1.835 0.642 0.0
3.003 22 2.4 11.984 0.600 13.715 13.685 0.030 399.5 450 6.06 50.0
3.003 1.011 160.8 89.2 1.835 1.590 0.658 0.0
3.004 2.4 25 50.399 0.600 13.685 13.375 0.310 162.6 450 8.53 42.2
3.004 1.591 253.1 190.7 1.590 1.865 1.667 0.0
4.000 18.1 18 18.749 0.600 21.024 19.115 1.909 9.8 150 5.17 50.0
4.000 3.233 57.1 18.2 0.790 1.235 0.134 0.0
4.001 18 21 61.420 0.600 19.040 16.655 2.385 25.8 225 6.36 49.0
4.001 2.588 102.9 42.4 1.235 1.130 0.319 0.0
5.000 100 101 10.967 0.600 19.200 18.743 0.457 24.0 150 5.41 50.0
5.000 2.064 36.5 10.0 0.650 1.107 0.074 0.0
5.001 101 102 37.617 0.600 18.743 17.176 1.567 24.0 150 5.80 50.0
5.001 2.064 36.5 54.3 1.107 2.674 0.401 0.0
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven14/02/2020
Page 3
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Links
Name USNode
DSNode
Length(m)
ks (mm) /n
US IL(m)
DS IL(m)
Fall(m)
Slope(1:X)
Dia(mm)
T of C(mins)
Rain(mm/hr)
Name Vel(m/s)
Cap(l/s)
Flow(l/s)
USDepth
(m)
DSDepth
(m)
Σ Area(ha)
Σ AddIn ow
(l/s)
5.002 102 103 14.611 0.600 17.176 16.567 0.609 24.0 150 6.04 50.0
5.002 2.064 36.5 70.2 2.674 1.283 0.518 0.0
5.003 103 104 39.286 0.600 16.567 14.930 1.637 24.0 150 6.68 47.8
5.003 2.064 36.5 116.9 1.283 1.920 0.902 0.0
5.004 104 2.3 10.967 0.600 14.930 14.410 0.520 21.1 150 6.86 47.2
5.004 2.202 38.9 116.5 1.920 1.200 0.911 0.0
5.005 2.3 2.4 49.402 0.600 14.410 13.685 0.725 68.1 375 7.68 44.6
5.005 2.197 242.7 117.5 0.975 1.665 0.972 0.0
6.000 13 23 35.064 0.600 14.425 14.280 0.145 241.8 225 5.58 50.0
6.000 0.836 33.2 30.8 1.050 1.195 0.227 0.0
6.001 23 24 23.486 0.600 14.280 14.135 0.145 162.0 225 5.98 50.0
6.001 1.024 40.7 47.3 1.195 1.360 0.349 0.0
6.002 24 24.1 40.607 0.600 14.060 13.800 0.260 156.2 300 6.65 47.9
6.002 1.255 88.7 48.6 1.360 1.570 0.374 0.0
7.000 17 18 20.213 0.600 22.200 19.115 3.085 6.6 225 5.34 50.0
7.000 5.144 204.5 7.7 1.375 1.160 0.057 0.0
Pipeline Schedule
Link Length(m)
Slope(1:X)
Dia(mm)
LinkType
US CL(m)
US IL(m)
US Depth(m)
DS CL(m)
DS IL(m)
DS Depth(m)
Link USNode
Dia(mm)
NodeType
MHType
DSNode
Dia(mm)
NodeType
MHType
1.000 70.922 41.1 225 Circular_Default Sewer Type 22.775 21.650 0.900 21.195 19.925 1.045
1.000 8.1 1200 Manhole Adoptable 8 1200 Manhole Adoptable
1.001 83.073 66.7 375 Circular_Default Sewer Type 21.195 19.775 1.045 20.365 18.530 1.460
1.001 8 1200 Manhole Adoptable 9 1200 Manhole Adoptable
1.002 49.107 76.7 375 Circular_Default Sewer Type 20.365 18.530 1.460 20.305 17.890 2.040
1.002 9 1200 Manhole Adoptable 10 1200 Manhole Adoptable
1.003 44.319 24.9 375 Circular_Default Sewer Type 20.305 17.890 2.040 17.750 16.110 1.265
1.003 10 1200 Manhole Adoptable 11.1 1200 Manhole Adoptable
1.004 28.408 21.5 375 Circular_Default Sewer Type 17.750 16.110 1.265 16.985 14.790 1.820
1.004 11.1 1200 Manhole Adoptable 11 1200 Manhole Adoptable
1.005 80.223 120.6 450 Circular_Default Sewer Type 16.985 14.765 1.770 15.600 14.100 1.050
1.005 11 1200 Manhole Adoptable 12 1200 Manhole Adoptable
1.006 21.830 87.3 450 Circular_Default Sewer Type 15.600 14.100 1.050 15.850 13.850 1.550
1.006 12 1200 Manhole Adoptable 15 1200 Manhole Adoptable
1.007 93.313 466.6 600 Circular_Default Sewer Type 15.850 13.700 1.550 15.670 13.500 1.570
1.007 15 1200 Manhole Adoptable 24.1 1200 Manhole Adoptable
1.008 10.133 81.1 600 Circular_Default Sewer Type 15.670 13.500 1.570 15.690 13.375 1.715
1.008 24.1 1200 Manhole Adoptable 25 1200 Manhole Adoptable
1.009 4.162 166.5 600 Circular_Default Sewer Type 15.690 13.375 1.715 15.700 13.350 1.750
1.009 25 1200 Manhole Adoptable 23.4 1200 Manhole Adoptable
1.010 8.118 165.7 600 Circular_Default Sewer Type 15.700 13.350 1.750 15.811 13.301 1.910
1.010 23.4 1200 Manhole Adoptable 23.3 1200 Manhole Adoptable
1.011 16.439 65.5 600 Circular_Default Sewer Type 15.811 13.301 1.910 16.000 13.050 2.350
1.011 23.3 1200 Manhole Adoptable 23.2 1200 Manhole Adoptable
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven14/02/2020
Page 4
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Pipeline Schedule
Link Length(m)
Slope(1:X)
Dia(mm)
LinkType
US CL(m)
US IL(m)
US Depth(m)
DS CL(m)
DS IL(m)
DS Depth(m)
Link USNode
Dia(mm)
NodeType
MHType
DSNode
Dia(mm)
NodeType
MHType
1.012 14.306 286.1 600 Circular_Default Sewer Type 16.000 13.050 2.350 16.000 13.000 2.400
1.012 23.2 1200 Manhole Adoptable Pump in 1200 Manhole Adoptable
1.013 21.362 99.8 600 Circular_Default Sewer Type 16.000 13.000 2.400 16.295 12.786 2.909
1.013 Pump in 1200 Manhole Adoptable Pond 1200 Manhole Adoptable
2.000 32.602 296.4 225 Circular_Default Sewer Type 20.500 18.790 1.485 20.365 18.680 1.460
2.000 9.1 1200 Manhole Adoptable 9 1200 Manhole Adoptable
3.000 24.797 62.0 225 Circular_Default Sewer Type 21.180 19.600 1.355 20.270 19.200 0.845
3.000 19 1200 Manhole Adoptable 20 1200 Manhole Adoptable
3.001 37.617 14.8 225 Circular_Default Sewer Type 20.270 19.200 0.845 18.010 16.655 1.130
3.001 20 1200 Manhole Adoptable 21 1200 Manhole Adoptable
3.002 62.205 22.9 450 Circular_Default Sewer Type 18.010 16.430 1.130 16.000 13.715 1.835
3.002 21 1200 Manhole Adoptable 22 1200 Manhole Adoptable
3.003 11.984 399.5 450 Circular_Default Sewer Type 16.000 13.715 1.835 15.725 13.685 1.590
3.003 22 1200 Manhole Adoptable 2.4 1200 Manhole Adoptable
3.004 50.399 162.6 450 Circular_Default Sewer Type 15.725 13.685 1.590 15.690 13.375 1.865
3.004 2.4 1200 Manhole Adoptable 25 1200 Manhole Adoptable
4.000 18.749 9.8 150 Circular_Default Sewer Type 21.964 21.024 0.790 20.500 19.115 1.235
4.000 18.1 1200 Manhole Adoptable 18 1200 Manhole Adoptable
4.001 61.420 25.8 225 Circular_Default Sewer Type 20.500 19.040 1.235 18.010 16.655 1.130
4.001 18 1200 Manhole Adoptable 21 1200 Manhole Adoptable
5.000 10.967 24.0 150 Circular_Default Sewer Type 20.000 19.200 0.650 20.000 18.743 1.107
5.000 100 1200 Manhole Adoptable 101 1200 Manhole Adoptable
5.001 37.617 24.0 150 Circular_Default Sewer Type 20.000 18.743 1.107 20.000 17.176 2.674
5.001 101 1200 Manhole Adoptable 102 1200 Manhole Adoptable
5.002 14.611 24.0 150 Circular_Default Sewer Type 20.000 17.176 2.674 18.000 16.567 1.283
5.002 102 1200 Manhole Adoptable 103 1200 Manhole Adoptable
5.003 39.286 24.0 150 Circular_Default Sewer Type 18.000 16.567 1.283 17.000 14.930 1.920
5.003 103 1200 Manhole Adoptable 104 1200 Manhole Adoptable
5.004 10.967 21.1 150 Circular_Default Sewer Type 17.000 14.930 1.920 15.760 14.410 1.200
5.004 104 1200 Manhole Adoptable 2.3 1200 Manhole Adoptable
5.005 49.402 68.1 375 Circular_Default Sewer Type 15.760 14.410 0.975 15.725 13.685 1.665
5.005 2.3 1200 Manhole Adoptable 2.4 1200 Manhole Adoptable
6.000 35.064 241.8 225 Circular_Default Sewer Type 15.700 14.425 1.050 15.700 14.280 1.195
6.000 13 1200 Manhole Adoptable 23 1200 Manhole Adoptable
6.001 23.486 162.0 225 Circular_Default Sewer Type 15.700 14.280 1.195 15.720 14.135 1.360
6.001 23 1200 Manhole Adoptable 24 1200 Manhole Adoptable
6.002 40.607 156.2 300 Circular_Default Sewer Type 15.720 14.060 1.360 15.670 13.800 1.570
6.002 24 1200 Manhole Adoptable 24.1 1200 Manhole Adoptable
7.000 20.213 6.6 225 Circular_Default Sewer Type 23.800 22.200 1.375 20.500 19.115 1.160
7.000 17 1200 Manhole Adoptable 18 1200 Manhole Adoptable
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven14/02/2020
Page 5
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
8.1
8
9.1
9
10
11.1
11
12
15
13
23
24
24.1
573964.128
573903.757
573783.104
573815.762
573793.734
573793.282
573792.915
573792.104
573813.784
573848.269
573883.275
573906.698
573907.143
157747.966
157722.740
157724.594
157724.594
157768.618
157812.850
157841.173
157921.291
157921.407
157959.993
157963.079
157963.318
157922.805
22.775
21.195
20.500
20.365
20.305
17.750
16.985
15.600
15.850
15.700
15.700
15.720
15.670
1.125
1.420
1.710
1.835
2.415
1.640
2.220
1.500
2.150
1.275
1.420
1.660
2.170
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
0
10
0
1 2
0
1
0
1
0
1
0
1
0
1 0
0
1 0
1
0
1
2
0
01
0
012
01
01
01
01
01
0
01
01
012
0
1.0001.000
1.001
2.0002.0001.001
1.0021.002
1.0031.003
1.0041.004
1.0051.005
1.0061.006
1.007
6.0006.000
6.0016.001
6.0026.0021.007
1.008
21.65019.925
19.775
18.79018.68018.530
18.53017.890
17.89016.110
16.11014.790
14.76514.100
14.10013.850
13.700
14.42514.280
14.28014.135
14.06013.80013.500
13.500
225225
375
225225375
375375
375375
375375
450450
450450
600
225225
225225
300300600
600
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven14/02/2020
Page 6
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
17
18.1
18
19
20
21
22
100
101
102
103
104
2.3
573985.663
573931.297
573922.846
573963.016
573955.216
573922.279
573907.699
574013.128
573996.117
573987.190
573975.229
573966.416
573955.983
157763.323
157745.584
157762.521
157782.339
157805.877
157824.029
157850.640
157771.795
157783.189
157824.817
157833.208
157871.639
157869.600
23.800
21.964
20.500
21.180
20.270
18.010
16.000
20.000
20.000
20.000
18.000
17.000
15.760
1.600
0.940
1.460
1.580
1.070
1.580
2.285
0.800
1.257
2.824
1.433
2.070
1.350
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
0
0
1
2
0
0
1
0
1
2
0
1
0
0
1
0
1
0
1
0
1
0
10
0
012
0
01
012
01
0
01
01
01
01
01
0
7.000
4.0007.0004.000
4.001
3.0003.000
3.0014.0013.001
3.0023.002
3.003
5.0005.000
5.0015.001
5.0025.002
5.0035.003
5.0045.004
5.005
22.200
21.02419.11519.115
19.040
19.60019.200
19.20016.65516.655
16.43013.715
13.715
19.20018.743
18.74317.176
17.17616.567
16.56714.930
14.93014.410
14.410
225
150225150
225
225225
225225225
450450
450
150150
150150
150150
150150
150150
375
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven14/02/2020
Page 7
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
2.4
25
23.4
23.3
23.2
Pump in
Pond
573907.143
573907.143
573911.410
573911.521
573927.811
573941.443
573941.705
157862.434
157912.610
157912.581
157920.740
157921.131
157925.902
157942.505
15.725
15.690
15.700
15.811
16.000
16.000
16.295
2.040
2.315
2.350
2.510
2.950
3.000
3.509
1200
1200
1200
1200
1200
1200
1200
1
2
0
1
2
0
1
0
1
0
10
1
0
1
12
012
01
01
01
01
01
5.0053.003
3.0043.0041.008
1.0091.009
1.0101.010
1.0111.011
1.0121.012
1.0131.013
13.68513.685
13.68513.37513.375
13.37513.350
13.35013.301
13.30113.050
13.05013.000
13.00012.786
375450
450450600
600600
600600
600600
600600
600600
Simula on Se ngs
Rainfall MethodologyFSR Region
M5-60 (mm)Ra o-R
Summer CVWinter CV
Analysis Speed
FSREngland and Wales20.0000.4000.7500.840Detailed
Skip Steady StateDrain Down Time (mins)
Addi onal Storage (m³/ha)Check Discharge Rate(s)
Check Discharge Volume100 year 360 minute (m³)
x150020.0✓✓
Storm Dura ons15 30 60 120 180 240 360 480 600 720 960 1440
Return Period(years)
Climate Change(CC %)
Addi onal Area(A %)
Addi onal Flow(Q %)
130
100100
000
40
0000
0000
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven14/02/2020
Page 8
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Pre-development Discharge Rate
Site MakeupGreen eld Method
Posi vely Drained Area (ha)SAAR (mm)
Soil IndexSPR
RegionGrowth Factor 1 year
Green eldIH124
10.1010.85
Growth Factor 30 yearGrowth Factor 100 year
Be erment (%)QBar
Q 1 year (l/s)Q 30 year (l/s)
Q 100 year (l/s)
1.952.480
Pre-development Discharge Volume
Site MakeupGreen eld Method
Posi vely Drained Area (ha)Soil Index
SPRCWI
Green eldFSR/FEH
10.10
Return Period (years)Climate Change (%)
Storm Dura on (mins)Be erment (%)
PRRuno Volume (m³)
10003600
Node Pump in Online Head/Flow Control
Flap Valve x Replaces Downstream Link ✓ Invert Level (m) 13.000
Head(m)
Flow(l/s)
Head(m)
Flow(l/s)
Head(m)
Flow(l/s)
Head(m)
Flow(l/s)
0.500 80.000 1.000 90.000 2.000 100.000 3.000 100.000
Node Pump in Depth/Area Storage Structure
Base Inf Coe cient (m/hr)Side Inf Coe cient (m/hr)
0.000000.00000
Safety FactorPorosity
2.01.00
Invert Level (m)Time to half empty (mins)
13.82022
Depth(m)
Area(m²)
Inf Area(m²)
Depth(m)
Area(m²)
Inf Area(m²)
Depth(m)
Area(m²)
Inf Area(m²)
0.000 875.0 0.0 0.785 1075.0 0.0 1.785 1293.0 0.0
Other (defaults)
Entry Loss (manhole)Exit Loss (manhole)
0.2500.250
Entry Loss (junc on)Exit Loss (junc on)
0.0000.000
Apply Recommended LossesFlood Risk (m)
x0.300
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven14/02/2020
Page 9
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 1 year Cri cal Storm Dura on. Lowest mass balance: 98.43%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 8.1 11 21.727 0.077 21.0 0.2914 0.0000 OK
15 minute winter 8.1 1.000 8 20.3 1.701 0.249 0.8446
15 minute winter 8 11 19.905 0.130 67.0 0.7613 0.0000 OK
15 minute winter 8 1.001 9 65.4 1.551 0.267 3.5618
15 minute winter 9.1 11 18.881 0.091 10.2 0.1794 0.0000 OK
15 minute winter 9.1 2.000 9 9.8 0.707 0.328 0.4544
15 minute winter 9 11 18.708 0.178 95.2 0.4878 0.0000 OK
15 minute winter 9 1.002 10 95.4 2.118 0.417 2.2153
15 minute winter 10 11 18.033 0.143 117.3 0.3568 0.0000 OK
15 minute winter 10 1.003 11.1 117.4 3.088 0.292 1.6852
15 minute winter 11.1 11 16.250 0.140 132.0 0.3464 0.0000 OK
15 minute winter 11.1 1.004 11 131.8 2.532 0.304 1.4808
15 minute winter 11 11 15.009 0.244 161.9 0.7743 0.0000 OK
15 minute winter 11 1.005 12 161.7 1.821 0.550 7.1236
15 minute winter 12 12 14.350 0.250 175.1 0.6206 0.0000 OK
15 minute winter 12 1.006 15 170.5 2.048 0.493 2.0436
15 minute winter 15 13 14.130 0.430 193.1 1.1737 0.0000 OK
15 minute winter 15 1.007 24.1 183.3 1.085 0.579 23.1960
15 minute winter 13 11 14.617 0.192 32.0 0.8998 0.0000 OK
15 minute winter 13 6.000 23 29.9 0.828 0.899 1.3296
15 minute winter 23 11 14.519 0.239 47.1 0.6823 0.0000 SURCHARGED
15 minute winter 23 6.001 24 44.8 1.180 1.100 0.8605
15 minute summer 24 11 14.217 0.157 46.5 0.2247 0.0000 OK
15 minute summer 24 6.002 24.1 49.0 1.209 0.552 2.0396
15 minute winter 24.1 13 14.093 0.593 230.6 0.6708 0.0000 OK
15 minute winter 24.1 1.008 25 226.2 0.968 0.296 2.8516
15 minute winter 17 10 22.231 0.031 8.0 0.0567 0.0000 OK
15 minute winter 17 7.000 18 7.9 2.479 0.039 0.0647
15 minute winter 18.1 10 21.085 0.061 18.9 0.2444 0.0000 OK
15 minute winter 18.1 4.000 18 18.7 2.827 0.327 0.1238
15 minute winter 18 10 19.144 0.104 44.6 0.3004 0.0000 OK
15 minute winter 18 4.001 21 43.5 2.470 0.423 1.0852
15 minute winter 19 10 19.697 0.097 23.3 0.3127 0.0000 OK
15 minute winter 19 3.000 20 23.0 1.583 0.347 0.3603
15 minute winter 20 10 19.280 0.080 36.0 0.2286 0.0000 OK
15 minute winter 20 3.001 21 35.3 2.843 0.260 0.4675
15 minute winter 21 11 16.538 0.108 88.1 0.2123 0.0000 OK
15 minute winter 21 3.002 22 87.9 1.523 0.130 5.6020
15 minute winter 22 13 14.151 0.436 90.0 0.5543 0.0000 OK
15 minute winter 22 3.003 2.4 83.0 1.013 0.517 1.8906
30 minute winter 100 25 19.236 0.036 4.6 0.1074 0.0000 OK
30 minute winter 100 5.000 101 4.6 0.652 0.126 0.1131
30 minute winter 101 32 18.916 0.173 25.0 1.0971 0.0000 SURCHARGED
30 minute winter 101 5.001 102 24.5 1.904 0.672 0.6622
30 minute winter 102 32 18.382 1.206 31.8 2.3643 0.0000 SURCHARGED
30 minute winter 102 5.002 103 27.0 1.640 0.741 0.2572
30 minute winter 103 32 18.000 1.433 50.7 9.3002 0.2163 FLOOD
30 minute winter 103 5.003 104 42.6 2.421 1.169 0.6916
30 minute winter 104 33 15.420 0.490 43.1 0.5971 0.0000 SURCHARGED
30 minute winter 104 5.004 2.3 43.0 2.571 1.105 0.1696
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven14/02/2020
Page 10
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 1 year Cri cal Storm Dura on. Lowest mass balance: 98.43%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
30 minute winter 2.3 32 14.516 0.106 43.5 0.2160 0.0000 OK
30 minute winter 2.3 5.005 2.4 43.5 0.964 0.179 3.3333
15 minute winter 2.4 13 14.148 0.463 129.7 0.6911 0.0000 SURCHARGED
15 minute winter 2.4 3.004 25 121.5 1.041 0.480 7.9854
15 minute winter 25 13 14.074 0.699 313.7 0.8021 0.0000 SURCHARGED
15 minute winter 25 1.009 23.4 314.1 1.227 0.589 1.1723
15 minute winter 23.4 13 14.034 0.684 314.6 0.8088 0.0000 SURCHARGED
15 minute winter 23.4 1.010 23.3 314.7 1.589 0.589 2.2867
15 minute winter 23.3 14 13.989 0.688 315.3 0.8167 0.0000 SURCHARGED
15 minute winter 23.3 1.011 23.2 315.3 1.157 0.370 4.6305
30 minute winter 23.2 31 13.944 0.894 271.7 1.0294 0.0000 SURCHARGED
30 minute winter 23.2 1.012 Pump in 271.4 0.964 0.669 4.0297
30 minute winter Pump in 32 13.940 0.940 285.4 109.0411 0.0000 SURCHARGED
30 minute winter Pump in Head/Flow Pond 88.8 315.5
15 minute summer Pond 1 12.786 0.000 88.0 0.0000 0.0000 OK
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven14/02/2020
Page 11
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 30 year Cri cal Storm Dura on. Lowest mass balance: 98.43%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 8.1 10 21.780 0.130 51.5 0.4904 0.0000 OK
15 minute winter 8.1 1.000 8 49.8 2.140 0.612 1.6500
15 minute winter 8 10 19.993 0.218 165.0 1.2745 0.0000 OK
15 minute winter 8 1.001 9 161.6 1.871 0.659 7.2424
15 minute winter 9.1 11 18.950 0.160 24.9 0.3159 0.0000 OK
15 minute winter 9.1 2.000 9 24.2 0.799 0.808 1.1132
15 minute winter 9 11 18.886 0.356 236.7 0.9718 0.0000 OK
15 minute winter 9 1.002 10 231.9 2.496 1.014 5.1463
15 minute winter 10 12 18.244 0.354 285.6 0.8841 0.0000 OK
15 minute winter 10 1.003 11.1 280.4 3.538 0.697 4.8340
15 minute winter 11.1 12 17.462 1.352 318.5 3.3430 0.0000 FLOOD RISK
15 minute winter 11.1 1.004 11 289.7 2.682 0.669 3.1333
15 minute winter 11 12 16.693 1.928 349.3 6.1249 0.0000 FLOOD RISK
15 minute winter 11 1.005 12 351.6 2.219 1.195 12.7108
15 minute winter 12 11 15.600 1.500 378.9 3.7170 10.1541 FLOOD
15 minute winter 12 1.006 15 326.1 2.123 0.942 3.4588
15 minute winter 15 12 15.318 1.618 368.3 4.4183 0.0000 SURCHARGED
15 minute winter 15 1.007 24.1 369.7 1.313 1.167 26.2841
15 minute winter 13 11 15.700 1.275 78.5 5.9823 5.8259 FLOOD
15 minute winter 13 6.000 23 45.4 1.142 1.366 1.3945
15 minute winter 23 11 15.604 1.324 85.1 3.7708 0.0000 FLOOD RISK
15 minute winter 23 6.001 24 73.5 1.849 1.805 0.9341
15 minute winter 24 12 15.222 1.162 81.6 1.6645 0.0000 SURCHARGED
15 minute winter 24 6.002 24.1 68.1 1.209 0.767 2.8595
15 minute winter 24.1 12 15.050 1.550 437.0 1.7531 0.0000 SURCHARGED
15 minute winter 24.1 1.008 25 434.6 1.543 0.568 2.8542
15 minute winter 17 10 22.247 0.047 19.7 0.0863 0.0000 OK
15 minute winter 17 7.000 18 19.6 2.432 0.096 0.2859
15 minute winter 18.1 10 21.130 0.106 46.4 0.4224 0.0000 OK
15 minute winter 18.1 4.000 18 46.1 3.298 0.806 0.2695
15 minute winter 18 11 19.240 0.200 110.0 0.5754 0.0000 OK
15 minute winter 18 4.001 21 107.2 2.914 1.042 2.3639
15 minute winter 19 10 19.776 0.176 57.1 0.5653 0.0000 OK
15 minute winter 19 3.000 20 56.2 1.911 0.850 0.7257
15 minute winter 20 10 19.337 0.137 88.0 0.3904 0.0000 OK
15 minute winter 20 3.001 21 86.8 3.545 0.638 0.9213
15 minute winter 21 11 16.602 0.171 216.1 0.3372 0.0000 OK
15 minute winter 21 3.002 22 215.3 1.781 0.318 6.6527
15 minute winter 22 12 15.450 1.735 220.6 2.2049 0.0000 SURCHARGED
15 minute winter 22 3.003 2.4 203.1 1.282 1.264 1.8988
30 minute winter 100 22 20.000 0.800 12.3 2.3848 8.2748 FLOOD
30 minute winter 100 5.000 101 8.4 0.687 0.231 0.1931
30 minute winter 101 22 20.000 1.257 50.7 7.9618 15.8220 FLOOD
30 minute winter 101 5.001 102 31.0 1.937 0.850 0.6622
30 minute winter 102 27 19.098 1.922 44.5 3.7670 0.0000 SURCHARGED
30 minute winter 102 5.002 103 43.5 2.471 1.193 0.2572
60 minute winter 103 31 18.000 1.433 96.4 9.3002 64.7328 FLOOD
60 minute winter 103 5.003 104 42.8 2.434 1.175 0.6916
15 minute winter 104 13 16.028 1.098 43.6 1.3378 0.0000 SURCHARGED
15 minute winter 104 5.004 2.3 45.1 2.603 1.159 0.1931
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven14/02/2020
Page 12
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 30 year Cri cal Storm Dura on. Lowest mass balance: 98.43%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 2.3 12 15.412 1.002 86.2 2.0397 0.0000 SURCHARGED
15 minute winter 2.3 5.005 2.4 72.1 0.919 0.297 5.4489
15 minute winter 2.4 12 15.364 1.679 260.6 2.5082 0.0000 SURCHARGED
15 minute winter 2.4 3.004 25 260.9 1.647 1.031 7.9854
15 minute winter 25 12 14.960 1.585 674.6 1.8193 0.0000 SURCHARGED
15 minute winter 25 1.009 23.4 674.3 2.394 1.266 1.1723
15 minute winter 23.4 12 14.774 1.424 675.9 1.6835 0.0000 SURCHARGED
15 minute winter 23.4 1.010 23.3 675.6 2.399 1.265 2.2867
15 minute winter 23.3 13 14.554 1.253 677.5 1.4871 0.0000 SURCHARGED
15 minute winter 23.3 1.011 23.2 677.0 2.404 0.795 4.6305
60 minute winter 23.2 60 14.325 1.275 462.5 1.4679 0.0000 SURCHARGED
60 minute winter 23.2 1.012 Pump in 462.0 1.640 1.139 4.0297
60 minute winter Pump in 62 14.320 1.320 491.8 472.4282 0.0000 SURCHARGED
60 minute winter Pump in Head/Flow Pond 93.2 878.5
15 minute summer Pond 1 12.786 0.000 91.2 0.0000 0.0000 OK
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven14/02/2020
Page 13
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year Cri cal Storm Dura on. Lowest mass balance: 98.43%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 8.1 10 21.806 0.156 66.9 0.5878 0.0000 OK
15 minute winter 8.1 1.000 8 65.2 2.244 0.801 2.4138
15 minute winter 8 12 20.393 0.618 214.2 3.6087 0.0000 SURCHARGED
15 minute winter 8 1.001 9 200.6 1.894 0.818 9.1627
15 minute winter 9.1 12 19.849 1.059 32.3 2.0885 0.0000 SURCHARGED
15 minute winter 9.1 2.000 9 30.4 0.851 1.014 1.2966
15 minute winter 9 12 19.765 1.235 290.2 3.3740 0.0000 SURCHARGED
15 minute winter 9 1.002 10 238.1 2.364 1.041 5.4164
15 minute winter 10 12 18.931 1.041 309.3 2.5998 0.0000 SURCHARGED
15 minute winter 10 1.003 11.1 299.1 3.510 0.743 4.8883
15 minute winter 11.1 11 17.750 1.640 345.6 4.0541 4.7750 FLOOD
15 minute winter 11.1 1.004 11 312.9 2.837 0.723 3.1333
15 minute winter 11 11 16.942 2.177 389.3 6.9144 0.0000 FLOOD RISK
15 minute winter 11 1.005 12 390.7 2.466 1.328 12.7108
15 minute winter 12 10 15.600 1.500 433.4 3.7170 41.4354 FLOOD
15 minute winter 12 1.006 15 325.1 2.062 0.939 3.4588
15 minute winter 15 12 15.387 1.687 379.5 4.6067 0.0000 SURCHARGED
15 minute winter 15 1.007 24.1 371.3 1.318 1.172 26.2841
15 minute winter 13 9 15.700 1.275 101.9 5.9823 20.6158 FLOOD
15 minute winter 13 6.000 23 44.9 1.130 1.352 1.3945
15 minute winter 23 10 15.700 1.420 96.5 4.0456 0.2470 FLOOD
15 minute winter 23 6.001 24 72.0 1.811 1.768 0.9341
15 minute winter 24 12 15.325 1.265 80.8 1.8109 0.0000 SURCHARGED
15 minute winter 24 6.002 24.1 73.0 1.274 0.822 2.8595
15 minute winter 24.1 12 15.159 1.659 444.2 1.8758 0.0000 SURCHARGED
15 minute winter 24.1 1.008 25 441.6 1.568 0.577 2.8542
15 minute winter 17 10 22.253 0.053 25.6 0.0984 0.0000 OK
15 minute winter 17 7.000 18 25.5 2.530 0.125 0.4746
15 minute winter 18.1 12 21.544 0.520 60.2 2.0710 0.0000 SURCHARGED
15 minute winter 18.1 4.000 18 53.9 3.318 0.943 0.3301
15 minute winter 18 12 20.007 0.967 131.8 2.7898 0.0000 SURCHARGED
15 minute winter 18 4.001 21 114.1 3.006 1.109 2.4424
15 minute winter 19 11 19.948 0.348 74.1 1.1205 0.0000 SURCHARGED
15 minute winter 19 3.000 20 70.1 1.895 1.060 0.8726
15 minute winter 20 11 19.362 0.162 109.0 0.4619 0.0000 OK
15 minute winter 20 3.001 21 109.4 3.703 0.804 1.1110
15 minute winter 21 11 16.648 0.218 250.1 0.4293 0.0000 OK
15 minute winter 21 3.002 22 246.4 1.828 0.364 7.2995
15 minute winter 22 12 15.800 2.085 253.2 2.6504 0.0000 FLOOD RISK
15 minute winter 22 3.003 2.4 246.5 1.556 1.533 1.8988
60 minute winter 100 33 20.000 0.800 13.8 2.3848 15.6022 FLOOD
60 minute winter 100 5.000 101 7.7 0.665 0.211 0.1931
30 minute winter 101 20 20.000 1.257 65.3 7.9618 33.3556 FLOOD
30 minute winter 101 5.001 102 32.1 1.931 0.880 0.6622
30 minute winter 102 26 19.262 2.086 47.2 4.0885 0.0000 SURCHARGED
30 minute winter 102 5.002 103 46.6 2.650 1.279 0.2572
60 minute winter 103 28 18.000 1.433 116.4 9.3002 103.1939 FLOOD
60 minute winter 103 5.003 104 42.9 2.439 1.177 0.6916
15 minute winter 104 13 16.288 1.358 43.9 1.6539 0.0000 SURCHARGED
15 minute winter 104 5.004 2.3 46.3 2.629 1.189 0.1931
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven14/02/2020
Page 14
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year Cri cal Storm Dura on. Lowest mass balance: 98.43%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 2.3 12 15.714 1.304 86.6 2.6530 0.0000 FLOOD RISK
15 minute winter 2.3 5.005 2.4 70.5 0.915 0.291 5.4489
15 minute winter 2.4 12 15.668 1.983 315.0 2.9619 0.0000 FLOOD RISK
15 minute winter 2.4 3.004 25 314.7 1.986 1.243 7.9854
15 minute winter 25 12 15.080 1.705 705.1 1.9570 0.0000 SURCHARGED
15 minute winter 25 1.009 23.4 703.9 2.499 1.321 1.1723
30 minute winter 23.4 21 14.881 1.531 678.4 1.8102 0.0000 SURCHARGED
30 minute winter 23.4 1.010 23.3 677.4 2.405 1.268 2.2867
30 minute winter 23.3 22 14.682 1.381 679.8 1.6393 0.0000 SURCHARGED
30 minute winter 23.3 1.011 23.2 678.7 2.410 0.797 4.6305
120 minute winter 23.2 116 14.549 1.499 395.8 1.7258 0.0000 SURCHARGED
120 minute winter 23.2 1.012 Pump in 395.4 1.404 0.975 4.0297
120 minute winter Pump in 118 14.544 1.544 420.3 704.2477 0.0000 SURCHARGED
120 minute winter Pump in Head/Flow Pond 95.4 1402.9
15 minute summer Pond 1 12.786 0.000 92.0 0.0000 0.0000 OK
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven14/02/2020
Page 15
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year +40% CC Cri cal Storm Dura on. Lowest mass balance: 98.43%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 8.1 12 22.770 1.120 93.7 4.2337 0.0000 FLOOD RISK
15 minute winter 8.1 1.000 8 81.3 2.213 1.000 2.8206
15 minute winter 8 10 21.195 1.420 278.8 8.2857 12.7839 FLOOD
15 minute winter 8 1.001 9 209.0 1.983 0.852 9.1627
15 minute winter 9.1 10 20.500 1.710 45.3 3.3738 2.1212 FLOOD
15 minute winter 9.1 2.000 9 30.8 0.929 1.026 1.2966
15 minute winter 9 10 20.365 1.835 306.4 5.0151 7.7175 FLOOD
15 minute winter 9 1.002 10 273.3 2.478 1.195 5.4164
15 minute winter 10 10 19.422 1.532 360.7 3.8260 0.0000 SURCHARGED
15 minute winter 10 1.003 11.1 352.7 3.495 0.876 4.8883
15 minute winter 11.1 9 17.750 1.640 419.2 4.0541 33.7108 FLOOD
15 minute winter 11.1 1.004 11 320.3 2.904 0.740 3.1333
15 minute winter 11 9 16.985 2.220 428.7 7.0507 5.1283 FLOOD
15 minute winter 11 1.005 12 396.4 2.502 1.347 12.7108
30 minute winter 12 15 15.600 1.500 445.6 3.7170 111.2635 FLOOD
30 minute winter 12 1.006 15 298.8 1.975 0.863 3.4588
15 minute winter 15 10 15.447 1.747 387.6 4.7711 0.0000 SURCHARGED
15 minute winter 15 1.007 24.1 374.4 1.329 1.182 26.2841
30 minute winter 13 15 15.700 1.275 110.6 5.9823 44.9730 FLOOD
30 minute winter 13 6.000 23 40.6 1.020 1.220 1.3945
15 minute winter 23 9 15.700 1.420 104.7 4.0456 4.6271 FLOOD
15 minute winter 23 6.001 24 70.9 1.784 1.742 0.9341
30 minute winter 24 20 15.396 1.336 74.3 1.9126 0.0000 SURCHARGED
30 minute winter 24 6.002 24.1 69.4 1.160 0.782 2.8595
30 minute winter 24.1 22 15.242 1.742 436.4 1.9706 0.0000 SURCHARGED
30 minute winter 24.1 1.008 25 433.3 1.538 0.566 2.8542
15 minute winter 17 10 22.263 0.063 35.8 0.1166 0.0000 OK
15 minute winter 17 7.000 18 35.7 2.573 0.174 0.4942
15 minute winter 18.1 10 21.964 0.940 84.2 3.7431 5.8218 FLOOD
15 minute winter 18.1 4.000 18 49.5 3.328 0.867 0.3301
15 minute winter 18 10 20.500 1.460 161.2 4.2106 5.0394 FLOOD
15 minute winter 18 4.001 21 122.7 3.085 1.192 2.4426
15 minute winter 19 12 20.613 1.013 103.7 3.2617 0.0000 SURCHARGED
15 minute winter 19 3.000 20 89.3 2.246 1.350 0.9862
15 minute winter 20 12 19.760 0.560 146.4 1.5963 0.0000 SURCHARGED
15 minute winter 20 3.001 21 135.5 3.862 0.996 1.4960
15 minute winter 21 11 16.708 0.278 292.6 0.5470 0.0000 OK
15 minute winter 21 3.002 22 292.3 2.019 0.431 8.1285
15 minute winter 22 10 15.930 2.215 301.6 2.8158 0.0000 FLOOD RISK
15 minute winter 22 3.003 2.4 305.2 1.926 1.898 1.8988
60 minute winter 100 29 20.000 0.800 19.2 2.3848 26.2969 FLOOD
60 minute winter 100 5.000 101 7.5 0.664 0.205 0.1931
60 minute winter 101 29 20.000 1.257 84.4 7.9618 72.9975 FLOOD
60 minute winter 101 5.001 102 29.5 1.899 0.808 0.6622
30 minute winter 102 26 19.527 2.351 51.6 4.6080 0.0000 SURCHARGED
30 minute winter 102 5.002 103 51.3 2.915 1.406 0.2572
120 minute winter 103 48 18.000 1.433 116.8 9.3002 174.3635 FLOOD
120 minute winter 103 5.003 104 42.7 2.428 1.172 0.6916
30 minute winter 104 22 16.364 1.434 43.9 1.7464 0.0000 SURCHARGED
30 minute winter 104 5.004 2.3 44.9 2.549 1.153 0.1931
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven14/02/2020
Page 16
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year +40% CC Cri cal Storm Dura on. Lowest mass balance: 98.43%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 2.3 10 15.760 1.350 71.7 2.7473 4.2844 FLOOD
15 minute winter 2.3 5.005 2.4 69.8 0.909 0.288 5.4489
15 minute winter 2.4 10 15.725 2.040 380.1 3.0478 12.5750 FLOOD
15 minute winter 2.4 3.004 25 321.0 2.026 1.268 7.9854
30 minute winter 25 22 15.179 1.804 700.2 2.0715 0.0000 SURCHARGED
30 minute winter 25 1.009 23.4 699.0 2.482 1.312 1.1723
60 minute winter 23.4 38 15.029 1.679 644.0 1.9842 0.0000 SURCHARGED
60 minute winter 23.4 1.010 23.3 643.3 2.284 1.205 2.2867
120 minute winter 23.3 116 14.934 1.633 531.2 1.9381 0.0000 SURCHARGED
120 minute winter 23.3 1.011 23.2 530.6 1.884 0.623 4.6305
120 minute winter 23.2 118 14.925 1.875 531.2 2.1581 0.0000 SURCHARGED
120 minute winter 23.2 1.012 Pump in 530.6 1.884 1.309 4.0297
120 minute winter Pump in 120 14.919 1.919 566.2 1118.1370 0.0000 SURCHARGED
120 minute winter Pump in Head/Flow Pond 99.2 1882.1
15 minute summer Pond 1 12.786 0.000 92.8 0.0000 0.0000 OK
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven06/03/2020
Page 1
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Design Se ngs
Rainfall MethodologyReturn Period (years)
Addi onal Flow (%)FSR Region
M5-60 (mm)Ra o-R
CVTime of Entry (mins)
FSR10England and Wales20.0000.4000.7505.00
Maximum Time of Concentra on (mins)Maximum Rainfall (mm/hr)
Minimum Velocity (m/s)Connec on Type
Minimum Backdrop Height (m)Preferred Cover Depth (m)
Include Intermediate GroundEnforce best prac ce design rules
30.000.01.00Level So ts6.0001.200✓✓
Nodes
Name Area(ha)
T of E(mins)
CoverLevel(m)
Diameter(mm)
Eas ng(m)
Northing(m)
Depth(m)
66.17511.122.134In25.425.125.225.3110111112113114115116117118119120121122123124125126
0.2680.0320.1530.3070.2580.0190.1690.0200.5090.0200.0170.107
0.1500.0670.1000.0450.1500.0250.1000.0130.1290.1200.0700.0800.1540.0950.0750.011
5.005.005.005.005.005.005.005.005.005.005.005.00
30.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.0030.00
20.80017.97018.12515.95020.99016.70016.70015.95015.73516.00016.00015.60015.65515.77515.67022.77521.19520.20020.36520.50020.30517.75017.20016.98516.50015.60016.90017.00016.50016.35015.80015.000
12001350135013501350135013501350135012001200135013501350120012001200120012001200120012001200120012001200150015001500150021002100
573814.692573814.094573814.029573809.820573906.260573905.771573901.622573901.225573900.598573809.815573809.607573909.011573908.445573860.312573810.729573975.970573900.355573878.394573814.877573791.732573780.291573780.291573777.661573777.003573782.263573781.606573957.338573943.346573857.000573797.717573794.632573607.595
157755.780157813.643157820.773157858.434157758.616157815.885157820.070157858.643157909.435157911.524157939.224157909.938157965.810157965.452157954.180157747.549157715.950157710.690157709.638157721.342157748.695157816.025157824.573157867.312157873.098157922.018157925.666157973.902157973.533157953.650157939.290157976.013
1.7001.7202.1501.4003.8302.0002.0801.7001.7852.4502.5501.4001.7001.9401.9802.2751.2410.6001.7652.0502.3551.5501.0500.9770.6251.1000.9003.0002.6502.7203.0003.000
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven06/03/2020
Page 2
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Links
Name USNode
DSNode
Length(m)
ks (mm) /n
US IL(m)
DS IL(m)
Fall(m)
Slope(1:X)
Dia(mm)
T of C(mins)
Rain(mm/hr)
Name Vel(m/s)
Cap(l/s)
Flow(l/s)
USDepth
(m)
DSDepth
(m)
Σ Area(ha)
Σ AddIn ow
(l/s)
ProDepth(mm)
ProVelocity
(m/s)
1.000 6 6.1 57.862 0.600 19.100 16.475 2.625 22.0 225 5.34 50.0
1.000 2.799 111.3 36.3 1.475 1.270 0.268 0.0 88 2.512
1.001 6.1 7 7.280 0.600 16.250 15.975 0.275 26.5 450 5.38 50.0
1.001 3.963 630.3 40.7 1.270 1.700 0.300 0.0 76 2.262
1.002 7 5 37.630 0.600 15.975 14.550 1.425 26.4 450 5.53 50.0
1.002 3.968 631.1 61.4 1.700 0.950 0.453 0.0 94 2.554
1.003 5 4 52.140 0.600 14.550 13.700 0.850 61.3 450 5.87 50.0
1.003 2.599 413.3 103.0 0.950 1.850 0.760 0.0 152 2.175
1.004 4 In 29.597 0.600 13.550 13.450 0.100 296.0 600 8.26 42.9
1.004 1.410 398.7 204.1 1.850 1.950 1.755 0.0 304 1.418
1.005 In 125 22.487 0.600 13.450 13.350 0.100 224.9 600 8.64 41.9
1.005 1.619 457.9 201.2 1.950 1.850 1.772 0.0 278 1.569
1.006 125 126 190.608 0.600 12.800 12.000 0.800 238.3 1200 30.00 0.0
1.006 2.419 2735.8 0.0 1.800 1.800 3.263 0.0 0 0.000
2.000 1 1.1 58.229 0.600 17.160 14.700 2.460 23.7 375 5.26 50.0
2.000 3.737 412.8 35.0 3.455 1.625 0.258 0.0 73 2.308
2.001 1.1 2 5.800 0.600 14.700 14.650 0.050 116.0 375 5.26 50.0
2.001 1.681 185.7 37.5 1.625 1.675 0.277 0.0 114 1.328
2.002 2 2.1 38.749 0.600 14.620 14.250 0.370 104.7 375 5.63 50.0
2.002 1.770 195.5 60.4 1.705 1.325 0.446 0.0 142 1.566
2.003 2.1 3 50.683 0.600 14.250 13.950 0.300 168.9 375 6.33 49.1
2.003 1.391 153.6 62.0 1.325 1.410 0.466 0.0 166 1.320
2.004 3 4 91.284 0.600 13.950 13.550 0.400 228.2 450 7.77 44.3
2.004 1.341 213.3 117.1 1.335 2.000 0.975 0.0 238 1.371
3.000 25.4 25.1 56.030 0.600 14.200 13.955 0.245 228.7 450 5.70 50.0
3.000 1.340 213.1 14.5 0.950 1.250 0.107 0.0 79 0.777
3.001 25.1 25.2 47.708 0.600 13.955 13.835 0.120 397.6 450 6.48 48.5
3.001 1.013 161.1 14.1 1.250 1.490 0.107 0.0 89 0.631
3.002 25.2 25.3 50.949 0.600 13.835 13.690 0.145 351.4 450 7.27 45.9
3.002 1.079 171.5 13.3 1.490 1.530 0.107 0.0 84 0.649
3.003 25.3 125 27.501 0.600 13.690 13.550 0.140 196.4 450 7.73 44.4
3.003 1.447 230.1 12.9 1.530 1.800 0.107 0.0 72 0.794
4.000 110 111 81.952 0.600 20.500 19.954 0.546 150.1 225 5.98 50.0
4.000 1.065 42.3 20.3 2.050 1.016 0.150 0.0 109 1.052
4.001 111 112 22.582 0.600 19.954 19.600 0.354 63.8 225 6.15 49.8
4.001 1.640 65.2 29.3 1.016 0.375 0.217 0.0 106 1.599
4.002 112 113 63.526 0.600 19.600 18.600 1.000 63.5 225 15.16 30.8
4.002 1.643 65.3 26.5 0.375 1.540 0.317 0.0 100 1.560
4.003 113 114 25.936 0.600 18.600 18.450 0.150 172.9 225 15.40 30.5
4.003 0.991 39.4 29.9 1.540 1.825 0.362 0.0 147 1.088
4.004 114 115 29.649 0.600 18.450 18.015 0.435 68.2 300 15.60 30.3
4.004 1.907 134.8 42.0 1.750 1.990 0.512 0.0 115 1.690
4.005 115 116 67.330 0.600 17.950 16.200 1.750 38.5 300 16.28 29.5
4.005 2.542 179.7 42.9 2.055 1.250 0.537 0.0 99 2.098
4.006 116 117 8.943 0.600 16.200 16.150 0.050 178.9 300 16.31 29.5
4.006 1.172 82.9 50.9 1.250 0.750 0.637 0.0 170 1.230
4.007 117 118 42.744 0.600 16.150 16.008 0.142 301.0 300 16.88 28.9
4.007 0.901 63.7 50.9 0.750 0.677 0.650 0.0 204 0.997
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven06/03/2020
Page 3
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Links
Name USNode
DSNode
Length(m)
ks (mm) /n
US IL(m)
DS IL(m)
Fall(m)
Slope(1:X)
Dia(mm)
T of C(mins)
Rain(mm/hr)
Name Vel(m/s)
Cap(l/s)
Flow(l/s)
USDepth
(m)
DSDepth
(m)
Σ Area(ha)
Σ AddIn ow
(l/s)
ProDepth(mm)
ProVelocity
(m/s)
4.008 118 119 7.820 0.600 16.008 15.875 0.133 58.8 300 16.93 28.8
4.008 2.054 145.2 60.8 0.677 0.325 0.779 0.0 135 1.965
4.009 119 120 48.924 0.600 15.875 14.975 0.900 54.4 300 17.31 28.5
4.009 2.137 151.0 69.4 0.325 0.325 0.899 0.0 143 2.093
4.010 120 125 18.802 0.600 14.500 13.700 0.800 23.5 300 17.63 28.2
4.010 3.256 230.2 74.1 0.800 1.800 0.969 0.0 117 2.915
5.000 121 122 50.224 0.600 16.000 14.000 2.000 25.1 500 5.87 50.0
5.000 4.347 853.6 10.8 0.400 2.500 0.080 0.0 39 1.537
5.001 122 123 86.347 0.600 14.000 13.850 0.150 575.6 500 8.67 41.8
5.001 0.898 176.3 26.5 2.500 2.150 0.234 0.0 130 0.654
5.002 123 124 62.528 0.600 13.850 13.630 0.220 284.2 500 9.66 39.6
5.002 1.283 252.0 35.3 2.150 2.220 0.329 0.0 125 0.916
5.003 124 125 17.202 0.600 13.630 12.800 0.830 20.7 500 9.71 39.5
5.003 4.787 939.9 43.3 2.220 2.500 0.404 0.0 72 2.486
Pipeline Schedule
Link Length(m)
Slope(1:X)
Dia(mm)
LinkType
US CL(m)
US IL(m)
US Depth(m)
DS CL(m)
DS IL(m)
DS Depth(m)
Link USNode
Dia(mm)
NodeType
MHType
DSNode
Dia(mm)
NodeType
MHType
1.000 57.862 22.0 225 Circular_Default Sewer Type 20.800 19.100 1.475 17.970 16.475 1.270
1.000 6 1200 Manhole Adoptable 6.1 1350 Manhole Adoptable
1.001 7.280 26.5 450 Circular_Default Sewer Type 17.970 16.250 1.270 18.125 15.975 1.700
1.001 6.1 1350 Manhole Adoptable 7 1350 Manhole Adoptable
1.002 37.630 26.4 450 Circular_Default Sewer Type 18.125 15.975 1.700 15.950 14.550 0.950
1.002 7 1350 Manhole Adoptable 5 1350 Manhole Adoptable
1.003 52.140 61.3 450 Circular_Default Sewer Type 15.950 14.550 0.950 16.000 13.700 1.850
1.003 5 1350 Manhole Adoptable 4 1200 Manhole Adoptable
1.004 29.597 296.0 600 Circular_Default Sewer Type 16.000 13.550 1.850 16.000 13.450 1.950
1.004 4 1200 Manhole Adoptable In 1200 Manhole Adoptable
1.005 22.487 224.9 600 Circular_Default Sewer Type 16.000 13.450 1.950 15.800 13.350 1.850
1.005 In 1200 Manhole Adoptable 125 2100 Manhole Adoptable
1.006 190.608 238.3 1200 Circular_Default Sewer Type 15.800 12.800 1.800 15.000 12.000 1.800
1.006 125 2100 Manhole Adoptable 126 2100 Manhole Adoptable
2.000 58.229 23.7 375 Circular_Default Sewer Type 20.990 17.160 3.455 16.700 14.700 1.625
2.000 1 1350 Manhole Adoptable 1.1 1350 Manhole Adoptable
2.001 5.800 116.0 375 Circular_Default Sewer Type 16.700 14.700 1.625 16.700 14.650 1.675
2.001 1.1 1350 Manhole Adoptable 2 1350 Manhole Adoptable
2.002 38.749 104.7 375 Circular_Default Sewer Type 16.700 14.620 1.705 15.950 14.250 1.325
2.002 2 1350 Manhole Adoptable 2.1 1350 Manhole Adoptable
2.003 50.683 168.9 375 Circular_Default Sewer Type 15.950 14.250 1.325 15.735 13.950 1.410
2.003 2.1 1350 Manhole Adoptable 3 1350 Manhole Adoptable
2.004 91.284 228.2 450 Circular_Default Sewer Type 15.735 13.950 1.335 16.000 13.550 2.000
2.004 3 1350 Manhole Adoptable 4 1200 Manhole Adoptable
3.000 56.030 228.7 450 Circular_Default Sewer Type 15.600 14.200 0.950 15.655 13.955 1.250
3.000 25.4 1350 Manhole Adoptable 25.1 1350 Manhole Adoptable
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven06/03/2020
Page 4
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Pipeline Schedule
Link Length(m)
Slope(1:X)
Dia(mm)
LinkType
US CL(m)
US IL(m)
US Depth(m)
DS CL(m)
DS IL(m)
DS Depth(m)
Link USNode
Dia(mm)
NodeType
MHType
DSNode
Dia(mm)
NodeType
MHType
3.001 47.708 397.6 450 Circular_Default Sewer Type 15.655 13.955 1.250 15.775 13.835 1.490
3.001 25.1 1350 Manhole Adoptable 25.2 1350 Manhole Adoptable
3.002 50.949 351.4 450 Circular_Default Sewer Type 15.775 13.835 1.490 15.670 13.690 1.530
3.002 25.2 1350 Manhole Adoptable 25.3 1200 Manhole Adoptable
3.003 27.501 196.4 450 Circular_Default Sewer Type 15.670 13.690 1.530 15.800 13.550 1.800
3.003 25.3 1200 Manhole Adoptable 125 2100 Manhole Adoptable
4.000 81.952 150.1 225 Circular_Default Sewer Type 22.775 20.500 2.050 21.195 19.954 1.016
4.000 110 1200 Manhole Adoptable 111 1200 Manhole Adoptable
4.001 22.582 63.8 225 Circular_Default Sewer Type 21.195 19.954 1.016 20.200 19.600 0.375
4.001 111 1200 Manhole Adoptable 112 1200 Manhole Adoptable
4.002 63.526 63.5 225 Circular_Default Sewer Type 20.200 19.600 0.375 20.365 18.600 1.540
4.002 112 1200 Manhole Adoptable 113 1200 Manhole Adoptable
4.003 25.936 172.9 225 Circular_Default Sewer Type 20.365 18.600 1.540 20.500 18.450 1.825
4.003 113 1200 Manhole Adoptable 114 1200 Manhole Adoptable
4.004 29.649 68.2 300 Circular_Default Sewer Type 20.500 18.450 1.750 20.305 18.015 1.990
4.004 114 1200 Manhole Adoptable 115 1200 Manhole Adoptable
4.005 67.330 38.5 300 Circular_Default Sewer Type 20.305 17.950 2.055 17.750 16.200 1.250
4.005 115 1200 Manhole Adoptable 116 1200 Manhole Adoptable
4.006 8.943 178.9 300 Circular_Default Sewer Type 17.750 16.200 1.250 17.200 16.150 0.750
4.006 116 1200 Manhole Adoptable 117 1200 Manhole Adoptable
4.007 42.744 301.0 300 Circular_Default Sewer Type 17.200 16.150 0.750 16.985 16.008 0.677
4.007 117 1200 Manhole Adoptable 118 1200 Manhole Adoptable
4.008 7.820 58.8 300 Circular_Default Sewer Type 16.985 16.008 0.677 16.500 15.875 0.325
4.008 118 1200 Manhole Adoptable 119 1200 Manhole Adoptable
4.009 48.924 54.4 300 Circular_Default Sewer Type 16.500 15.875 0.325 15.600 14.975 0.325
4.009 119 1200 Manhole Adoptable 120 1200 Manhole Adoptable
4.010 18.802 23.5 300 Circular_Default Sewer Type 15.600 14.500 0.800 15.800 13.700 1.800
4.010 120 1200 Manhole Adoptable 125 2100 Manhole Adoptable
5.000 50.224 25.1 500 Circular_Default Sewer Type 16.900 16.000 0.400 17.000 14.000 2.500
5.000 121 1500 Manhole Adoptable 122 1500 Manhole Adoptable
5.001 86.347 575.6 500 Circular_Default Sewer Type 17.000 14.000 2.500 16.500 13.850 2.150
5.001 122 1500 Manhole Adoptable 123 1500 Manhole Adoptable
5.002 62.528 284.2 500 Circular_Default Sewer Type 16.500 13.850 2.150 16.350 13.630 2.220
5.002 123 1500 Manhole Adoptable 124 1500 Manhole Adoptable
5.003 17.202 20.7 500 Circular_Default Sewer Type 16.350 13.630 2.220 15.800 12.800 2.500
5.003 124 1500 Manhole Adoptable 125 2100 Manhole Adoptable
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
6
6.1
573814.692
573814.094
157755.780
157813.643
20.800
17.970
1.700
1.720
1200
1350
0
1
0
01
0
1.0001.000
1.001
19.10016.475
16.250
225225
450
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven06/03/2020
Page 5
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
7
5
1
1.1
2
2.1
3
4
In
25.4
25.1
25.2
25.3
573814.029
573809.820
573906.260
573905.771
573901.622
573901.225
573900.598
573809.815
573809.607
573909.011
573908.445
573860.312
573810.729
157820.773
157858.434
157758.616
157815.885
157820.070
157858.643
157909.435
157911.524
157939.224
157909.938
157965.810
157965.452
157954.180
18.125
15.950
20.990
16.700
16.700
15.950
15.735
16.000
16.000
15.600
15.655
15.775
15.670
2.150
1.400
3.830
2.000
2.080
1.700
1.785
2.450
2.550
1.400
1.700
1.940
1.980
1350
1350
1350
1350
1350
1350
1350
1200
1200
1350
1350
1350
1200
1
0
1
0
0
1
0
1
0
1
0
1
0
1
2
0
1
0
0
1
0
10
1
0
1
01
0
01
01
01
01
012
01
0
01
01
01
0
1.001
1.0021.002
1.003
2.0002.000
2.0012.001
2.0022.002
2.0032.003
2.0042.0041.003
1.0041.004
1.005
3.0003.000
3.0013.001
3.0023.002
3.003
15.975
15.97514.550
14.550
17.16014.700
14.70014.650
14.62014.250
14.25013.950
13.95013.55013.700
13.55013.450
13.450
14.20013.955
13.95513.835
13.83513.690
13.690
450
450450
450
375375
375375
375375
375375
450450450
600600
600
450450
450450
450450
450
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven06/03/2020
Page 6
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
110
111
112
113
114
115
116
117
118
119
120
121
122
573975.970
573900.355
573878.394
573814.877
573791.732
573780.291
573780.291
573777.661
573777.003
573782.263
573781.606
573957.338
573943.346
157747.549
157715.950
157710.690
157709.638
157721.342
157748.695
157816.025
157824.573
157867.312
157873.098
157922.018
157925.666
157973.902
22.775
21.195
20.200
20.365
20.500
20.305
17.750
17.200
16.985
16.500
15.600
16.900
17.000
2.275
1.241
0.600
1.765
2.050
2.355
1.550
1.050
0.977
0.625
1.100
0.900
3.000
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1500
1500
0
1
0
10
10
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
1
0
01
01
01
01
01
01
01
01
01
01
0
01
0
4.0004.000
4.0014.001
4.0024.002
4.0034.003
4.0044.004
4.0054.005
4.0064.006
4.0074.007
4.0084.008
4.0094.009
4.010
5.0005.000
5.001
20.50019.954
19.95419.600
19.60018.600
18.60018.450
18.45018.015
17.95016.200
16.20016.150
16.15016.008
16.00815.875
15.87514.975
14.500
16.00014.000
14.000
225225
225225
225225
225225
300300
300300
300300
300300
300300
300300
300
500500
500
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven06/03/2020
Page 7
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
123
124
125
126
573857.000
573797.717
573794.632
573607.595
157973.533
157953.650
157939.290
157976.013
16.500
16.350
15.800
15.000
2.650
2.720
3.000
3.000
1500
1500
2100
2100
10
1
0
1
2
3
40
1
1
01
0123401
5.001
5.0025.002
5.0035.0034.0103.0031.0051.0061.006
13.850
13.85013.630
13.63012.80013.70013.55013.35012.80012.000
500
500500
500500300450600
12001200
Simula on Se ngs
Rainfall MethodologySummer CV
Winter CVAnalysis Speed
FEH-130.7500.840Detailed
Skip Steady StateDrain Down Time (mins)
Addi onal Storage (m³/ha)Check Discharge Rate(s)
x150020.0✓
Check Discharge Volume100 year 360 minute (m³)
✓
Storm Dura ons15 30 60 120 180 240 360 480 600 720 960 1440
Return Period(years)
Climate Change(CC %)
Addi onal Area(A %)
Addi onal Flow(Q %)
230
100100
000
40
0000
0000
Pre-development Discharge Rate
Site MakeupGreen eld Method
Posi vely Drained Area (ha)SAAR (mm)
Soil IndexSPR
RegionGrowth Factor 1 year
Green eldIH124
10.1010.85
Growth Factor 30 yearGrowth Factor 100 year
Be erment (%)QBar
Q 1 year (l/s)Q 30 year (l/s)
Q 100 year (l/s)
1.952.480
Pre-development Discharge Volume
Site MakeupGreen eld Method
Posi vely Drained Area (ha)Soil Index
SPR
Green eldFSR/FEH
10.10
CWIReturn Period (years)
Climate Change (%)Storm Dura on (mins)
Be erment (%)
10003600
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven06/03/2020
Page 8
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Pre-development Discharge Volume
PR Runo Volume (m³)
Other (defaults)
Entry Loss (manhole)Exit Loss (manhole)
0.2500.250
Entry Loss (junc on)Exit Loss (junc on)
0.0000.000
Apply Recommended LossesFlood Risk (m)
x0.300
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven06/03/2020
Page 9
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 2 year Cri cal Storm Dura on. Lowest mass balance: 99.81%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 6 10 19.191 0.091 38.2 0.3911 0.0000 OK
15 minute winter 6 1.000 6.1 37.2 2.505 0.335 0.8601
15 minute winter 6.1 10 16.336 0.086 41.8 0.1542 0.0000 OK
15 minute winter 6.1 1.001 7 41.7 1.849 0.066 0.1642
15 minute winter 7 10 16.070 0.095 63.4 0.2701 0.0000 OK
15 minute winter 7 1.002 5 62.8 1.768 0.100 1.3746
15 minute winter 5 10 14.706 0.156 106.5 0.9090 0.0000 OK
15 minute winter 5 1.003 4 106.0 2.023 0.256 3.1226
15 minute winter 1 10 17.234 0.074 36.7 0.2067 0.0000 OK
15 minute winter 1 2.000 1.1 36.3 1.486 0.088 1.4550
15 minute winter 1.1 11 14.832 0.132 39.0 0.2140 0.0000 OK
15 minute winter 1.1 2.001 2 38.3 1.200 0.206 0.1863
15 minute winter 2 10 14.768 0.148 61.8 0.4528 0.0000 OK
15 minute winter 2 2.002 2.1 61.8 1.423 0.316 1.6958
15 minute winter 2.1 11 14.416 0.166 64.5 0.2774 0.0000 OK
15 minute winter 2.1 2.003 3 64.3 1.031 0.419 3.1538
15 minute winter 3 11 14.198 0.248 132.5 1.7679 0.0000 OK
15 minute winter 3 2.004 4 129.8 1.140 0.609 10.2899
15 minute winter 4 11 13.910 0.360 237.8 0.4660 0.0000 OK
15 minute winter 4 1.004 In 233.1 1.394 0.585 4.9476
15 minute winter In 12 13.781 0.331 235.4 0.4179 0.0000 OK
15 minute winter In 1.005 125 236.4 1.584 0.516 3.3551
15 minute winter 25.4 10 14.280 0.080 15.2 0.2368 0.0000 OK
15 minute winter 25.4 3.000 25.1 14.8 0.733 0.069 1.1735
15 minute winter 25.1 11 14.047 0.092 14.8 0.1318 0.0000 OK
15 minute winter 25.1 3.001 25.2 14.3 0.655 0.089 1.0624
15 minute winter 25.2 12 13.923 0.088 14.3 0.1253 0.0000 OK
15 minute winter 25.2 3.002 25.3 13.8 0.739 0.081 0.9840
15 minute winter 25.3 13 13.765 0.075 13.8 0.0843 0.0000 OK
15 minute winter 25.3 3.003 125 13.3 0.795 0.058 0.4608
30 minute winter 110 31 20.562 0.062 7.0 0.1527 0.0000 OK
30 minute winter 110 4.000 111 7.0 0.808 0.165 0.7098
30 minute winter 111 32 20.014 0.060 10.1 0.1316 0.0000 OK
30 minute winter 111 4.001 112 10.1 1.044 0.155 0.2187
30 minute winter 112 31 19.672 0.072 14.8 0.3227 0.0000 OK
30 minute winter 112 4.002 113 14.8 1.007 0.226 0.9354
30 minute winter 113 32 18.706 0.106 16.9 0.1746 0.0000 OK
30 minute winter 113 4.003 114 16.8 1.029 0.427 0.4249
30 minute winter 114 32 18.538 0.088 23.8 0.2273 0.0000 OK
30 minute winter 114 4.004 115 23.8 1.425 0.176 0.4947
30 minute winter 115 32 18.025 0.075 25.0 0.1007 0.0000 OK
30 minute winter 115 4.005 116 25.0 1.077 0.139 1.5828
30 minute winter 116 32 16.344 0.144 29.6 0.3474 0.0000 OK
30 minute winter 116 4.006 117 29.6 0.875 0.357 0.3022
30 minute winter 117 32 16.297 0.147 30.2 0.2027 0.0000 OK
30 minute winter 117 4.007 118 30.1 1.019 0.473 1.2656
30 minute winter 118 33 16.123 0.115 36.0 0.4349 0.0000 OK
30 minute winter 118 4.008 119 36.0 1.495 0.248 0.1886
30 minute winter 119 32 15.985 0.110 41.5 0.5454 0.0000 OK
30 minute winter 119 4.009 120 41.5 1.816 0.275 1.1176
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven06/03/2020
Page 10
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 2 year Cri cal Storm Dura on. Lowest mass balance: 99.81%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
30 minute winter 120 33 14.595 0.095 44.7 0.2274 0.0000 OK
30 minute winter 120 4.010 125 44.7 2.452 0.194 0.3429
30 minute winter 121 32 16.024 0.024 3.7 0.0846 0.0000 OK
30 minute winter 121 5.000 122 3.7 0.338 0.004 0.6118
30 minute winter 122 32 14.082 0.082 10.9 0.2302 0.0000 OK
30 minute winter 122 5.001 123 10.8 0.493 0.061 1.8979
30 minute winter 123 32 13.938 0.088 15.2 0.2175 0.0000 OK
30 minute winter 123 5.002 124 15.2 0.956 0.060 1.0175
30 minute winter 124 32 13.678 0.048 18.7 0.1120 0.0000 OK
30 minute winter 124 5.003 125 18.6 0.754 0.020 0.8353
15 minute winter 125 13 13.053 0.253 275.3 0.8936 0.0000 OK
15 minute winter 125 1.006 126 274.7 1.619 0.100 32.3443 214.0
15 minute winter 126 13 12.247 0.247 274.7 0.0000 0.0000 OK
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven06/03/2020
Page 11
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 30 year Cri cal Storm Dura on. Lowest mass balance: 99.81%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 6 10 19.270 0.170 99.4 0.7275 0.0000 OK
15 minute winter 6 1.000 6.1 97.0 3.107 0.872 1.8107
15 minute winter 6.1 10 16.400 0.150 108.9 0.2707 0.0000 OK
15 minute winter 6.1 1.001 7 108.6 2.308 0.172 0.3433
15 minute winter 7 10 16.129 0.154 165.3 0.4405 0.0000 OK
15 minute winter 7 1.002 5 164.2 2.207 0.260 2.9186
15 minute winter 5 11 14.839 0.289 278.1 1.6831 0.0000 OK
15 minute winter 5 1.003 4 268.8 2.099 0.650 6.9384
15 minute winter 1 10 17.281 0.121 95.7 0.3359 0.0000 OK
15 minute winter 1 2.000 1.1 94.9 1.725 0.230 4.1039
15 minute winter 1.1 12 15.686 0.986 101.9 1.5979 0.0000 SURCHARGED
15 minute winter 1.1 2.001 2 87.9 1.208 0.473 0.6397
15 minute winter 2 12 15.663 1.043 145.0 3.1872 0.0000 SURCHARGED
15 minute winter 2 2.002 2.1 142.4 1.635 0.728 4.2739
15 minute winter 2.1 12 15.465 1.215 149.4 2.0247 0.0000 SURCHARGED
15 minute winter 2.1 2.003 3 145.2 1.317 0.945 5.5902
15 minute winter 3 12 15.190 1.240 292.7 8.8432 0.0000 SURCHARGED
15 minute winter 3 2.004 4 285.5 1.802 1.338 14.4634
15 minute winter 4 11 14.381 0.831 547.3 1.0759 0.0000 SURCHARGED
15 minute winter 4 1.004 In 545.6 1.937 1.369 8.3368
15 minute winter In 12 14.103 0.653 550.5 0.8260 0.0000 SURCHARGED
15 minute winter In 1.005 125 552.3 1.999 1.206 5.9116
15 minute winter 25.4 10 14.331 0.131 39.7 0.3886 0.0000 OK
15 minute winter 25.4 3.000 25.1 39.0 0.934 0.183 2.3773
15 minute winter 25.1 11 14.109 0.154 39.0 0.2200 0.0000 OK
15 minute winter 25.1 3.001 25.2 38.6 0.850 0.239 2.1659
15 minute winter 25.2 12 13.981 0.146 38.6 0.2086 0.0000 OK
15 minute winter 25.2 3.002 25.3 38.0 0.947 0.221 2.0513
15 minute winter 25.3 13 13.816 0.126 38.0 0.1426 0.0000 OK
15 minute winter 25.3 3.003 125 37.2 1.058 0.162 0.9663
30 minute winter 110 30 20.605 0.105 18.5 0.2565 0.0000 OK
30 minute winter 110 4.000 111 18.5 1.034 0.436 1.4621
30 minute winter 111 31 20.057 0.103 26.7 0.2268 0.0000 OK
30 minute winter 111 4.001 112 26.7 1.333 0.409 0.4523
30 minute winter 112 31 19.724 0.124 39.0 0.5542 0.0000 OK
30 minute winter 112 4.002 113 39.0 1.227 0.596 1.9763
30 minute winter 113 32 18.845 0.245 44.5 0.4018 0.0000 SURCHARGED
30 minute winter 113 4.003 114 44.2 1.281 1.123 0.8842
30 minute winter 114 32 18.601 0.151 62.4 0.3927 0.0000 OK
30 minute winter 114 4.004 115 62.4 1.824 0.463 1.0144
30 minute winter 115 32 18.074 0.124 65.4 0.1665 0.0000 OK
30 minute winter 115 4.005 116 65.4 1.231 0.364 3.2956
30 minute winter 116 33 16.554 0.354 77.5 0.8577 0.0000 SURCHARGED
30 minute winter 116 4.006 117 77.3 1.097 0.933 0.6298
30 minute winter 117 33 16.479 0.329 78.9 0.4531 0.0000 SURCHARGED
30 minute winter 117 4.007 118 78.9 1.178 1.239 2.6774
30 minute winter 118 33 16.226 0.218 94.3 0.8225 0.0000 OK
30 minute winter 118 4.008 119 94.3 1.811 0.649 0.4070
30 minute winter 119 33 16.073 0.198 108.7 0.9825 0.0000 OK
30 minute winter 119 4.009 120 108.7 2.285 0.720 2.3279
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven06/03/2020
Page 12
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 30 year Cri cal Storm Dura on. Lowest mass balance: 99.81%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
30 minute winter 120 33 14.668 0.168 117.1 0.4042 0.0000 OK
30 minute winter 120 4.010 125 117.2 3.088 0.509 0.7134
30 minute winter 121 30 16.038 0.038 9.9 0.1331 0.0000 OK
30 minute winter 121 5.000 122 9.9 0.441 0.012 1.2335
30 minute winter 122 31 14.135 0.135 28.9 0.3770 0.0000 OK
30 minute winter 122 5.001 123 28.7 0.656 0.163 3.7816
30 minute winter 123 32 13.991 0.141 40.4 0.3497 0.0000 OK
30 minute winter 123 5.002 124 40.3 1.286 0.160 2.0036
30 minute winter 124 32 13.707 0.077 49.4 0.1781 0.0000 OK
30 minute winter 124 5.003 125 49.4 1.045 0.053 1.5046
15 minute winter 125 12 13.209 0.409 680.4 1.4469 0.0000 OK
15 minute winter 125 1.006 126 680.5 2.086 0.249 62.4761 557.9
15 minute winter 126 13 12.392 0.392 680.5 0.0000 0.0000 OK
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven06/03/2020
Page 13
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year Cri cal Storm Dura on. Lowest mass balance: 99.81%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 6 11 19.536 0.436 127.9 1.8660 0.0000 SURCHARGED
15 minute winter 6 1.000 6.1 114.0 3.045 1.025 2.3011
15 minute summer 6.1 10 16.418 0.168 130.9 0.3037 0.0000 OK
15 minute summer 6.1 1.001 7 131.0 2.393 0.208 0.3985
15 minute summer 7 10 16.146 0.171 200.5 0.4890 0.0000 OK
15 minute summer 7 1.002 5 200.0 2.215 0.317 3.9665
15 minute winter 5 11 15.241 0.691 339.2 4.0219 0.0000 SURCHARGED
15 minute winter 5 1.003 4 314.8 2.100 0.762 8.2612
15 minute winter 1 10 17.298 0.138 123.1 0.3837 0.0000 OK
15 minute winter 1 2.000 1.1 122.2 1.777 0.296 4.2821
15 minute winter 1.1 12 16.394 1.694 131.3 2.7456 0.0000 SURCHARGED
15 minute winter 1.1 2.001 2 116.4 1.211 0.627 0.6397
15 minute winter 2 12 16.346 1.726 179.4 5.2747 0.0000 SURCHARGED
15 minute winter 2 2.002 2.1 183.9 1.667 0.941 4.2739
15 minute winter 2.1 11 15.950 1.700 191.4 2.8339 7.3329 FLOOD
15 minute winter 2.1 2.003 3 162.0 1.469 1.054 5.5902
15 minute winter 3 11 15.735 1.785 356.6 12.7342 0.9778 FLOOD
15 minute winter 3 2.004 4 333.2 2.103 1.562 14.4634
15 minute winter 4 11 14.640 1.090 653.0 1.4104 0.0000 SURCHARGED
15 minute winter 4 1.004 In 652.8 2.318 1.638 8.3368
15 minute winter In 11 14.235 0.785 659.9 0.9927 0.0000 SURCHARGED
15 minute winter In 1.005 125 660.5 2.351 1.442 6.0992
15 minute winter 25.4 10 14.350 0.150 51.1 0.4455 0.0000 OK
15 minute winter 25.4 3.000 25.1 50.3 0.992 0.236 2.8687
15 minute winter 25.1 11 14.132 0.177 50.3 0.2529 0.0000 OK
15 minute winter 25.1 3.001 25.2 49.8 0.906 0.309 2.6253
15 minute winter 25.2 12 14.002 0.167 49.8 0.2392 0.0000 OK
15 minute winter 25.2 3.002 25.3 49.1 1.008 0.286 2.4907
15 minute winter 25.3 12 13.835 0.145 49.1 0.1643 0.0000 OK
15 minute winter 25.3 3.003 125 47.9 1.134 0.208 1.1646
30 minute winter 110 30 20.622 0.122 24.0 0.2994 0.0000 OK
30 minute winter 110 4.000 111 24.0 1.095 0.566 1.7923
30 minute winter 111 31 20.075 0.121 34.7 0.2674 0.0000 OK
30 minute winter 111 4.001 112 34.7 1.405 0.531 0.5564
30 minute winter 112 31 19.747 0.147 50.7 0.6576 0.0000 OK
30 minute winter 112 4.002 113 50.6 1.369 0.775 2.1380
30 minute winter 113 32 19.004 0.404 57.8 0.6630 0.0000 SURCHARGED
30 minute winter 113 4.003 114 57.6 1.478 1.463 0.9564
30 minute winter 114 32 18.630 0.180 81.4 0.4658 0.0000 OK
30 minute winter 114 4.004 115 81.4 1.937 0.604 1.2462
30 minute winter 115 32 18.094 0.144 85.3 0.1935 0.0000 OK
30 minute winter 115 4.005 116 85.3 1.429 0.475 3.4968
60 minute winter 116 48 16.836 0.636 101.1 1.5393 0.0000 SURCHARGED
60 minute winter 116 4.006 117 100.6 1.429 1.214 0.6298
60 minute winter 117 48 16.707 0.557 102.6 0.7685 0.0000 SURCHARGED
60 minute winter 117 4.007 118 102.6 1.457 1.611 2.9774
60 minute winter 118 48 16.291 0.283 122.9 1.0681 0.0000 OK
60 minute winter 118 4.008 119 122.8 1.865 0.846 0.5128
60 minute winter 119 48 16.123 0.248 141.6 1.2321 0.0000 OK
60 minute winter 119 4.009 120 141.5 2.369 0.937 2.9205
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven06/03/2020
Page 14
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year Cri cal Storm Dura on. Lowest mass balance: 99.81%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
60 minute winter 120 48 14.703 0.203 152.5 0.4875 0.0000 OK
60 minute winter 120 4.010 125 152.5 3.250 0.663 0.8817
30 minute winter 121 31 16.042 0.042 12.8 0.1502 0.0000 OK
30 minute winter 121 5.000 122 12.8 0.471 0.015 1.4989
30 minute winter 122 31 14.155 0.155 37.5 0.4342 0.0000 OK
30 minute winter 122 5.001 123 37.3 0.705 0.212 4.5742
30 minute winter 123 32 14.011 0.161 52.5 0.3990 0.0000 OK
30 minute winter 123 5.002 124 52.4 1.389 0.208 2.4093
30 minute winter 124 32 13.717 0.087 64.3 0.2025 0.0000 OK
30 minute winter 124 5.003 125 64.3 1.135 0.068 1.7209
15 minute winter 125 12 13.257 0.457 830.1 1.6153 0.0000 OK
15 minute winter 125 1.006 126 832.3 2.198 0.304 72.3657 710.1
15 minute winter 126 13 12.435 0.435 832.3 0.0000 0.0000 OK
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven06/03/2020
Page 15
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year +40% CC Cri cal Storm Dura on. Lowest mass balance: 99.81%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 6 11 20.800 1.700 179.1 7.2828 2.3965 FLOOD
15 minute winter 6 1.000 6.1 134.2 3.375 1.206 2.3001
15 minute winter 6.1 11 16.446 0.196 154.3 0.3535 0.0000 OK
15 minute winter 6.1 1.001 7 154.3 2.519 0.245 0.6183
15 minute winter 7 11 16.255 0.280 252.3 0.7988 0.0000 OK
15 minute winter 7 1.002 5 249.8 2.172 0.396 4.9300
15 minute winter 5 11 15.950 1.400 444.8 8.1438 1.1335 FLOOD
15 minute winter 5 1.003 4 424.0 2.676 1.026 8.2612
15 minute winter 1 10 17.377 0.217 172.4 0.6017 0.0000 OK
15 minute winter 1 2.000 1.1 166.9 1.799 0.404 5.1296
15 minute winter 1.1 10 16.700 2.000 179.6 3.2420 6.1670 FLOOD
15 minute winter 1.1 2.001 2 147.7 1.340 0.796 0.6397
15 minute winter 2 10 16.638 2.018 239.4 6.1682 0.0000 FLOOD RISK
15 minute winter 2 2.002 2.1 239.9 2.175 1.227 4.2739
15 minute winter 2.1 9 15.950 1.700 253.3 2.8339 33.4617 FLOOD
15 minute winter 2.1 2.003 3 162.6 1.475 1.059 5.5902
15 minute winter 3 9 15.735 1.785 459.5 12.7342 29.3346 FLOOD
15 minute winter 3 2.004 4 326.1 2.059 1.529 14.4634
15 minute winter 4 11 14.855 1.305 735.0 1.6881 0.0000 SURCHARGED
15 minute winter 4 1.004 In 735.1 2.610 1.844 8.3368
15 minute winter In 11 14.346 0.896 745.8 1.1322 0.0000 SURCHARGED
15 minute winter In 1.005 125 745.9 2.650 1.629 6.1882
15 minute winter 25.4 10 14.382 0.182 71.5 0.5376 0.0000 OK
15 minute winter 25.4 3.000 25.1 70.5 1.074 0.331 3.6962
15 minute winter 25.1 11 14.169 0.214 70.5 0.3067 0.0000 OK
15 minute winter 25.1 3.001 25.2 69.9 0.982 0.434 3.3986
15 minute winter 25.2 12 14.037 0.202 69.9 0.2887 0.0000 OK
15 minute winter 25.2 3.002 25.3 68.9 1.093 0.402 3.2207
15 minute winter 25.3 12 13.866 0.176 68.9 0.1996 0.0000 OK
15 minute winter 25.3 3.003 125 67.8 1.240 0.295 1.5112
60 minute winter 110 50 20.768 0.268 33.4 0.6576 0.0000 SURCHARGED
60 minute winter 110 4.000 111 33.1 1.160 0.781 3.2593
60 minute winter 111 50 20.424 0.470 47.9 1.0391 0.0000 SURCHARGED
60 minute winter 111 4.001 112 46.5 1.418 0.713 0.8981
60 minute winter 112 44 20.200 0.600 68.6 2.6784 4.0610 FLOOD
60 minute winter 112 4.002 113 61.9 1.556 0.947 2.5265
30 minute winter 113 31 19.229 0.629 70.9 1.0322 0.0000 SURCHARGED
30 minute winter 113 4.003 114 70.9 1.784 1.800 1.0235
30 minute winter 114 30 18.665 0.215 104.6 0.5587 0.0000 OK
30 minute winter 114 4.004 115 104.5 2.031 0.775 1.5243
30 minute winter 115 31 18.159 0.209 110.1 0.2809 0.0000 OK
30 minute winter 115 4.005 116 110.1 1.651 0.613 4.1361
30 minute winter 116 31 17.423 1.223 132.4 2.9599 0.0000 SURCHARGED
30 minute winter 116 4.006 117 132.4 1.880 1.598 0.6298
60 minute winter 117 41 17.200 1.050 135.0 1.4480 18.9254 FLOOD
60 minute winter 117 4.007 118 118.0 1.676 1.854 3.0100
30 minute winter 118 31 16.702 0.694 142.6 2.6180 0.0000 FLOOD RISK
30 minute winter 118 4.008 119 139.7 1.985 0.963 0.5507
30 minute winter 119 31 16.476 0.601 165.8 2.9883 0.0000 FLOOD RISK
30 minute winter 119 4.009 120 165.5 2.373 1.096 3.4346
Idom Merebrook Ltd File: NETWORK 1.PFDNetwork: Exis ng Ground/Roof WaterSam Raven06/03/2020
Page 16
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year +40% CC Cri cal Storm Dura on. Lowest mass balance: 99.81%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
30 minute winter 120 30 14.734 0.234 181.2 0.5634 0.0000 OK
30 minute winter 120 4.010 125 181.1 3.332 0.787 1.0193
30 minute winter 121 30 16.050 0.050 18.0 0.1761 0.0000 OK
30 minute winter 121 5.000 122 18.0 0.510 0.021 1.9298
30 minute winter 122 31 14.187 0.187 52.6 0.5231 0.0000 OK
30 minute winter 122 5.001 123 52.3 0.774 0.297 5.8437
30 minute winter 123 32 14.041 0.191 73.5 0.4737 0.0000 OK
30 minute winter 123 5.002 124 73.4 1.535 0.291 3.0480
30 minute winter 124 32 13.733 0.103 90.1 0.2387 0.0000 OK
30 minute winter 124 5.003 125 90.1 1.329 0.096 1.8891
15 minute winter 125 12 13.301 0.501 983.4 1.7715 0.0000 OK
15 minute winter 125 1.006 126 987.7 2.294 0.361 82.1917 935.7
15 minute winter 126 13 12.477 0.477 987.7 0.0000 0.0000 OK
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven06/03/2020
Page 1
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Design Se ngs
Rainfall MethodologyReturn Period (years)
Addi onal Flow (%)FSR Region
M5-60 (mm)Ra o-R
CVTime of Entry (mins)
FSR10England and Wales20.0000.4000.7505.00
Maximum Time of Concentra on (mins)Maximum Rainfall (mm/hr)
Minimum Velocity (m/s)Connec on Type
Minimum Backdrop Height (m)Preferred Cover Depth (m)
Include Intermediate GroundEnforce best prac ce design rules
30.0050.01.00Level So ts5.0001.200✓✓
Nodes
Name Area(ha)
T of E(mins)
CoverLevel(m)
Diameter(mm)
Eas ng(m)
Northing(m)
Depth(m)
8.189.191011.111121513232424.11718.118192021221001011021031042.32.42523.423.323.2Pump inPond
0.1490.3340.0720.1470.1650.1100.2270.1010.1720.2270.1220.025
0.0570.1340.1280.1650.0920.0660.0160.0740.3270.1170.3840.0090.0610.0370.0020.0060.0070.0030.179
5.005.005.005.005.005.005.005.005.005.005.005.00
5.005.005.005.005.005.005.00
20.0020.0020.0020.0020.00
5.005.005.005.005.005.005.00
22.77521.19520.50020.36520.30517.75016.98515.60015.85015.70015.70015.72015.67023.80021.96420.50021.18020.27018.01016.00020.00020.00020.00018.00017.00015.76015.72515.69015.70015.81116.00016.00016.295
120012001200120012001200120012001200120012001200120012001200120012001200120012001200120012001200120012001200120012001200120012001200
573964.128573903.757573783.104573815.762573793.734573793.282573792.915573792.104573813.784573848.269573883.275573906.698573907.143573985.663573931.297573922.846573963.016573955.216573922.279573907.699574013.128573996.117573987.190573975.229573966.416573955.983573907.143573907.143573911.410573911.521573927.811573941.443573941.705
157747.966157722.740157724.594157724.594157768.618157812.850157841.173157921.291157921.407157959.993157963.079157963.318157922.805157763.323157745.584157762.521157782.339157805.877157824.029157850.640157771.795157783.189157824.817157833.208157871.639157869.600157862.434157912.610157912.581157920.740157921.131157925.902157942.505
1.1251.4201.7101.8352.4151.6402.2201.5002.1501.2751.4201.6602.1701.6000.9401.4601.5801.0701.5802.2850.8001.2572.8241.4332.0701.3502.0402.3152.3502.5102.9503.0003.509
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven06/03/2020
Page 2
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Links
Name USNode
DSNode
Length(m)
ks (mm) /n
US IL(m)
DS IL(m)
Fall(m)
Slope(1:X)
Dia(mm)
T of C(mins)
Rain(mm/hr)
Name Vel(m/s)
Cap(l/s)
Flow(l/s)
USDepth
(m)
DSDepth
(m)
Σ Area(ha)
Σ AddIn ow
(l/s)
1.000 8.1 8 70.922 0.600 21.650 19.925 1.725 41.1 225 6.18 49.7
1.000 2.046 81.3 20.1 0.900 1.045 0.149 0.0
1.001 8 9 83.073 0.600 19.775 18.530 1.245 66.7 375 7.57 44.9
1.001 2.221 245.3 58.8 1.045 1.460 0.483 0.0
1.002 9 10 49.107 0.600 18.530 17.890 0.640 76.7 375 8.38 42.6
1.002 2.070 228.6 81.1 1.460 2.040 0.702 0.0
1.003 10 11.1 44.319 0.600 17.890 16.110 1.780 24.9 375 9.12 40.7
1.003 3.644 402.4 95.6 2.040 1.265 0.867 0.0
1.004 11.1 11 28.408 0.600 16.110 14.790 1.320 21.5 375 9.60 39.7
1.004 3.920 432.9 105.1 1.265 1.820 0.977 0.0
1.005 11 12 80.223 0.600 14.765 14.100 0.665 120.6 450 10.93 37.0
1.005 1.850 294.2 120.7 1.770 1.050 1.204 0.0
1.006 12 15 21.830 0.600 14.100 13.850 0.250 87.3 450 11.30 36.4
1.006 2.176 346.1 128.8 1.050 1.550 1.305 0.0
1.007 15 24.1 93.313 0.600 13.700 13.500 0.200 466.6 600 12.85 33.9
1.007 1.120 316.8 135.7 1.550 1.570 1.477 0.0
1.008 24.1 25 10.133 0.600 13.500 13.375 0.125 81.1 600 13.02 33.6
1.008 2.706 765.1 168.6 1.570 1.715 1.851 0.0
1.009 25 23.4 4.162 0.600 13.375 13.350 0.025 166.5 600 13.09 33.5
1.009 1.884 532.8 319.6 1.715 1.750 3.520 0.0
1.010 23.4 23.3 8.118 0.600 13.350 13.301 0.049 165.7 600 13.22 33.3
1.010 1.889 534.1 318.3 1.750 1.910 3.526 0.0
1.011 23.3 23.2 16.439 0.600 13.301 13.050 0.251 65.5 600 13.50 32.9
1.011 3.012 851.6 315.1 1.910 2.350 3.533 0.0
1.012 23.2 Pump in 14.306 0.600 13.050 13.000 0.050 286.1 600 13.74 32.6
1.012 1.434 405.5 312.4 2.350 2.400 3.536 0.0
1.013 Pump in Pond 21.362 0.600 13.000 12.786 0.214 99.8 600 14.09 32.1
1.013 2.437 689.1 323.2 2.400 2.909 3.715 0.0
2.000 9.1 9 32.602 0.600 18.790 18.680 0.110 296.4 225 5.25 50.0
2.000 0.754 30.0 9.8 1.485 1.460 0.072 0.0
3.000 19 20 24.797 0.600 19.600 19.200 0.400 62.0 225 5.25 50.0
3.000 1.664 66.1 22.4 1.355 0.845 0.165 0.0
3.001 20 21 37.617 0.600 19.200 16.655 2.545 14.8 225 5.42 50.0
3.001 3.421 136.0 34.8 0.845 1.130 0.257 0.0
3.002 21 22 62.205 0.600 16.430 13.715 2.715 22.9 450 6.04 50.0
3.002 4.261 677.7 87.0 1.130 1.835 0.642 0.0
3.003 22 2.4 11.984 0.600 13.715 13.685 0.030 399.5 450 6.06 50.0
3.003 1.011 160.8 89.2 1.835 1.590 0.658 0.0
3.004 2.4 25 50.399 0.600 13.685 13.375 0.310 162.6 450 8.53 42.2
3.004 1.591 253.1 190.7 1.590 1.865 1.667 0.0
4.000 18.1 18 18.749 0.600 21.024 19.115 1.909 9.8 150 5.17 50.0
4.000 3.233 57.1 18.2 0.790 1.235 0.134 0.0
4.001 18 21 61.420 0.600 19.040 16.655 2.385 25.8 225 6.36 49.0
4.001 2.588 102.9 42.4 1.235 1.130 0.319 0.0
5.000 100 101 10.967 0.600 19.200 18.743 0.457 24.0 150 5.41 50.0
5.000 2.064 36.5 10.0 0.650 1.107 0.074 0.0
5.001 101 102 37.617 0.600 18.743 17.176 1.567 24.0 150 5.80 50.0
5.001 2.064 36.5 54.3 1.107 2.674 0.401 0.0
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven06/03/2020
Page 3
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Links
Name USNode
DSNode
Length(m)
ks (mm) /n
US IL(m)
DS IL(m)
Fall(m)
Slope(1:X)
Dia(mm)
T of C(mins)
Rain(mm/hr)
Name Vel(m/s)
Cap(l/s)
Flow(l/s)
USDepth
(m)
DSDepth
(m)
Σ Area(ha)
Σ AddIn ow
(l/s)
5.002 102 103 14.611 0.600 17.176 16.567 0.609 24.0 150 6.04 50.0
5.002 2.064 36.5 70.2 2.674 1.283 0.518 0.0
5.003 103 104 39.286 0.600 16.567 14.930 1.637 24.0 150 6.68 47.8
5.003 2.064 36.5 116.9 1.283 1.920 0.902 0.0
5.004 104 2.3 10.967 0.600 14.930 14.410 0.520 21.1 150 6.86 47.2
5.004 2.202 38.9 116.5 1.920 1.200 0.911 0.0
5.005 2.3 2.4 49.402 0.600 14.410 13.685 0.725 68.1 375 7.68 44.6
5.005 2.197 242.7 117.5 0.975 1.665 0.972 0.0
6.000 13 23 35.064 0.600 14.425 14.280 0.145 241.8 225 5.58 50.0
6.000 0.836 33.2 30.8 1.050 1.195 0.227 0.0
6.001 23 24 23.486 0.600 14.280 14.135 0.145 162.0 225 5.98 50.0
6.001 1.024 40.7 47.3 1.195 1.360 0.349 0.0
6.002 24 24.1 40.607 0.600 14.060 13.800 0.260 156.2 300 6.65 47.9
6.002 1.255 88.7 48.6 1.360 1.570 0.374 0.0
7.000 17 18 20.213 0.600 22.200 19.115 3.085 6.6 225 5.34 50.0
7.000 5.144 204.5 7.7 1.375 1.160 0.057 0.0
Pipeline Schedule
Link Length(m)
Slope(1:X)
Dia(mm)
LinkType
US CL(m)
US IL(m)
US Depth(m)
DS CL(m)
DS IL(m)
DS Depth(m)
Link USNode
Dia(mm)
NodeType
MHType
DSNode
Dia(mm)
NodeType
MHType
1.000 70.922 41.1 225 Circular_Default Sewer Type 22.775 21.650 0.900 21.195 19.925 1.045
1.000 8.1 1200 Manhole Adoptable 8 1200 Manhole Adoptable
1.001 83.073 66.7 375 Circular_Default Sewer Type 21.195 19.775 1.045 20.365 18.530 1.460
1.001 8 1200 Manhole Adoptable 9 1200 Manhole Adoptable
1.002 49.107 76.7 375 Circular_Default Sewer Type 20.365 18.530 1.460 20.305 17.890 2.040
1.002 9 1200 Manhole Adoptable 10 1200 Manhole Adoptable
1.003 44.319 24.9 375 Circular_Default Sewer Type 20.305 17.890 2.040 17.750 16.110 1.265
1.003 10 1200 Manhole Adoptable 11.1 1200 Manhole Adoptable
1.004 28.408 21.5 375 Circular_Default Sewer Type 17.750 16.110 1.265 16.985 14.790 1.820
1.004 11.1 1200 Manhole Adoptable 11 1200 Manhole Adoptable
1.005 80.223 120.6 450 Circular_Default Sewer Type 16.985 14.765 1.770 15.600 14.100 1.050
1.005 11 1200 Manhole Adoptable 12 1200 Manhole Adoptable
1.006 21.830 87.3 450 Circular_Default Sewer Type 15.600 14.100 1.050 15.850 13.850 1.550
1.006 12 1200 Manhole Adoptable 15 1200 Manhole Adoptable
1.007 93.313 466.6 600 Circular_Default Sewer Type 15.850 13.700 1.550 15.670 13.500 1.570
1.007 15 1200 Manhole Adoptable 24.1 1200 Manhole Adoptable
1.008 10.133 81.1 600 Circular_Default Sewer Type 15.670 13.500 1.570 15.690 13.375 1.715
1.008 24.1 1200 Manhole Adoptable 25 1200 Manhole Adoptable
1.009 4.162 166.5 600 Circular_Default Sewer Type 15.690 13.375 1.715 15.700 13.350 1.750
1.009 25 1200 Manhole Adoptable 23.4 1200 Manhole Adoptable
1.010 8.118 165.7 600 Circular_Default Sewer Type 15.700 13.350 1.750 15.811 13.301 1.910
1.010 23.4 1200 Manhole Adoptable 23.3 1200 Manhole Adoptable
1.011 16.439 65.5 600 Circular_Default Sewer Type 15.811 13.301 1.910 16.000 13.050 2.350
1.011 23.3 1200 Manhole Adoptable 23.2 1200 Manhole Adoptable
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven06/03/2020
Page 4
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Pipeline Schedule
Link Length(m)
Slope(1:X)
Dia(mm)
LinkType
US CL(m)
US IL(m)
US Depth(m)
DS CL(m)
DS IL(m)
DS Depth(m)
Link USNode
Dia(mm)
NodeType
MHType
DSNode
Dia(mm)
NodeType
MHType
1.012 14.306 286.1 600 Circular_Default Sewer Type 16.000 13.050 2.350 16.000 13.000 2.400
1.012 23.2 1200 Manhole Adoptable Pump in 1200 Manhole Adoptable
1.013 21.362 99.8 600 Circular_Default Sewer Type 16.000 13.000 2.400 16.295 12.786 2.909
1.013 Pump in 1200 Manhole Adoptable Pond 1200 Manhole Adoptable
2.000 32.602 296.4 225 Circular_Default Sewer Type 20.500 18.790 1.485 20.365 18.680 1.460
2.000 9.1 1200 Manhole Adoptable 9 1200 Manhole Adoptable
3.000 24.797 62.0 225 Circular_Default Sewer Type 21.180 19.600 1.355 20.270 19.200 0.845
3.000 19 1200 Manhole Adoptable 20 1200 Manhole Adoptable
3.001 37.617 14.8 225 Circular_Default Sewer Type 20.270 19.200 0.845 18.010 16.655 1.130
3.001 20 1200 Manhole Adoptable 21 1200 Manhole Adoptable
3.002 62.205 22.9 450 Circular_Default Sewer Type 18.010 16.430 1.130 16.000 13.715 1.835
3.002 21 1200 Manhole Adoptable 22 1200 Manhole Adoptable
3.003 11.984 399.5 450 Circular_Default Sewer Type 16.000 13.715 1.835 15.725 13.685 1.590
3.003 22 1200 Manhole Adoptable 2.4 1200 Manhole Adoptable
3.004 50.399 162.6 450 Circular_Default Sewer Type 15.725 13.685 1.590 15.690 13.375 1.865
3.004 2.4 1200 Manhole Adoptable 25 1200 Manhole Adoptable
4.000 18.749 9.8 150 Circular_Default Sewer Type 21.964 21.024 0.790 20.500 19.115 1.235
4.000 18.1 1200 Manhole Adoptable 18 1200 Manhole Adoptable
4.001 61.420 25.8 225 Circular_Default Sewer Type 20.500 19.040 1.235 18.010 16.655 1.130
4.001 18 1200 Manhole Adoptable 21 1200 Manhole Adoptable
5.000 10.967 24.0 150 Circular_Default Sewer Type 20.000 19.200 0.650 20.000 18.743 1.107
5.000 100 1200 Manhole Adoptable 101 1200 Manhole Adoptable
5.001 37.617 24.0 150 Circular_Default Sewer Type 20.000 18.743 1.107 20.000 17.176 2.674
5.001 101 1200 Manhole Adoptable 102 1200 Manhole Adoptable
5.002 14.611 24.0 150 Circular_Default Sewer Type 20.000 17.176 2.674 18.000 16.567 1.283
5.002 102 1200 Manhole Adoptable 103 1200 Manhole Adoptable
5.003 39.286 24.0 150 Circular_Default Sewer Type 18.000 16.567 1.283 17.000 14.930 1.920
5.003 103 1200 Manhole Adoptable 104 1200 Manhole Adoptable
5.004 10.967 21.1 150 Circular_Default Sewer Type 17.000 14.930 1.920 15.760 14.410 1.200
5.004 104 1200 Manhole Adoptable 2.3 1200 Manhole Adoptable
5.005 49.402 68.1 375 Circular_Default Sewer Type 15.760 14.410 0.975 15.725 13.685 1.665
5.005 2.3 1200 Manhole Adoptable 2.4 1200 Manhole Adoptable
6.000 35.064 241.8 225 Circular_Default Sewer Type 15.700 14.425 1.050 15.700 14.280 1.195
6.000 13 1200 Manhole Adoptable 23 1200 Manhole Adoptable
6.001 23.486 162.0 225 Circular_Default Sewer Type 15.700 14.280 1.195 15.720 14.135 1.360
6.001 23 1200 Manhole Adoptable 24 1200 Manhole Adoptable
6.002 40.607 156.2 300 Circular_Default Sewer Type 15.720 14.060 1.360 15.670 13.800 1.570
6.002 24 1200 Manhole Adoptable 24.1 1200 Manhole Adoptable
7.000 20.213 6.6 225 Circular_Default Sewer Type 23.800 22.200 1.375 20.500 19.115 1.160
7.000 17 1200 Manhole Adoptable 18 1200 Manhole Adoptable
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven06/03/2020
Page 5
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
8.1
8
9.1
9
10
11.1
11
12
15
13
23
24
24.1
573964.128
573903.757
573783.104
573815.762
573793.734
573793.282
573792.915
573792.104
573813.784
573848.269
573883.275
573906.698
573907.143
157747.966
157722.740
157724.594
157724.594
157768.618
157812.850
157841.173
157921.291
157921.407
157959.993
157963.079
157963.318
157922.805
22.775
21.195
20.500
20.365
20.305
17.750
16.985
15.600
15.850
15.700
15.700
15.720
15.670
1.125
1.420
1.710
1.835
2.415
1.640
2.220
1.500
2.150
1.275
1.420
1.660
2.170
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
0
10
0
1 2
0
1
0
1
0
1
0
1
0
1 0
0
1 0
1
0
1
2
0
01
0
012
01
01
01
01
01
0
01
01
012
0
1.0001.000
1.001
2.0002.0001.001
1.0021.002
1.0031.003
1.0041.004
1.0051.005
1.0061.006
1.007
6.0006.000
6.0016.001
6.0026.0021.007
1.008
21.65019.925
19.775
18.79018.68018.530
18.53017.890
17.89016.110
16.11014.790
14.76514.100
14.10013.850
13.700
14.42514.280
14.28014.135
14.06013.80013.500
13.500
225225
375
225225375
375375
375375
375375
450450
450450
600
225225
225225
300300600
600
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven06/03/2020
Page 6
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
17
18.1
18
19
20
21
22
100
101
102
103
104
2.3
573985.663
573931.297
573922.846
573963.016
573955.216
573922.279
573907.699
574013.128
573996.117
573987.190
573975.229
573966.416
573955.983
157763.323
157745.584
157762.521
157782.339
157805.877
157824.029
157850.640
157771.795
157783.189
157824.817
157833.208
157871.639
157869.600
23.800
21.964
20.500
21.180
20.270
18.010
16.000
20.000
20.000
20.000
18.000
17.000
15.760
1.600
0.940
1.460
1.580
1.070
1.580
2.285
0.800
1.257
2.824
1.433
2.070
1.350
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
0
0
1
2
0
0
1
0
1
2
0
1
0
0
1
0
1
0
1
0
1
0
10
0
012
0
01
012
01
0
01
01
01
01
01
0
7.000
4.0007.0004.000
4.001
3.0003.000
3.0014.0013.001
3.0023.002
3.003
5.0005.000
5.0015.001
5.0025.002
5.0035.003
5.0045.004
5.005
22.200
21.02419.11519.115
19.040
19.60019.200
19.20016.65516.655
16.43013.715
13.715
19.20018.743
18.74317.176
17.17616.567
16.56714.930
14.93014.410
14.410
225
150225150
225
225225
225225225
450450
450
150150
150150
150150
150150
150150
375
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven06/03/2020
Page 7
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
2.4
25
23.4
23.3
23.2
Pump in
Pond
573907.143
573907.143
573911.410
573911.521
573927.811
573941.443
573941.705
157862.434
157912.610
157912.581
157920.740
157921.131
157925.902
157942.505
15.725
15.690
15.700
15.811
16.000
16.000
16.295
2.040
2.315
2.350
2.510
2.950
3.000
3.509
1200
1200
1200
1200
1200
1200
1200
1
2
0
1
2
0
1
0
1
0
10
1
0
1
12
012
01
01
01
01
01
5.0053.003
3.0043.0041.008
1.0091.009
1.0101.010
1.0111.011
1.0121.012
1.0131.013
13.68513.685
13.68513.37513.375
13.37513.350
13.35013.301
13.30113.050
13.05013.000
13.00012.786
375450
450450600
600600
600600
600600
600600
600600
Simula on Se ngs
Rainfall MethodologySummer CV
Winter CVAnalysis Speed
FEH-130.7500.840Detailed
Skip Steady StateDrain Down Time (mins)
Addi onal Storage (m³/ha)Check Discharge Rate(s)
x150020.0✓
Check Discharge Volume100 year 360 minute (m³)
✓
Storm Dura ons15 30 60 120 180 240 360 480 600 720 960 1440
Return Period(years)
Climate Change(CC %)
Addi onal Area(A %)
Addi onal Flow(Q %)
230
100100
000
40
0000
0000
Pre-development Discharge Rate
Site MakeupGreen eld Method
Posi vely Drained Area (ha)SAAR (mm)
Soil Index
Green eldIH124
1
SPRRegion
Growth Factor 1 yearGrowth Factor 30 year
Growth Factor 100 year
0.1010.851.952.48
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven06/03/2020
Page 8
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Pre-development Discharge Rate
Be erment (%)QBar
Q 1 year (l/s)
0 Q 30 year (l/s)Q 100 year (l/s)
Pre-development Discharge Volume
Site MakeupGreen eld Method
Posi vely Drained Area (ha)Soil Index
SPRCWI
Green eldFSR/FEH
10.10
Return Period (years)Climate Change (%)
Storm Dura on (mins)Be erment (%)
PRRuno Volume (m³)
10003600
Node Pump in Online Head/Flow Control
Flap Valve x Replaces Downstream Link ✓ Invert Level (m) 13.000
Head(m)
Flow(l/s)
Head(m)
Flow(l/s)
Head(m)
Flow(l/s)
Head(m)
Flow(l/s)
0.500 80.000 1.000 90.000 2.000 100.000 3.000 100.000
Node Pump in Depth/Area Storage Structure
Base Inf Coe cient (m/hr)Side Inf Coe cient (m/hr)
0.000000.00000
Safety FactorPorosity
2.01.00
Invert Level (m)Time to half empty (mins)
13.82048
Depth(m)
Area(m²)
Inf Area(m²)
Depth(m)
Area(m²)
Inf Area(m²)
Depth(m)
Area(m²)
Inf Area(m²)
0.000 875.0 0.0 0.785 1075.0 0.0 1.785 1293.0 0.0
Other (defaults)
Entry Loss (manhole)Exit Loss (manhole)
0.2500.250
Entry Loss (junc on)Exit Loss (junc on)
0.0000.000
Apply Recommended LossesFlood Risk (m)
x0.300
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven06/03/2020
Page 9
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 2 year Cri cal Storm Dura on. Lowest mass balance: 98.62%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 8.1 11 21.727 0.077 21.2 0.2929 0.0000 OK
15 minute winter 8.1 1.000 8 20.5 1.706 0.252 0.8507
15 minute winter 8 11 19.906 0.131 67.7 0.7656 0.0000 OK
15 minute winter 8 1.001 9 66.1 1.556 0.270 3.5899
15 minute winter 9.1 11 18.881 0.091 10.3 0.1804 0.0000 OK
15 minute winter 9.1 2.000 9 9.9 0.709 0.332 0.4577
15 minute winter 9 11 18.710 0.180 96.2 0.4908 0.0000 OK
15 minute winter 9 1.002 10 96.5 2.123 0.422 2.2330
15 minute winter 10 11 18.034 0.144 118.6 0.3589 0.0000 OK
15 minute winter 10 1.003 11.1 118.6 3.097 0.295 1.6981
15 minute winter 11.1 11 16.251 0.141 133.3 0.3483 0.0000 OK
15 minute winter 11.1 1.004 11 133.1 2.537 0.308 1.4930
15 minute winter 11 11 15.010 0.245 163.5 0.7793 0.0000 OK
15 minute winter 11 1.005 12 163.4 1.825 0.555 7.1829
15 minute winter 12 12 14.352 0.252 176.9 0.6256 0.0000 OK
15 minute winter 12 1.006 15 172.2 2.053 0.498 2.0907
15 minute winter 15 13 14.137 0.437 195.3 1.1942 0.0000 OK
15 minute winter 15 1.007 24.1 185.2 1.087 0.584 23.3935
15 minute winter 13 11 14.622 0.197 32.3 0.9253 0.0000 OK
15 minute winter 13 6.000 23 30.0 0.828 0.904 1.3443
15 minute winter 23 11 14.522 0.242 47.4 0.6886 0.0000 SURCHARGED
15 minute winter 23 6.001 24 45.1 1.181 1.106 0.8616
15 minute winter 24 10 14.217 0.157 48.5 0.2244 0.0000 OK
15 minute winter 24 6.002 24.1 48.5 1.230 0.547 2.1317
15 minute winter 24.1 13 14.096 0.596 232.7 0.6740 0.0000 OK
15 minute winter 24.1 1.008 25 238.8 0.965 0.312 2.8526
15 minute winter 17 10 22.231 0.031 8.1 0.0570 0.0000 OK
15 minute winter 17 7.000 18 8.0 2.486 0.039 0.0652
15 minute winter 18.1 10 21.086 0.062 19.1 0.2459 0.0000 OK
15 minute winter 18.1 4.000 18 18.9 2.835 0.330 0.1248
15 minute winter 18 10 19.145 0.105 45.1 0.3022 0.0000 OK
15 minute winter 18 4.001 21 44.0 2.477 0.427 1.0936
15 minute winter 19 10 19.698 0.098 23.5 0.3142 0.0000 OK
15 minute winter 19 3.000 20 23.2 1.587 0.350 0.3626
15 minute winter 20 10 19.281 0.081 36.3 0.2296 0.0000 OK
15 minute winter 20 3.001 21 35.6 2.850 0.262 0.4704
15 minute winter 21 11 16.538 0.108 89.0 0.2133 0.0000 OK
15 minute winter 21 3.002 22 88.7 1.525 0.131 5.6409
15 minute winter 22 13 14.160 0.445 90.8 0.5656 0.0000 OK
15 minute winter 22 3.003 2.4 83.7 1.013 0.521 1.8971
30 minute winter 100 26 19.236 0.036 4.6 0.1074 0.0000 OK
30 minute winter 100 5.000 101 4.6 0.651 0.126 0.1091
30 minute winter 101 32 18.882 0.139 24.8 0.8788 0.0000 OK
30 minute winter 101 5.001 102 24.5 1.903 0.671 0.6511
30 minute winter 102 34 18.382 1.206 31.7 2.3639 0.0000 SURCHARGED
30 minute winter 102 5.002 103 26.9 1.639 0.738 0.2572
30 minute winter 103 33 18.000 1.433 50.3 9.3002 0.0412 FLOOD
30 minute winter 103 5.003 104 42.6 2.422 1.169 0.6916
30 minute winter 104 34 15.420 0.490 43.1 0.5964 0.0000 SURCHARGED
30 minute winter 104 5.004 2.3 43.0 2.570 1.105 0.1695
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven06/03/2020
Page 10
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 2 year Cri cal Storm Dura on. Lowest mass balance: 98.62%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute summer 2.3 11 14.516 0.106 43.9 0.2159 0.0000 OK
15 minute summer 2.3 5.005 2.4 43.4 0.922 0.179 3.3379
15 minute winter 2.4 13 14.156 0.471 130.9 0.7042 0.0000 SURCHARGED
15 minute winter 2.4 3.004 25 121.3 1.041 0.479 7.9854
15 minute winter 25 13 14.077 0.702 315.1 0.8056 0.0000 SURCHARGED
15 minute winter 25 1.009 23.4 315.6 1.232 0.592 1.1723
15 minute winter 23.4 13 14.037 0.687 316.1 0.8118 0.0000 SURCHARGED
15 minute winter 23.4 1.010 23.3 316.5 1.597 0.593 2.2867
15 minute winter 23.3 14 13.993 0.692 317.1 0.8210 0.0000 SURCHARGED
15 minute winter 23.3 1.011 23.2 317.5 1.158 0.373 4.6305
30 minute winter 23.2 31 13.942 0.892 269.5 1.0272 0.0000 SURCHARGED
30 minute winter 23.2 1.012 Pump in 269.3 0.956 0.664 4.0297
30 minute winter Pump in 32 13.938 0.938 283.2 107.3407 0.0000 SURCHARGED
30 minute winter Pump in Head/Flow Pond 88.8 313.2
15 minute summer Pond 1 12.786 0.000 88.1 0.0000 0.0000 OK
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven06/03/2020
Page 11
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 30 year Cri cal Storm Dura on. Lowest mass balance: 98.62%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 8.1 10 21.786 0.136 55.3 0.5137 0.0000 OK
15 minute winter 8.1 1.000 8 53.4 2.174 0.656 1.7436
15 minute winter 8 10 20.004 0.229 177.0 1.3347 0.0000 OK
15 minute winter 8 1.001 9 173.5 1.891 0.707 7.4858
15 minute winter 9.1 12 19.156 0.366 26.7 0.7214 0.0000 SURCHARGED
15 minute winter 9.1 2.000 9 25.3 0.869 0.843 1.2966
15 minute winter 9 12 19.103 0.573 253.2 1.5665 0.0000 SURCHARGED
15 minute winter 9 1.002 10 237.9 2.413 1.041 5.4164
15 minute winter 10 12 18.449 0.559 295.5 1.3952 0.0000 SURCHARGED
15 minute winter 10 1.003 11.1 272.2 3.541 0.676 4.8883
15 minute winter 11.1 12 17.545 1.435 313.0 3.5472 0.0000 FLOOD RISK
15 minute winter 11.1 1.004 11 292.3 2.652 0.675 3.1333
15 minute winter 11 12 16.745 1.980 360.6 6.2873 0.0000 FLOOD RISK
15 minute winter 11 1.005 12 361.0 2.279 1.227 12.7108
15 minute winter 12 11 15.600 1.500 390.3 3.7170 16.5309 FLOOD
15 minute winter 12 1.006 15 319.0 2.157 0.922 3.4588
15 minute winter 15 12 15.332 1.632 381.8 4.4558 0.0000 SURCHARGED
15 minute winter 15 1.007 24.1 367.5 1.305 1.160 26.2841
15 minute winter 13 10 15.700 1.275 84.2 5.9823 10.0165 FLOOD
15 minute winter 13 6.000 23 47.1 1.183 1.415 1.3945
15 minute winter 23 11 15.647 1.367 89.6 3.8958 0.0000 FLOOD RISK
15 minute winter 23 6.001 24 68.7 1.728 1.687 0.9341
15 minute winter 24 12 15.242 1.182 78.0 1.6928 0.0000 SURCHARGED
15 minute winter 24 6.002 24.1 70.7 1.228 0.797 2.8595
15 minute winter 24.1 12 15.071 1.571 437.0 1.7765 0.0000 SURCHARGED
15 minute winter 24.1 1.008 25 431.0 1.530 0.563 2.8542
15 minute winter 17 10 22.248 0.048 21.1 0.0893 0.0000 OK
15 minute winter 17 7.000 18 21.0 2.478 0.103 0.4630
15 minute winter 18.1 10 21.133 0.109 49.7 0.4342 0.0000 OK
15 minute winter 18.1 4.000 18 50.0 3.303 0.875 0.2936
15 minute winter 18 12 19.428 0.388 118.5 1.1180 0.0000 SURCHARGED
15 minute winter 18 4.001 21 101.8 2.801 0.990 2.4426
15 minute winter 19 10 19.787 0.187 61.2 0.6031 0.0000 OK
15 minute winter 19 3.000 20 60.2 1.926 0.910 0.7697
15 minute winter 20 10 19.344 0.144 94.3 0.4095 0.0000 OK
15 minute winter 20 3.001 21 92.9 3.596 0.683 0.9731
15 minute winter 21 10 16.603 0.173 217.0 0.3407 0.0000 OK
15 minute winter 21 3.002 22 219.6 1.789 0.324 6.6770
15 minute winter 22 12 15.512 1.797 225.5 2.2834 0.0000 SURCHARGED
15 minute winter 22 3.003 2.4 207.3 1.308 1.289 1.8988
30 minute winter 100 21 20.000 0.800 14.5 2.3848 9.8078 FLOOD
30 minute winter 100 5.000 101 8.8 0.682 0.242 0.1931
30 minute winter 101 22 20.000 1.257 53.7 7.9618 18.7007 FLOOD
30 minute winter 101 5.001 102 31.8 1.920 0.872 0.6622
30 minute winter 102 26 19.136 1.960 45.3 3.8409 0.0000 SURCHARGED
30 minute winter 102 5.002 103 44.2 2.513 1.213 0.2572
60 minute winter 103 31 18.000 1.433 100.5 9.3002 71.5186 FLOOD
60 minute winter 103 5.003 104 42.7 2.427 1.172 0.6916
15 minute winter 104 13 16.090 1.159 43.7 1.4123 0.0000 SURCHARGED
15 minute winter 104 5.004 2.3 45.3 2.607 1.163 0.1931
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven06/03/2020
Page 12
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 30 year Cri cal Storm Dura on. Lowest mass balance: 98.62%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 2.3 12 15.472 1.062 57.6 2.1608 0.0000 FLOOD RISK
15 minute winter 2.3 5.005 2.4 70.7 0.928 0.292 5.4489
15 minute winter 2.4 12 15.419 1.734 271.1 2.5911 0.0000 SURCHARGED
15 minute winter 2.4 3.004 25 270.7 1.708 1.069 7.9854
15 minute winter 25 12 14.982 1.607 680.1 1.8453 0.0000 SURCHARGED
15 minute winter 25 1.009 23.4 679.7 2.413 1.276 1.1723
15 minute winter 23.4 12 14.794 1.444 681.4 1.7068 0.0000 SURCHARGED
15 minute winter 23.4 1.010 23.3 681.0 2.418 1.275 2.2867
30 minute winter 23.3 21 14.593 1.292 649.5 1.5341 0.0000 SURCHARGED
30 minute winter 23.3 1.011 23.2 648.7 2.303 0.762 4.6305
120 minute winter 23.2 112 14.376 1.326 330.9 1.5257 0.0000 SURCHARGED
120 minute winter 23.2 1.012 Pump in 330.6 1.174 0.815 4.0297
120 minute winter Pump in 114 14.370 1.370 351.1 523.8820 0.0000 SURCHARGED
120 minute winter Pump in Head/Flow Pond 93.7 1181.1
15 minute summer Pond 1 12.786 0.000 91.4 0.0000 0.0000 OK
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven06/03/2020
Page 13
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year Cri cal Storm Dura on. Lowest mass balance: 98.62%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 8.1 10 21.813 0.163 71.1 0.6180 0.0000 OK
15 minute winter 8.1 1.000 8 68.5 2.229 0.842 2.4615
15 minute winter 8 12 20.706 0.931 227.8 5.4321 0.0000 SURCHARGED
15 minute winter 8 1.001 9 201.0 1.936 0.819 9.1627
15 minute winter 9.1 12 20.095 1.305 34.4 2.5742 0.0000 SURCHARGED
15 minute winter 9.1 2.000 9 26.8 0.941 0.895 1.2966
15 minute winter 9 12 20.000 1.470 286.7 4.0183 0.0000 SURCHARGED
15 minute winter 9 1.002 10 252.1 2.383 1.103 5.4164
15 minute winter 10 12 19.068 1.178 313.0 2.9421 0.0000 SURCHARGED
15 minute winter 10 1.003 11.1 313.5 3.537 0.779 4.8883
15 minute winter 11.1 10 17.750 1.640 354.5 4.0541 10.3924 FLOOD
15 minute winter 11.1 1.004 11 314.8 2.855 0.727 3.1333
15 minute winter 11 11 16.960 2.195 400.7 6.9726 0.0000 FLOOD RISK
15 minute winter 11 1.005 12 393.2 2.482 1.337 12.7108
30 minute winter 12 17 15.600 1.500 415.4 3.7170 52.2571 FLOOD
30 minute winter 12 1.006 15 307.4 2.008 0.888 3.4588
15 minute winter 15 12 15.401 1.701 393.4 4.6453 0.0000 SURCHARGED
15 minute winter 15 1.007 24.1 372.0 1.321 1.174 26.2841
15 minute winter 13 9 15.700 1.275 108.2 5.9823 23.7087 FLOOD
15 minute winter 13 6.000 23 46.0 1.157 1.384 1.3945
15 minute winter 23 10 15.700 1.420 92.7 4.0456 0.4217 FLOOD
15 minute winter 23 6.001 24 74.9 1.884 1.839 0.9341
15 minute winter 24 12 15.344 1.284 84.2 1.8380 0.0000 SURCHARGED
15 minute winter 24 6.002 24.1 73.1 1.286 0.824 2.8595
15 minute winter 24.1 12 15.179 1.679 443.4 1.8987 0.0000 SURCHARGED
15 minute winter 24.1 1.008 25 436.7 1.551 0.571 2.8542
15 minute winter 17 10 22.255 0.055 27.2 0.1015 0.0000 OK
15 minute winter 17 7.000 18 27.1 2.425 0.132 0.4778
15 minute winter 18.1 12 21.763 0.739 63.9 2.9434 0.0000 FLOOD RISK
15 minute winter 18.1 4.000 18 51.0 3.277 0.893 0.3301
15 minute winter 18 12 20.199 1.159 134.5 3.3417 0.0000 SURCHARGED
15 minute winter 18 4.001 21 117.5 2.955 1.142 2.4426
15 minute winter 19 11 20.020 0.420 78.7 1.3529 0.0000 SURCHARGED
15 minute winter 19 3.000 20 74.4 2.019 1.125 0.8933
15 minute winter 20 11 19.370 0.170 115.7 0.4860 0.0000 OK
15 minute winter 20 3.001 21 116.1 3.733 0.854 1.1696
15 minute winter 21 11 16.666 0.236 261.6 0.4633 0.0000 OK
15 minute winter 21 3.002 22 257.8 1.870 0.380 7.5414
15 minute winter 22 12 15.873 2.158 264.9 2.7431 0.0000 FLOOD RISK
15 minute winter 22 3.003 2.4 262.7 1.658 1.634 1.8988
60 minute winter 100 33 20.000 0.800 14.6 2.3848 17.4591 FLOOD
60 minute winter 100 5.000 101 7.5 0.672 0.207 0.1931
30 minute winter 101 19 20.000 1.257 69.2 7.9618 39.5548 FLOOD
30 minute winter 101 5.001 102 31.2 1.903 0.854 0.6622
30 minute winter 102 26 19.303 2.127 48.1 4.1685 0.0000 SURCHARGED
30 minute winter 102 5.002 103 47.4 2.692 1.299 0.2572
60 minute winter 103 28 18.000 1.433 121.1 9.3002 112.1490 FLOOD
60 minute winter 103 5.003 104 42.7 2.428 1.172 0.6916
15 minute winter 104 13 16.337 1.407 43.9 1.7133 0.0000 SURCHARGED
15 minute winter 104 5.004 2.3 45.4 2.626 1.168 0.1931
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven06/03/2020
Page 14
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year Cri cal Storm Dura on. Lowest mass balance: 98.62%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 2.3 12 15.760 1.350 97.1 2.7473 0.4024 FLOOD
15 minute winter 2.3 5.005 2.4 70.3 0.887 0.290 5.4489
15 minute winter 2.4 12 15.725 2.040 327.7 3.0478 0.1916 FLOOD
15 minute winter 2.4 3.004 25 324.5 2.048 1.282 7.9854
15 minute winter 25 12 15.102 1.727 712.5 1.9828 0.0000 SURCHARGED
15 minute winter 25 1.009 23.4 711.4 2.526 1.335 1.1723
30 minute winter 23.4 21 14.913 1.563 681.3 1.8469 0.0000 SURCHARGED
30 minute winter 23.4 1.010 23.3 680.5 2.416 1.274 2.2867
60 minute winter 23.3 38 14.718 1.417 611.5 1.6820 0.0000 SURCHARGED
60 minute winter 23.3 1.011 23.2 610.6 2.168 0.717 4.6305
120 minute winter 23.2 116 14.618 1.568 418.4 1.8045 0.0000 SURCHARGED
120 minute winter 23.2 1.012 Pump in 418.0 1.484 1.031 4.0297
120 minute winter Pump in 118 14.612 1.612 444.6 777.2986 0.0000 SURCHARGED
120 minute winter Pump in Head/Flow Pond 96.1 1489.8
15 minute summer Pond 1 12.786 0.000 92.1 0.0000 0.0000 OK
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven06/03/2020
Page 15
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year +40% CC Cri cal Storm Dura on. Lowest mass balance: 98.62%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 8.1 11 22.775 1.125 99.5 4.2525 1.4533 FLOOD
15 minute winter 8.1 1.000 8 73.7 2.235 0.906 2.8206
15 minute winter 8 10 21.195 1.420 287.1 8.2857 15.8552 FLOOD
15 minute winter 8 1.001 9 215.0 2.010 0.877 9.1627
15 minute winter 9.1 10 20.500 1.710 48.1 3.3738 2.3612 FLOOD
15 minute winter 9.1 2.000 9 30.8 0.809 1.026 1.2966
15 minute winter 9 10 20.365 1.835 316.5 5.0151 10.2402 FLOOD
15 minute winter 9 1.002 10 271.4 2.461 1.187 5.4164
15 minute winter 10 10 19.471 1.581 358.2 3.9483 0.0000 SURCHARGED
15 minute winter 10 1.003 11.1 357.8 3.524 0.889 4.8883
15 minute winter 11.1 9 17.750 1.640 431.3 4.0541 37.5944 FLOOD
15 minute winter 11.1 1.004 11 321.7 2.917 0.743 3.1333
15 minute winter 11 9 16.985 2.220 437.6 7.0507 6.9066 FLOOD
15 minute winter 11 1.005 12 396.4 2.502 1.347 12.7108
30 minute winter 12 15 15.600 1.500 448.6 3.7170 122.5216 FLOOD
30 minute winter 12 1.006 15 302.9 1.994 0.875 3.4588
15 minute winter 15 10 15.453 1.753 415.9 4.7883 0.0000 SURCHARGED
15 minute winter 15 1.007 24.1 381.2 1.354 1.203 26.2841
30 minute winter 13 14 15.700 1.275 117.2 5.9823 52.0547 FLOOD
30 minute winter 13 6.000 23 42.4 1.065 1.274 1.3945
15 minute winter 23 9 15.700 1.420 100.0 4.0456 5.8516 FLOOD
15 minute winter 23 6.001 24 74.7 1.878 1.834 0.9341
30 minute winter 24 19 15.403 1.343 75.1 1.9233 0.0000 SURCHARGED
30 minute winter 24 6.002 24.1 71.7 1.177 0.808 2.8595
60 minute winter 24.1 36 15.270 1.770 405.5 2.0024 0.0000 SURCHARGED
60 minute winter 24.1 1.008 25 404.6 1.437 0.529 2.8542
15 minute winter 17 10 22.265 0.065 38.1 0.1204 0.0000 OK
15 minute winter 17 7.000 18 38.0 2.557 0.186 0.4984
15 minute winter 18.1 10 21.964 0.940 89.5 3.7431 6.8811 FLOOD
15 minute winter 18.1 4.000 18 49.4 3.285 0.864 0.3301
15 minute winter 18 10 20.500 1.460 168.5 4.2106 6.2323 FLOOD
15 minute winter 18 4.001 21 122.7 3.085 1.192 2.4427
15 minute winter 19 12 20.911 1.311 110.2 4.2223 0.0000 FLOOD RISK
15 minute winter 19 3.000 20 91.5 2.300 1.383 0.9862
15 minute winter 20 12 19.986 0.786 152.1 2.2413 0.0000 FLOOD RISK
15 minute winter 20 3.001 21 141.1 3.685 1.037 1.4960
15 minute winter 21 11 16.719 0.289 302.9 0.5687 0.0000 OK
15 minute winter 21 3.002 22 301.7 2.058 0.445 8.2770
15 minute winter 22 11 15.937 2.222 311.8 2.8240 0.0000 FLOOD RISK
15 minute winter 22 3.003 2.4 310.8 1.962 1.933 1.8988
120 minute winter 100 54 20.000 0.800 14.7 2.3848 28.7222 FLOOD
120 minute winter 100 5.000 101 6.2 0.645 0.171 0.1931
60 minute winter 101 29 20.000 1.257 89.3 7.9618 81.1035 FLOOD
60 minute winter 101 5.001 102 29.1 1.884 0.799 0.6622
30 minute winter 102 26 19.581 2.405 52.5 4.7142 0.0000 SURCHARGED
30 minute winter 102 5.002 103 52.2 2.966 1.431 0.2572
120 minute winter 103 48 18.000 1.433 122.6 9.3002 193.5195 FLOOD
120 minute winter 103 5.003 104 42.6 2.421 1.169 0.6916
30 minute winter 104 23 16.367 1.437 43.7 1.7507 0.0000 SURCHARGED
30 minute winter 104 5.004 2.3 44.6 2.532 1.145 0.1931
Idom Merebrook Ltd File: NETWORK 2.PFDNetwork: Exis ng Hardstanding NetworkSam Raven06/03/2020
Page 16
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year +40% CC Cri cal Storm Dura on. Lowest mass balance: 98.62%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 2.3 10 15.760 1.350 105.5 2.7473 5.0746 FLOOD
15 minute winter 2.3 5.005 2.4 69.1 0.901 0.285 5.4489
15 minute winter 2.4 10 15.725 2.040 383.0 3.0478 15.0271 FLOOD
15 minute winter 2.4 3.004 25 319.7 2.018 1.263 7.9854
60 minute winter 25 36 15.211 1.836 647.3 2.1076 0.0000 SURCHARGED
60 minute winter 25 1.009 23.4 646.6 2.296 1.214 1.1723
120 minute winter 23.4 74 15.080 1.730 555.5 2.0452 0.0000 SURCHARGED
120 minute winter 23.4 1.010 23.3 554.8 1.970 1.039 2.2867
180 minute winter 23.3 172 15.046 1.745 446.0 2.0716 0.0000 SURCHARGED
180 minute winter 23.3 1.011 23.2 445.6 1.582 0.523 4.6305
180 minute winter 23.2 172 15.040 1.990 446.1 2.2900 0.0000 SURCHARGED
180 minute winter 23.2 1.012 Pump in 445.6 1.582 1.099 4.0297
180 minute winter Pump in 176 15.033 2.033 474.3 1251.0380 0.0000 SURCHARGED
180 minute winter Pump in Head/Flow Pond 100.0 2319.3
15 minute summer Pond 1 12.786 0.000 93.0 0.0000 0.0000 OK
ALLINGTON EXTENSION, ALLINGTON
DRAINAGE REPORT
Produced by IDOM Reference : 100509-XX-RP-D-501, June 2020 For FCC
APPENDIX 3 ▪ 100509-01-DR-C-500, Indicative DrainageGA (Full Site)
▪ 100509-01-DR-C-501, Indicative Drainage GA Sheet 1
▪ 100509-01-DR-C-502, Indicative Drainage GA Sheet 2
▪ 100509-01-DR-C-503, Indicative Drainage GA Sheet 3
▪ 100509-01-DR-C-504, Indicative Drainage GA Sheet 4
Fuel
Oil
S
ta
ff C
a
r P
a
rk
Coach
Visitor
Car Park
Attenuation
Lagoon
Gas Store
Container Store
IN
Attenuation
Lagoon
Vehicle Parking
Area
Manoeuvring Apron
Car and Van Parking
Car and Van Parking
Construction
Laydown and
Car Park
Overflow Area
IN
OU
T
Directions
gantry
GIVE
WAY
GIV
E
WA
Y
BY PASS
BY PASS
Pipe Bridge
OUT
G
I
V
E
W
A
Y
GIVE
WAY
GIV
E
WA
Y
DistrictHeatingCentre
RESERVED SPACES
UKPN
HeatingStorage
SIn
S1.1
S2
S4
S110
S11.1
S11
S15
S23.4
S20
S101
S102
S103
S104
S12
S120
S125
S126 - OUTFALL
S124
S25.3
S13
S123
S25.2
S23
S24
S25.1
S122
S121
SPump in
S23.2
S24.1
S23.3
S25.4
S3
S25
S22
S2.1
S21
S19
S1
S18
S18.1
S100
S2.3
S2.4
S119
S118
S5
S6.1
S7
S117
S116
S10
S6
S115
S9
S114
S113
S9.1
S112
S111
S8
S8.1
S17
RISING MAIN TO PUBLIC SEWER
S200
S201
S202
S203
S205
S206
S207
S209
S210
S211
S212
S215
S217
S218 Hydrobrake
S219
S208
S221
S222
S224
S225
S226
S227
S228
S223
S229
S231
S213
S232
S230
S233
S234
S236
S237
S239
S216
S240
S241
S235
S242
S243
S238
S400
S401
S402
S403S404
S405
S406
S407
S408S409
S410
S411
S412
S413
S502
S504
S501
S600
S601 S602
S603
S604
S605
S606
S503
S609
S610
S611
S612
S613
S614
S615
S607
S220
S204
P
E
T
R
O
L
IN
T
E
R
C
E
P
T
O
R
N
S
F
A
2
0
0
PE
TR
OL IN
TE
RC
EP
TO
R N
SF
A065
PETROL INTERCEPTOR
NSFA040
PE
TR
OL IN
TE
RC
EP
TO
R
NS
FA
200
PETROL INTERCEPTOR
NSFA200
SEPTIC TANK
TREATMENT FOR PROCESS WATER
KEY
EXISTING SW DRAINAGE
EXISTING TO BE ABANDONED
PROPOSED SW DRAINAGE
PROPOSED ROOF/GROUND WATER
DRAINAGE
PROPOSED FW DRAINAGE
S
T
L
A
U
R
E
N
C
E
A
V
E
N
U
E
Fuel
Oil
S
ta
ff C
a
r P
a
rk
Coach
Visitor
Car Park
Attenuation
Lagoon
Gas Store
Container Store
IN
Attenuation
Lagoon
Vehicle Parking
Area
Manoeuvring Apron
Car and Van Parking
Car and Van Parking
Construction
Laydown and
Car Park
Overflow Area
IN
OU
T
Directions
gantry
GIVE
WAY
GIV
E
WA
Y
BY PASS
BY PASS
Pipe Bridge
OUT
G
IV
E
W
A
Y
GIVE
WAY
GIV
E
WA
Y
DistrictHeatingCentre
RESERVED SPACES
UKPN
HeatingStorage
1 2
43
C.L 22.630
I.L 20.746
F13
SEPTIC TANK
TREATMENT FOR PROCESS WATER
Revision
Approved
Frame Dimensions mm
(A0) 1139 x 791
Drawn Checked
Dwg Title
Scale
Dwg No.
Project
Date
Client
17/02/2020
Issue Details Dwn App'dChd
FIRST ISSUE
P0
SR JR JR
Cromford Mills, Mill Lane, Matlock, Derbyshire DE4 3RQt: +44(0)1773 829 988 f: +44(0)1773 829 393 e: [email protected]
10
0 10 20 30 40 50m
2468
SCALE 1:500 (A0)
London
Kent
Derbyshire
Manchester
Stirling
N
SURFACE WATER - FULL SITE
INDICATIVE DRAINAGE GA
ALLINGON EXTENSION
FCC
100509-01-DR-C-500 P2
February 2020
SR JR JR
1:250
Notes
1. EXISTING DRAINAGE IS BASED ON AS BUILT
INFORMATION PROVIDED BY FCC.
2. ONLY MAIN DRAINAGE IS SHOWN, INDIVIDUAL
CONNECTIONS HAVE BEEN OMITTED FOR CLARITY.
3. THIS DRAWING IS TO BE READ IN CONJUNCTION
WITH IDOM DRAWINGS:
100509-00-DR-C-0500, EXISTING GA
100509-00-DR-C-0501, EXISTING GA SHEET 1
100509-00-DR-C-0502, EXISTING GA SHEET 2
100509-00-DR-C-0503, EXISTING GA SHEET 3
100509-00-DR-C-0504, EXISTING GA SHEET 4
100509-01-DR-C-0500, PROPOSED GA
100509-01-DR-C-0501, PROPOSED GA SHEET 1
100509-01-DR-C-0502, PROPOSED GA SHEET 2
100509-01-DR-C-0503, PROPOSED GA SHEET 3
100509-01-DR-C-0504, PROPOSED GA SHEET 4
SHEET LAYOUT, SCALE 1:12500
PRELIMINARY
COMMENT
TENDER
CONSTRUCTION
ISSUE PURPOSE
INFORMATION
06/03/20
AMENDMENTS FOLLOWING CLIENT COMMENTS
P1
SR JR JR
16/03/20
FOUL DRAINAGE ADDED (PROVIDED BY FCC)
P2
BMS JR JR
Attenuation
Lagoon
Manoeuvring Apron
Car and Van Parking
Construction
Laydown and
Car Park
Overflow Area
S126 - OUTFALL
52
5Ø
G
RA
D 1
IN
7
7 8
.0
09
675Ø
G
RA
D 1 IN
577 8.010
6
7
5
Ø
G
R
A
D
1
IN
5
7
3
8
.0
1
1
7
5
0
Ø
G
R
A
D
1
I
N
6
7
4
8
.
0
1
3
750Ø GRAD 1 IN 674 8.014
750Ø GRAD 1 IN 673 8.015
S210
CL 16.000
IL 14.733
S211
CL 16.000
IL 14.662
S212
CL 16.000
IL 14.625
S214
CL 16.700
IL 14.423
S215
CL 16.650
IL 14.353
45
0Ø
G
RA
D 1 IN
4
07
1
0.0
00
45
0Ø
G
RA
D 1
IN
3
95
1
0.0
01
60
0Ø
G
RA
D 1
IN
1
5 1
0.0
02
6
0
0
Ø
G
R
A
D
1
I
N
4
5
1
0
.
0
0
3
S222
CL 18.000
IL 16.169
S224
CL 18.000
IL 14.981
S225
CL 16.000
IL 14.734
4
5
0
Ø
G
R
A
D
1
IN
4
0
5
1
1
.0
0
0
450Ø
G
RA
D 1 IN
406 11.001
450Ø GRAD 1 IN 403 11.002
S227
CL 18.000
IL 16.247
S228
CL 18.000
IL 16.070
S223
CL 18.000
IL 15.870
450Ø
G
RA
D 1 IN
452 12.000
450Ø GRAD 1 IN 455 12.001
S229
CL 16.000
IL 14.897
S231
CL 16.000
IL 14.792
S213
CL 16.000
IL 14.462
4
5
0
Ø
G
R
A
D
1
I
N
4
4
6
1
3
.
0
0
0
S232
CL 16.000
IL 14.859
S230
CL 16.000
IL 14.820
60
0Ø
G
RA
D 1
IN
6
00
1
5.0
00
600Ø GRAD 1 IN 602 15.001
S240
CL 16.000
IL 14.693
S241
CL 16.000
IL 14.593
450Ø GRAD 1 IN 448 16.000
S242
CL 16.000
IL 14.704
S243
CL 16.000
IL 14.604
600Ø
G
RA
D 1 IN
502 1.011
600Ø
G
RA
D 1 IN
14 1.012
S412
CL 19.000
IL 16.436
S413
CL 13.000
IL 11.000
1200Ø GRAD 1 IN 999 1.008
1200Ø GRAD 1 IN 60 1.009
S502
CL 20.700
IL 12.601
S504
CL 13.000
IL 11.000
30
0Ø
G
RA
D 1
IN
2
42
5
.0
00
300Ø GRAD 1 IN 241 5.001
37
5Ø
G
RA
D 1
IN
3
25
5
.0
02
3
7
5
Ø
G
R
A
D
1
IN
3
2
2
5
.0
0
3
37
5Ø
G
RA
D 1
IN
3
21
5
.0
04
3
7
5
Ø
G
R
A
D
1
I
N
3
2
4
5
.
0
0
5
375Ø GRAD 1 IN 272 5.006
4
5
0
Ø
G
R
A
D
1
I
N
3
5
5
.
0
0
7
S600
CL 16.000
IL 14.500
S601
CL 16.000
IL 14.419
S602
CL 16.000
IL 14.317
S603
CL 16.000
IL 14.194
S604
CL 16.000
IL 14.075
S605
CL 16.000
IL 13.995
S606
CL 16.000
IL 13.930
S503
CL 19.300
IL 12.527
30
0Ø
G
RA
D 1
IN
2
45
6
.0
00
300Ø GRAD 1 IN 243 6.001
37
5Ø
G
RA
D 1
IN
3
22
6
.0
02
375Ø GRAD 1 IN 319 6.003
37
5Ø
G
RA
D 1
IN
3
23
6
.0
04
375Ø GRAD 1 IN 320 6.005
37
5Ø
G
RA
D 1
IN
3
19
6
.0
06
S609
CL 16.000
IL 14.500
S610
CL 16.000
IL 14.283
S611
CL 16.000
IL 14.176
S612
CL 16.000
IL 14.091
S613
CL 16.000
IL 14.036
S614
CL 16.000
IL 13.897
S615
CL 16.000
IL 13.844
S607
CL 16.000
IL 13.719
S220
CL 18.000
IL 16.650
P
E
T
R
O
L
IN
T
E
R
C
E
P
T
O
R
N
S
F
A
2
0
0
PE
TR
OL IN
TE
RC
EP
TO
R N
SF
A065
PETROL INTERCEPTOR
NSFA040
SEPTIC TANK
TREATMENT FOR PROCESS WATER
EXISTING SW DRAINAGE
EXISTING TO BE ABANDONED
PROPOSED SW DRAINAGE
PROPOSED ROOF/GROUND WATER
DRAINAGE
KEY
EXISTING SW DRAINAGE
EXISTING TO BE ABANDONED
PROPOSED SW DRAINAGE
PROPOSED ROOF/GROUND WATER
DRAINAGE
PROPOSED FW DRAINAGE
S
T
L
A
U
R
E
N
C
E
A
V
E
N
U
E
Fuel
Oil
S
ta
ff C
a
r P
a
rk
Coach
Visitor
Car Park
Attenuation
Lagoon
Gas Store
Container Store
IN
Attenuation
Lagoon
Vehicle Parking
Area
Manoeuvring Apron
Car and Van Parking
Car and Van Parking
Construction
Laydown and
Car Park
Overflow Area
IN
OU
T
Directions
gantry
GIVE
WAY
GIV
E
WA
Y
BY PASS
BY PASS
Pipe Bridge
OUT
G
IV
E
W
A
Y
GIVE
WAY
GIV
E
WA
Y
DistrictHeatingCentre
RESERVED SPACES
UKPN
HeatingStorage
1 2
43
C.L 22.630
I.L 20.746
F13
SEPTIC TANK
TREATMENT FOR PROCESS WATER
Revision
Approved
Frame Dimensions mm
(A0) 1139 x 791
Drawn Checked
Dwg Title
Scale
Dwg No.
Project
Date
Client
17/02/20
Issue Details Dwn App'dChd
FIRST ISSUE
P0
SR JR JR
Cromford Mills, Mill Lane, Matlock, Derbyshire DE4 3RQt: +44(0)1773 829 988 f: +44(0)1773 829 393 e: [email protected]
SCALE 1:250
5 4 3 2 1
5 10 15 20 25m0
(A0)
London
Kent
Derbyshire
Manchester
Stirling
N
SHEET 1 OF 4
INDICATIVE DRAINAGE GA
ALLINGON EXTENSION
FCC
100509-01-DR-C-501 P2
February 2020
SR JR JR
1:250
Notes
1. The purpose of this drawing is to illustrate the proposed
drainage networks at the Allington recycling plant.
2. The existing drainage shown is based on as built
information provided by FCC.
3. This drawing is to be read in conjunction with IDOM
Merebrook drawings 100509-00-DR-C-0500 0501 0502
0503 0504 and 100509-01-DR-C-0500 0502 0503 0504.
SHEET LAYOUT, SCALE 1:12500
PRELIMINARY
COMMENT
TENDER
CONSTRUCTION
ISSUE PURPOSE
INFORMATION
06/03/20
AMENDMENTS FOLLOWING CLIENT COMMENTS
P1
SR JR JR
16/03/20
FOUL DRAINAGE ADDED (PROVIDED BY FCC)
P2
BMS JR JR
Fuel
Oil
S
ta
ff C
a
r P
a
rk
Coach
Attenuation
Lagoon
Gas Store
Container Store
GIV
E
WA
Y
Pipe Bridge
GIVE
WAY
GIV
E
WA
Y
DistrictHeatingCentre
RESERVED SPACES
UKPN
HeatingStorage
SIn
S1.1
S2
S4
S11.1
S11
S15
S23.4
S20
S102
S103
S104
S12
S120
S125
S124
S25.3
S13
S123
S25.2
S23S24
S25.1
S122
S121
SPump in
S23.2
S24.1
S23.3
S25.4
S3
S25
S22
S2.1
S21
S2.3
S2.4
S119
S118
S5
S6.1
S7
S117
S116
RISING MAIN TO PUBLIC SEWER
750Ø GRAD 1 IN 673 8.015750Ø GRAD 1 IN 673 8.016 750Ø GRAD 1 IN 675 8.017
300
Ø G
RA
D 1 IN
3
00 8
.0
18
S217
CL 18.000
IL 14.115
S218 Hydrobrake
CL 17.350
IL 14.011
S219
CL 16.000
IL 13.966
60
0Ø
G
RA
D 1
IN
6
00
1
4.0
00
60
0Ø
G
RA
D 1
IN
6
00
1
4.0
01
600Ø
G
RA
D 1 IN
602 14.002
60
0Ø
G
RA
D 1
IN
6
03
1
4.0
03
600Ø
G
RA
D 1 IN
584 14.0004
750Ø 14.005
GRAD 1 IN 721
7
5
0
Ø
1
4
.
0
0
6
G
R
A
D
1
I
N
7
9
1
S234
CL 16.000
IL 14.667
S236
CL 16.000
IL 14.508
S237
CL 16.000
IL 14.459
S239
CL 16.000
IL 14.258
S216
CL 16.800
IL 14.249
60
0Ø
G
RA
D 1
IN
6
00
1
5.0
00
600Ø GRAD 1 IN 602 15.001
S240
CL 16.000
IL 14.693
S241
CL 16.000
IL 14.593
S235
CL 16.000
IL 14.567
450Ø GRAD 1 IN 451 16.001
S243
CL 16.000
IL 14.604
S238
CL 16.000
IL 14.271
1200Ø GRAD 1 IN 1010 1.007
S502
CL 20.700
IL 12.601
500Ø
G
R
A
D
1 IN
127 4.002
S501
CL 21.250
IL 12.646
PE
TR
OL IN
TE
RC
EP
TO
R
NS
FA
200
PETROL INTERCEPTOR
NSFA200
KEY
EXISTING SW DRAINAGE
EXISTING TO BE ABANDONED
PROPOSED SW DRAINAGE
PROPOSED ROOF/GROUND WATER
DRAINAGE
EXISTING SW DRAINAGE
EXISTING TO BE ABANDONED
PROPOSED SW DRAINAGE
PROPOSED ROOF/GROUND WATER
DRAINAGE
PROPOSED FW DRAINAGE
S
T
L
A
U
R
E
N
C
E
A
V
E
N
U
E
Fuel
Oil
S
ta
ff C
a
r P
a
rk
Coach
Visitor
Car Park
Attenuation
Lagoon
Gas Store
Container Store
IN
Attenuation
Lagoon
Vehicle Parking
Area
Manoeuvring Apron
Car and Van Parking
Car and Van Parking
Construction
Laydown and
Car Park
Overflow Area
IN
OU
T
Directions
gantry
GIVE
WAY
GIV
E
WA
Y
BY PASS
BY PASS
Pipe Bridge
OUT
G
IV
E
W
A
Y
GIVE
WAY
GIV
E
WA
Y
DistrictHeatingCentre
RESERVED SPACES
UKPN
HeatingStorage
1 2
43
C.L 22.630
I.L 20.746
F13
SEPTIC TANK
TREATMENT FOR PROCESS WATER
Revision
Approved
Frame Dimensions mm
(A0) 1139 x 791
Drawn Checked
Dwg Title
Scale
Dwg No.
Project
Date
Client
17/02/20
Issue Details Dwn App'dChd
FIRST ISSUE
P0
SR JR JR
Cromford Mills, Mill Lane, Matlock, Derbyshire DE4 3RQt: +44(0)1773 829 988 f: +44(0)1773 829 393 e: [email protected]
SCALE 1:250
5 4 3 2 1
5 10 15 20 25m0
(A0)
London
Kent
Derbyshire
Manchester
Stirling
N
SHEET 2 OF 4
INDICATIVE DRAINAGE GA
ALLINGTON EXTENSION
FCC
100509-01-DR-C-502 P3
February 2020
SR JR JR
1:250
Notes
1. The purpose of this drawing is to illustrate the proposed
drainage networks at the Allington recycling plant.
2. The existing drainage shown is based on as built
information provided by FCC.
3. This drawing is to be read in conjunction with IDOM
Merebrook drawings 100509-00-DR-C-0500 0501 0502
0503 0504 and 100509-01-DR-C-0500 0501 0503 0504.
SHEET LAYOUT, SCALE 1:12500
PRELIMINARY
COMMENT
TENDER
CONSTRUCTION
ISSUE PURPOSE
INFORMATION
06/03/20
AMENDMENTS FOLLOWING CLIENT COMMENTS
P1
SR JR JR
12/03/20
EXISTING RISING MAIN LINE TYPE CHANGED
P2
BMS JR JR
16/03/20
FOUL DRAINAGE ADDED (PROVIDED BY FCC)
P3
BMS JR JR
IN
Vehicle Parking
Area
Manoeuvring Apron
Car and Van Parking
OUT
3
7
5
Ø
G
R
A
D
1
IN
3
2
3
8
.0
0
3
3
7
5
Ø
G
R
A
D
1
I
N
3
1
6
8
.
0
0
4
45
0Ø
G
RA
D 1
IN
2
5 8
.0
05
5
2
5
Ø
G
R
A
D
1
I
N
3
9
9
8
.
0
0
6
525Ø GRAD 1 IN 407 8.007
525Ø GRAD 1 IN 489 8.008
52
5Ø
G
RA
D 1
IN
7
7 8
.0
09
S205
CL 20.000
IL 18.267
S206
CL 18.000
IL 16.275
S207
CL 18.000
IL 16.238
S209
CL 18.000
IL 16.053
375Ø
G
R
A
D
1 IN
81 9.000
S208
CL 18.000
IL 16.137
45
0Ø
G
RA
D 1 IN
40
7 10
.0
00
S221
CL 18.000
IL 16.350
4
5
0
Ø
G
R
A
D
1
IN
4
0
5
1
1
.0
0
0
S226
CL 18.000
IL 16.350
5
2
5
Ø
G
R
A
D
1
I
N
5
0
1
.
0
0
4
600Ø
G
RA
D 1 IN
51 1.005
6
0
0
Ø
G
R
A
D
1
I
N
9
2
1
.
0
0
6
600Ø GRAD 1 IN 581 1.007600Ø GRAD 1 IN 581 1.008600Ø GRAD 1 IN 581 1.009
6
0
0
Ø
G
R
A
D
1
I
N
5
8
0
1
.
0
1
0
S404
CL 20.800
IL 18.452
S405
CL 21.200
IL 17.992
S406
CL 18.900
IL 17.100
S407
CL 18.800
IL 17.000
S408
CL 18.800
IL 16.886
S409
CL 18.750
IL 16.772
S410
CL 18.700
IL 16.658
S411
CL 18.800
IL 16.592
S220
CL 18.000
IL 16.650
S204
CL 20.000
IL 18.377
KEY
EXISTING SW DRAINAGE
EXISTING TO BE ABANDONED
PROPOSED SW DRAINAGE
PROPOSED ROOF/GROUND WATER
DRAINAGE
S
T
L
A
U
R
E
N
C
E
A
V
E
N
U
E
Fuel
Oil
S
ta
ff C
a
r P
a
rk
Coach
Visitor
Car Park
Attenuation
Lagoon
Gas Store
Container Store
IN
Attenuation
Lagoon
Vehicle Parking
Area
Manoeuvring Apron
Car and Van Parking
Car and Van Parking
Construction
Laydown and
Car Park
Overflow Area
IN
OU
T
Directions
gantry
GIVE
WAY
GIV
E
WA
Y
BY PASS
BY PASS
Pipe Bridge
OUT
G
IV
E
W
A
Y
GIVE
WAY
GIV
E
WA
Y
DistrictHeatingCentre
RESERVED SPACES
UKPN
HeatingStorage
1 2
43
C.L 22.630
I.L 20.746
F13
SEPTIC TANK
Revision
Approved
Frame Dimensions mm
(A0) 1139 x 791
Drawn Checked
Dwg Title
Scale
Dwg No.
Project
Date
Client
17/02/20
Issue Details Dwn App'dChd
FIRST ISSUE
P0
SR JR JR
Cromford Mills, Mill Lane, Matlock, Derbyshire DE4 3RQt: +44(0)1773 829 988 f: +44(0)1773 829 393 e: [email protected]
SCALE 1:250
5 4 3 2 1
5 10 15 20 25m0
(A0)
London
Kent
Derbyshire
Manchester
Stirling
N
SHEET 3 OF 4
INDICATIVE DRAINAGE GA
ALLINGTON EXTENSION
FCC
100509-01-DR-C-503 P0
February 2020
SR JR JR
1:250
Notes
1. The purpose of this drawing is to illustrate the proposed
drainage networks at the Allington recycling plant.
2. The existing drainage shown is based on as built
information provided by FCC.
3. This drawing is to be read in conjunction with IDOM
Merebrook drawings 100509-00-DR-C-0500 0501 0502
0503 0504 and 100509-01-DR-C-0500 0501 0502 0504.
SHEET LAYOUT, SCALE 1:12500
PRELIMINARY
COMMENT
TENDER
CONSTRUCTION
ISSUE PURPOSE
INFORMATION
06/03/20
AMENDMENTS FOLLOWING CLIENT COMMENTS
P1
SR JR JR
S
T
L
A
U
R
E
N
C
E
A
V
E
N
U
E
Coach
Visitor
Car Park
Container Store
IN
OU
T
Directions
gantry
GIVE
WAY
BY PASS
BY PASS
G
I
V
E
W
A
Y
S110
S20
S101
S19
S1
S18
S18.1
S100
S10
S6
S115
S9
S114
S113
S9.1
S112
S111
S8
S8.1
S17
3
0
0
Ø
G
R
A
D
1
I
N
8
2
8
.
0
0
0
300Ø GRAD 1 IN 101 8.001
375Ø GRAD 1 IN 142 8.002
3
7
5
Ø
G
R
A
D
1
IN
3
2
3
8
.0
0
3
S200
CL 22.800
IL 20.500
S201
CL 21.200
IL 19.700
S202
CL 20.500
IL 18.925
S203
CL 20.000
IL 18.425
60
0Ø
G
RA
D 1
IN
6
00
1
4.0
00
S233
CL 16.000
IL 14.768
4
5
0
Ø
G
R
A
D
1
I
N
1
7
1
.
0
0
0
4
5
0
Ø
G
R
A
D
1
I
N
4
0
6
1
.
0
0
1
525Ø GRAD 1 IN 492 1.002
525Ø GRAD 1 IN 150 1.003
S400
CL 23.750
IL 22.100
S401
CL 21.000
IL 19.350
S402
CL 21.300
IL 19.158
S403
CL 21.200
IL 18.993
KEY
EXISTING SW DRAINAGE
EXISTING TO BE ABANDONED
PROPOSED SW DRAINAGE
PROPOSED ROOF/GROUND WATER
DRAINAGE
S
T
L
A
U
R
E
N
C
E
A
V
E
N
U
E
Fuel
Oil
S
ta
ff C
a
r P
a
rk
Coach
Visitor
Car Park
Attenuation
Lagoon
Gas Store
Container Store
IN
Attenuation
Lagoon
Vehicle Parking
Area
Manoeuvring Apron
Car and Van Parking
Car and Van Parking
Construction
Laydown and
Car Park
Overflow Area
IN
OU
T
Directions
gantry
GIVE
WAY
GIV
E
WA
Y
BY PASS
BY PASS
Pipe Bridge
OUT
G
IV
E
W
A
Y
GIVE
WAY
GIV
E
WA
Y
DistrictHeatingCentre
RESERVED SPACES
UKPN
HeatingStorage
1 2
43
C.L 22.630
I.L 20.746
F13
SEPTIC TANK
Revision
Approved
Frame Dimensions mm
(A0) 1139 x 791
Drawn Checked
Dwg Title
Scale
Dwg No.
Project
Date
Client
17/02/20
Issue Details Dwn App'dChd
First issue
P0
SR JR JR
Cromford Mills, Mill Lane, Matlock, Derbyshire DE4 3RQt: +44(0)1773 829 988 f: +44(0)1773 829 393 e: [email protected]
SCALE 1:250
5 4 3 2 1
5 10 15 20 25m0
(A0)
London
Kent
Derbyshire
Manchester
Stirling
N
SHEET 4 OF 4
INDICATIVE DRAINAGE GA
ALLINGTON EXTENSION
FCC
100509-01-DR-C-504 P0
February 2020
SR JR JR
1:250
Notes
1. The purpose of this drawing is to illustrate the proposed
drainage networks at the Allington recycling plant.
2. The existing drainage shown is based on as built
information provided by FCC.
3. This drawing is to be read in conjunction with IDOM
Merebrook drawings 100509-00-DR-C-0500 0501 0502
0503 0504 and 100509-01-DR-C-0500 0501 0502 0503.
SHEET LAYOUT, SCALE 1:12500
PRELIMINARY
COMMENT
TENDER
CONSTRUCTION
ISSUE PURPOSE
INFORMATION
06/03/20
AMENDMENTS FOLLOWING CLIENT COMMENTS
P1
SR JR JR
ALLINGTON EXTENSION, ALLINGTON
DRAINAGE REPORT
Produced by IDOM Reference : 100509-XX-RP-D-501, June 2020 For FCC
APPENDIX 4 ▪ Proposed Drainage Network 1 - Hydraulic Calculations (Surface)
▪ Proposed Drainage Network 2 - Hydraulic Calculations (Roof & Land)
▪ Proposed Drainage Network 3 - Hydraulic Calculations (Land)
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 1
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Design Se ngs
Rainfall MethodologyReturn Period (years)
Addi onal Flow (%)FSR Region
M5-60 (mm)Ra o-R
CVTime of Entry (mins)
FSR10England and Wales20.0000.4000.7505.00
Maximum Time of Concentra on (mins)Maximum Rainfall (mm/hr)
Minimum Velocity (m/s)Connec on Type
Minimum Backdrop Height (m)Preferred Cover Depth (m)
Include Intermediate GroundEnforce best prac ce design rules
30.0050.01.00Level So ts0.2001.200✓✓
Nodes
Name Area(ha)
T of E(mins)
CoverLevel(m)
Diameter(mm)
Eas ng(m)
Northing(m)
Depth(m)
8.189.191011.11112151323200201202203204205206207220208209210211212221222226227228223224225229232230231213214215233
0.1490.3340.0720.1470.1650.1100.2270.1010.1720.2270.1220.1660.0900.0870.0260.0170.0970.0260.0660.3330.0700.2200.1280.0470.0000.5090.0000.2860.2440.0350.0000.0000.0000.1170.0970.0000.0000.3820.0000.0000.301
5.005.005.005.005.005.005.005.005.005.005.005.005.005.005.005.005.005.005.005.005.005.005.005.00
5.00
5.005.005.00
5.005.00
5.00
5.00
22.77521.19520.50020.36520.30517.75016.98515.60015.85015.70015.70022.80021.20020.50020.00020.00020.00018.00018.00018.00018.00018.00016.00016.00016.00018.00018.00018.00018.00018.00018.00018.00016.00016.00016.00016.00016.00016.00016.70016.65016.000
12001200120012001200120012001200120012001200120012001350135013501350135015001350150015001500150015001200120012001200120013501350135013501350135013501500150015001200
573964.128573903.757573783.104573815.762573793.734573793.282573792.915573792.104573813.784573848.269573883.275573969.788573908.237573837.463573766.689573751.390573743.186573742.665573730.685573693.541573689.580573648.475573647.807573644.436573638.682573585.352573584.540573617.829573605.759573604.037573583.878573583.728573589.735573656.168573662.313573655.552573642.823573641.617573666.836573714.010573767.873
157747.966157722.740157724.594157724.594157768.618157812.850157841.173157921.291157921.407157959.993157963.079157726.203157702.737157702.509157702.280157704.694157712.111157760.520157769.158157798.675157769.696157770.234157860.231157901.090157921.489157769.158157842.813157790.015157829.998157901.897157901.670157915.009157924.339157924.128157974.925157958.914157958.857157972.464157979.832157979.437157765.741
1.1251.4201.7101.8352.4151.6402.2201.5002.1501.2751.4202.3001.5001.5751.5751.6231.7331.7251.7621.3501.8631.9471.2671.3381.3751.6501.8311.6501.7531.9302.1303.0191.2661.1031.1411.1801.2081.5382.2772.2971.232
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 2
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Nodes
Name Area(ha)
T of E(mins)
CoverLevel(m)
Diameter(mm)
Eas ng(m)
Northing(m)
Depth(m)
2342402412352362372422432382392162172182192424.1192018.1171821221001011021031042.32.42523.423.323.2Pump inPond
0.1290.3210.0000.1670.1530.0000.1620.0000.0000.0000.0000.0000.0000.0000.0250.0000.1650.0920.1340.0570.1280.0660.0160.0740.3270.1170.3840.0090.0610.0370.0020.0060.0070.0030.179
5.005.00
5.005.00
5.00
5.00
5.005.005.005.005.005.005.00
20.0020.0020.0020.0020.00
5.005.005.005.005.005.005.00
16.00016.00016.00016.00016.00016.00016.00016.00016.00016.00016.80018.00017.35016.00015.72015.67021.18020.27021.96423.80020.50018.01016.00020.00020.00020.00018.00017.00015.76015.72515.69015.70015.81116.00016.00016.295
120012001200135013501350120012001500150015001500210012001200120012001200120012001200120012001200120012001200120012001200120012001200120012001200
573767.873573752.098573752.098573767.737573768.301573768.301573710.243573758.173573769.883573779.259573783.986573854.324573924.661573924.808573906.698573907.143573963.016573955.216573931.297573985.663573922.846573922.279573907.699574013.128573996.117573987.190573975.229573966.416573955.983573907.143573907.143573911.410573911.521573927.811573941.443573941.705
157826.351157826.351157886.305157886.305157921.824157966.422157974.668157974.410157973.841157974.039157979.360157979.360157979.360157965.830157963.318157922.805157782.339157805.877157745.584157763.323157762.521157824.029157850.640157771.795157783.189157824.817157833.208157871.639157869.600157862.434157912.610157912.581157920.740157921.131157925.902157942.505
1.3331.3071.4071.4331.4921.5661.2961.4031.7291.7422.5513.8853.3392.0341.6602.1701.5801.0700.9401.6001.4601.5802.2850.8001.2572.8241.4332.0701.3512.0402.3152.3502.5102.9503.0003.509
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 3
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Links
Name USNode
DSNode
Length(m)
ks (mm) /n
US IL(m)
DS IL(m)
Fall(m)
Slope(1:X)
Dia(mm)
T of C(mins)
Rain(mm/hr)
Name Vel(m/s)
Cap(l/s)
Flow(l/s)
USDepth
(m)
DSDepth
(m)
Σ Area(ha)
Σ AddIn ow
(l/s)
1.000 8.1 8 65.430 0.600 21.650 19.924 1.726 37.9 225 6.18 49.7
1.000 2.131 84.7 20.1 0.900 1.046 0.149 0.0
1.001 8 9 88.015 0.600 19.775 18.530 1.245 70.7 375 7.57 44.9
1.001 2.157 238.2 58.8 1.045 1.460 0.483 0.0
2.000 9.1 9 32.657 0.600 18.790 18.680 0.110 296.9 225 5.25 50.0
2.000 0.753 30.0 9.8 1.485 1.460 0.072 0.0
1.002 9 10 49.228 0.600 18.530 17.890 0.640 76.9 375 8.38 42.6
1.002 2.067 228.3 81.1 1.460 2.040 0.702 0.0
1.003 10 11.1 44.234 0.600 17.890 16.114 1.776 24.9 375 9.12 40.7
1.003 3.643 402.3 95.6 2.040 1.261 0.867 0.0
1.004 11.1 11 28.326 0.600 16.110 14.786 1.324 21.4 375 9.60 39.7
1.004 3.932 434.2 105.1 1.265 1.824 0.977 0.0
1.005 11 12 80.122 0.600 14.765 14.100 0.665 120.5 450 10.93 37.0
1.005 1.851 294.3 120.7 1.770 1.050 1.204 0.0
1.006 12 15 21.680 0.600 14.100 13.850 0.250 86.7 450 11.30 36.4
1.006 2.184 347.3 128.8 1.050 1.550 1.305 0.0
1.007 15 24.1 93.370 0.600 13.700 13.500 0.200 466.9 600 12.85 33.9
1.007 1.120 316.7 135.7 1.550 1.570 1.477 0.0
6.000 13 23 35.141 0.600 14.425 14.280 0.145 242.4 225 5.58 50.0
6.000 0.835 33.2 30.8 1.050 1.195 0.227 0.0
6.001 23 24 23.425 0.600 14.280 14.135 0.145 161.6 225 5.98 50.0
6.001 1.026 40.8 47.3 1.195 1.360 0.349 0.0
8.000 200 201 65.872 0.600 20.500 19.700 0.800 82.3 300 6.10 50.0
8.000 1.734 122.5 22.5 2.000 1.200 0.166 0.0
8.001 201 202 70.774 0.600 19.700 19.000 0.700 101.1 300 7.28 45.8
8.001 1.563 110.5 31.8 1.200 1.200 0.256 0.0
8.002 202 203 70.774 0.600 18.925 18.425 0.500 141.5 375 8.45 42.4
8.002 1.521 167.9 39.4 1.200 1.200 0.343 0.0
8.003 203 204 15.488 0.600 18.425 18.377 0.048 322.7 375 8.71 41.7
8.003 1.003 110.8 41.7 1.200 1.248 0.369 0.0
8.004 204 205 11.060 0.600 18.377 18.342 0.035 316.0 375 8.89 41.3
8.004 1.014 111.9 43.2 1.248 1.283 0.386 0.0
8.005 205 206 48.412 0.600 18.267 16.353 1.914 25.3 450 9.70 39.5
8.005 4.054 644.8 51.7 1.283 1.197 0.483 0.0
8.006 206 207 14.769 0.600 16.275 16.238 0.037 399.2 525 9.94 39.0
8.006 1.115 241.3 53.8 1.200 1.237 0.509 0.0
8.007 207 208 41.109 0.600 16.238 16.137 0.101 407.0 525 10.62 37.6
8.007 1.104 238.9 58.6 1.237 1.338 0.575 0.0
9.000 220 208 29.248 0.600 16.650 16.287 0.363 80.6 375 5.24 50.0
9.000 2.019 223.0 45.1 0.975 1.338 0.333 0.0
8.008 208 209 41.109 0.600 16.137 16.053 0.084 489.4 525 11.30 36.4
8.008 1.006 217.7 96.5 1.338 1.422 0.978 0.0
8.009 209 210 89.999 0.600 16.053 14.883 1.170 76.9 525 11.89 35.4
8.009 2.556 553.3 115.0 1.422 0.592 1.198 0.0
8.010 210 211 40.998 0.600 14.733 14.662 0.071 577.4 675 12.57 34.3
8.010 1.083 387.6 123.3 0.592 0.663 1.326 0.0
8.011 211 212 21.195 0.600 14.662 14.625 0.037 572.8 675 12.92 33.8
8.011 1.088 389.2 125.8 0.663 0.700 1.373 0.0
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 4
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Links
Name USNode
DSNode
Length(m)
ks (mm) /n
US IL(m)
DS IL(m)
Fall(m)
Slope(1:X)
Dia(mm)
T of C(mins)
Rain(mm/hr)
Name Vel(m/s)
Cap(l/s)
Flow(l/s)
USDepth
(m)
DSDepth
(m)
Σ Area(ha)
Σ AddIn ow
(l/s)
8.012 212 213 51.059 0.600 14.625 14.537 0.088 580.2 675 13.77 32.6
8.012 1.081 386.7 121.3 0.700 0.788 1.373 0.0
10.000 221 222 73.659 0.600 16.350 16.169 0.181 407.0 450 6.23 49.5
10.000 1.001 159.2 68.3 1.200 1.381 0.509 0.0
10.001 222 223 58.861 0.600 16.169 16.020 0.149 395.0 450 7.07 46.5
10.001 1.017 161.7 64.2 1.381 1.530 0.509 0.0
11.000 226 227 41.765 0.600 16.350 16.247 0.103 405.5 450 5.70 50.0
11.000 1.003 159.5 38.8 1.200 1.303 0.286 0.0
11.001 227 228 71.920 0.600 16.247 16.070 0.177 406.3 450 6.89 47.1
11.001 1.002 159.4 67.7 1.303 1.480 0.530 0.0
11.002 228 223 20.160 0.600 16.070 16.020 0.050 403.2 450 7.23 46.0
11.002 1.006 160.0 70.4 1.480 1.530 0.565 0.0
10.002 223 224 13.340 0.600 15.870 14.981 0.889 15.0 600 7.45 45.3
10.002 6.308 1783.4 131.9 1.530 2.419 1.074 0.0
10.003 224 225 11.097 0.600 14.981 14.734 0.247 44.9 600 7.48 45.2
10.003 3.640 1029.2 131.6 2.419 0.666 1.074 0.0
10.004 225 213 70.766 0.600 14.734 14.612 0.122 580.0 600 8.66 41.9
10.004 1.004 283.8 122.0 0.666 0.788 1.074 0.0
12.000 229 230 34.791 0.600 14.897 14.820 0.077 451.8 450 5.61 50.0
12.000 0.950 151.0 15.9 0.653 0.730 0.117 0.0
13.000 232 230 17.380 0.600 14.859 14.820 0.039 445.6 450 5.30 50.0
13.000 0.956 152.1 13.1 0.691 0.730 0.097 0.0
12.001 230 231 12.729 0.600 14.820 14.792 0.028 454.6 450 5.83 50.0
12.001 0.947 150.6 29.0 0.730 0.758 0.214 0.0
12.002 231 213 13.660 0.600 14.792 14.762 0.030 455.3 450 6.08 50.0
12.002 0.946 150.5 29.0 0.758 0.788 0.214 0.0
8.013 213 214 26.273 0.600 14.462 14.423 0.039 673.7 750 14.20 32.0
8.013 1.070 472.9 263.9 0.788 1.527 3.043 0.0
8.014 214 215 47.176 0.600 14.423 14.353 0.070 673.9 750 14.99 31.0
8.014 1.070 472.8 255.7 1.527 1.547 3.043 0.0
8.015 215 216 69.976 0.600 14.353 14.249 0.104 672.8 750 16.15 29.7
8.015 1.071 473.2 245.0 1.547 1.801 3.043 0.0
14.000 233 234 60.610 0.600 14.768 14.667 0.101 600.1 600 5.90 50.0
14.000 0.987 278.9 40.8 0.632 0.733 0.301 0.0
14.001 234 235 59.954 0.600 14.667 14.567 0.100 599.5 600 6.90 47.1
14.001 0.987 279.1 54.9 0.733 0.833 0.430 0.0
15.000 240 241 59.954 0.600 14.693 14.593 0.100 599.5 600 5.98 50.0
15.000 0.987 279.1 43.5 0.707 0.807 0.321 0.0
15.001 241 235 15.639 0.600 14.593 14.567 0.026 601.5 600 6.25 49.4
15.001 0.985 278.6 43.0 0.807 0.833 0.321 0.0
14.002 235 236 35.523 0.600 14.567 14.508 0.059 602.1 600 7.49 45.2
14.002 0.985 278.5 112.5 0.833 0.892 0.918 0.0
14.003 236 237 44.598 0.600 14.508 14.434 0.074 602.7 600 8.23 43.0
14.003 0.984 278.3 124.8 0.892 0.966 1.071 0.0
14.004 237 238 7.586 0.600 14.434 14.421 0.013 583.5 600 8.29 42.9
14.004 1.001 282.9 124.5 0.966 0.979 1.071 0.0
16.000 242 243 47.931 0.600 14.704 14.597 0.107 448.0 450 5.84 50.0
16.000 0.954 151.7 22.0 0.846 0.953 0.162 0.0
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 5
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Links
Name USNode
DSNode
Length(m)
ks (mm) /n
US IL(m)
DS IL(m)
Fall(m)
Slope(1:X)
Dia(mm)
T of C(mins)
Rain(mm/hr)
Name Vel(m/s)
Cap(l/s)
Flow(l/s)
USDepth
(m)
DSDepth
(m)
Σ Area(ha)
Σ AddIn ow
(l/s)
16.001 243 238 11.724 0.600 14.597 14.571 0.026 450.9 450 7.65 44.7
16.001 0.951 151.2 19.6 0.953 0.979 0.162 0.0
12.005 238 239 9.378 0.600 14.271 14.258 0.013 721.4 750 8.44 42.4
12.005 1.034 456.8 141.7 0.979 0.992 1.233 0.0
12.006 239 216 7.117 0.600 14.258 14.249 0.009 790.8 750 8.56 42.1
12.006 0.987 436.0 140.7 0.992 1.801 1.233 0.0
8.016 216 217 90.178 0.600 14.249 14.115 0.134 673.0 750 17.65 28.1
8.016 1.071 473.1 325.7 1.801 3.135 4.276 0.0
8.017 217 218 70.337 0.600 14.115 14.011 0.104 675.0 750 18.75 27.1
8.017 1.069 472.4 314.1 3.135 2.589 4.276 0.0
8.018 218 219 13.531 0.600 14.011 13.966 0.045 300.0 300 19.00 26.9
8.018 0.902 63.8 311.8 3.039 1.734 4.276 0.0
8.019 219 Pump in 43.255 0.600 13.966 13.820 0.146 296.3 300 19.79 26.2
8.019 0.908 64.2 303.7 1.734 1.880 4.276 0.0
6.002 24 24.1 40.516 0.600 14.060 13.800 0.260 155.8 300 6.65 47.9
6.002 1.257 88.8 48.6 1.360 1.570 0.374 0.0
1.008 24.1 25 10.195 0.600 13.500 13.375 0.125 81.6 600 13.02 33.6
1.008 2.698 762.7 168.6 1.570 1.715 1.851 0.0
3.000 19 20 24.797 0.600 19.600 19.200 0.400 62.0 225 5.25 50.0
3.000 1.664 66.1 22.4 1.355 0.845 0.165 0.0
3.001 20 21 37.608 0.600 19.200 16.659 2.541 14.8 225 5.42 50.0
3.001 3.418 135.9 34.8 0.845 1.126 0.257 0.0
4.000 18.1 18 18.928 0.600 21.024 19.112 1.912 9.9 150 5.17 50.0
4.000 3.221 56.9 18.2 0.790 1.238 0.134 0.0
7.000 17 18 62.822 0.600 22.200 19.136 3.064 20.5 225 5.34 50.0
7.000 2.902 115.4 7.7 1.375 1.139 0.057 0.0
4.001 18 21 61.511 0.600 19.040 16.656 2.384 25.8 225 6.36 49.0
4.001 2.586 102.8 42.4 1.235 1.129 0.319 0.0
3.002 21 22 30.343 0.600 16.430 13.721 2.709 11.2 450 6.04 50.0
3.002 6.100 970.1 87.0 1.130 1.829 0.642 0.0
3.003 22 2.4 11.807 0.600 13.715 13.685 0.030 393.6 450 6.06 50.0
3.003 1.018 162.0 89.2 1.835 1.590 0.658 0.0
5.000 100 101 20.474 0.600 19.200 18.743 0.457 44.8 150 5.41 50.0
5.000 1.507 26.6 10.0 0.650 1.107 0.074 0.0
5.001 101 102 42.575 0.600 18.743 17.178 1.565 27.2 150 5.80 50.0
5.001 1.938 34.2 54.3 1.107 2.672 0.401 0.0
5.002 102 103 14.611 0.600 17.176 16.567 0.609 24.0 150 6.04 50.0
5.002 2.064 36.5 70.2 2.674 1.283 0.518 0.0
5.003 103 104 39.428 0.600 16.567 14.931 1.636 24.1 150 6.68 47.8
5.003 2.059 36.4 116.9 1.283 1.919 0.902 0.0
5.004 104 2.3 10.630 0.600 14.930 14.409 0.521 20.4 150 6.86 47.2
5.004 2.239 39.6 116.5 1.920 1.201 0.911 0.0
5.005 2.3 2.4 49.363 0.600 14.410 13.685 0.725 68.1 375 7.68 44.6
5.005 2.198 242.8 117.5 0.975 1.665 0.972 0.0
3.004 2.4 25 50.176 0.600 13.685 13.375 0.310 161.9 450 8.53 42.2
3.004 1.595 253.7 190.7 1.590 1.865 1.667 0.0
1.009 25 23.4 4.267 0.600 13.375 13.350 0.025 170.7 600 13.09 33.5
1.009 1.861 526.1 319.6 1.715 1.750 3.520 0.0
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 6
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Links
Name USNode
DSNode
Length(m)
ks (mm) /n
US IL(m)
DS IL(m)
Fall(m)
Slope(1:X)
Dia(mm)
T of C(mins)
Rain(mm/hr)
Name Vel(m/s)
Cap(l/s)
Flow(l/s)
USDepth
(m)
DSDepth
(m)
Σ Area(ha)
Σ AddIn ow
(l/s)
1.010 23.4 23.3 8.160 0.600 13.350 13.301 0.049 166.5 600 13.22 33.3
1.010 1.884 532.7 318.3 1.750 1.910 3.526 0.0
1.011 23.3 23.2 16.295 0.600 13.301 13.050 0.251 64.9 600 13.50 32.9
1.011 3.025 855.3 315.1 1.910 2.350 3.533 0.0
1.012 23.2 Pump in 14.443 0.600 13.050 13.000 0.050 288.9 600 13.74 32.6
1.012 1.427 403.6 312.4 2.350 2.400 3.536 0.0
1.013 Pump in Pond 16.605 0.600 13.000 12.786 0.214 77.6 600 14.09 32.1
1.013 2.766 782.1 695.3 2.400 2.909 7.991 0.0
Pipeline Schedule
Link Length(m)
Slope(1:X)
Dia(mm)
LinkType
US CL(m)
US IL(m)
US Depth(m)
DS CL(m)
DS IL(m)
DS Depth(m)
Link USNode
Dia(mm)
NodeType
MHType
DSNode
Dia(mm)
NodeType
MHType
1.000 65.430 37.9 225 Circular_Default Sewer Type 22.775 21.650 0.900 21.195 19.924 1.046
1.000 8.1 1200 Manhole Adoptable 8 1200 Manhole Adoptable
1.001 88.015 70.7 375 Circular_Default Sewer Type 21.195 19.775 1.045 20.365 18.530 1.460
1.001 8 1200 Manhole Adoptable 9 1200 Manhole Adoptable
2.000 32.657 296.9 225 Circular_Default Sewer Type 20.500 18.790 1.485 20.365 18.680 1.460
2.000 9.1 1200 Manhole Adoptable 9 1200 Manhole Adoptable
1.002 49.228 76.9 375 Circular_Default Sewer Type 20.365 18.530 1.460 20.305 17.890 2.040
1.002 9 1200 Manhole Adoptable 10 1200 Manhole Adoptable
1.003 44.234 24.9 375 Circular_Default Sewer Type 20.305 17.890 2.040 17.750 16.114 1.261
1.003 10 1200 Manhole Adoptable 11.1 1200 Manhole Adoptable
1.004 28.326 21.4 375 Circular_Default Sewer Type 17.750 16.110 1.265 16.985 14.786 1.824
1.004 11.1 1200 Manhole Adoptable 11 1200 Manhole Adoptable
1.005 80.122 120.5 450 Circular_Default Sewer Type 16.985 14.765 1.770 15.600 14.100 1.050
1.005 11 1200 Manhole Adoptable 12 1200 Manhole Adoptable
1.006 21.680 86.7 450 Circular_Default Sewer Type 15.600 14.100 1.050 15.850 13.850 1.550
1.006 12 1200 Manhole Adoptable 15 1200 Manhole Adoptable
1.007 93.370 466.9 600 Circular_Default Sewer Type 15.850 13.700 1.550 15.670 13.500 1.570
1.007 15 1200 Manhole Adoptable 24.1 1200 Manhole Adoptable
6.000 35.141 242.4 225 Circular_Default Sewer Type 15.700 14.425 1.050 15.700 14.280 1.195
6.000 13 1200 Manhole Adoptable 23 1200 Manhole Adoptable
6.001 23.425 161.6 225 Circular_Default Sewer Type 15.700 14.280 1.195 15.720 14.135 1.360
6.001 23 1200 Manhole Adoptable 24 1200 Manhole Adoptable
8.000 65.872 82.3 300 Circular_Default Sewer Type 22.800 20.500 2.000 21.200 19.700 1.200
8.000 200 1200 Manhole Adoptable 201 1200 Manhole Adoptable
8.001 70.774 101.1 300 Circular_Default Sewer Type 21.200 19.700 1.200 20.500 19.000 1.200
8.001 201 1200 Manhole Adoptable 202 1350 Manhole Adoptable
8.002 70.774 141.5 375 Circular_Default Sewer Type 20.500 18.925 1.200 20.000 18.425 1.200
8.002 202 1350 Manhole Adoptable 203 1350 Manhole Adoptable
8.003 15.488 322.7 375 Circular_Default Sewer Type 20.000 18.425 1.200 20.000 18.377 1.248
8.003 203 1350 Manhole Adoptable 204 1350 Manhole Adoptable
8.004 11.060 316.0 375 Circular_Default Sewer Type 20.000 18.377 1.248 20.000 18.342 1.283
8.004 204 1350 Manhole Adoptable 205 1350 Manhole Adoptable
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 7
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Pipeline Schedule
Link Length(m)
Slope(1:X)
Dia(mm)
LinkType
US CL(m)
US IL(m)
US Depth(m)
DS CL(m)
DS IL(m)
DS Depth(m)
Link USNode
Dia(mm)
NodeType
MHType
DSNode
Dia(mm)
NodeType
MHType
8.005 48.412 25.3 450 Circular_Default Sewer Type 20.000 18.267 1.283 18.000 16.353 1.197
8.005 205 1350 Manhole Adoptable 206 1350 Manhole Adoptable
8.006 14.769 399.2 525 Circular_Default Sewer Type 18.000 16.275 1.200 18.000 16.238 1.237
8.006 206 1350 Manhole Adoptable 207 1500 Manhole Adoptable
8.007 41.109 407.0 525 Circular_Default Sewer Type 18.000 16.238 1.237 18.000 16.137 1.338
8.007 207 1500 Manhole Adoptable 208 1500 Manhole Adoptable
9.000 29.248 80.6 375 Circular_Default Sewer Type 18.000 16.650 0.975 18.000 16.287 1.338
9.000 220 1350 Manhole Adoptable 208 1500 Manhole Adoptable
8.008 41.109 489.4 525 Circular_Default Sewer Type 18.000 16.137 1.338 18.000 16.053 1.422
8.008 208 1500 Manhole Adoptable 209 1500 Manhole Adoptable
8.009 89.999 76.9 525 Circular_Default Sewer Type 18.000 16.053 1.422 16.000 14.883 0.592
8.009 209 1500 Manhole Adoptable 210 1500 Manhole Adoptable
8.010 40.998 577.4 675 Circular_Default Sewer Type 16.000 14.733 0.592 16.000 14.662 0.663
8.010 210 1500 Manhole Adoptable 211 1500 Manhole Adoptable
8.011 21.195 572.8 675 Circular_Default Sewer Type 16.000 14.662 0.663 16.000 14.625 0.700
8.011 211 1500 Manhole Adoptable 212 1500 Manhole Adoptable
8.012 51.059 580.2 675 Circular_Default Sewer Type 16.000 14.625 0.700 16.000 14.537 0.788
8.012 212 1500 Manhole Adoptable 213 1500 Manhole Adoptable
10.000 73.659 407.0 450 Circular_Default Sewer Type 18.000 16.350 1.200 18.000 16.169 1.381
10.000 221 1200 Manhole Adoptable 222 1200 Manhole Adoptable
10.001 58.861 395.0 450 Circular_Default Sewer Type 18.000 16.169 1.381 18.000 16.020 1.530
10.001 222 1200 Manhole Adoptable 223 1350 Manhole Adoptable
11.000 41.765 405.5 450 Circular_Default Sewer Type 18.000 16.350 1.200 18.000 16.247 1.303
11.000 226 1200 Manhole Adoptable 227 1200 Manhole Adoptable
11.001 71.920 406.3 450 Circular_Default Sewer Type 18.000 16.247 1.303 18.000 16.070 1.480
11.001 227 1200 Manhole Adoptable 228 1200 Manhole Adoptable
11.002 20.160 403.2 450 Circular_Default Sewer Type 18.000 16.070 1.480 18.000 16.020 1.530
11.002 228 1200 Manhole Adoptable 223 1350 Manhole Adoptable
10.002 13.340 15.0 600 Circular_Default Sewer Type 18.000 15.870 1.530 18.000 14.981 2.419
10.002 223 1350 Manhole Adoptable 224 1350 Manhole Adoptable
10.003 11.097 44.9 600 Circular_Default Sewer Type 18.000 14.981 2.419 16.000 14.734 0.666
10.003 224 1350 Manhole Adoptable 225 1350 Manhole Adoptable
10.004 70.766 580.0 600 Circular_Default Sewer Type 16.000 14.734 0.666 16.000 14.612 0.788
10.004 225 1350 Manhole Adoptable 213 1500 Manhole Adoptable
12.000 34.791 451.8 450 Circular_Default Sewer Type 16.000 14.897 0.653 16.000 14.820 0.730
12.000 229 1350 Manhole Adoptable 230 1350 Manhole Adoptable
13.000 17.380 445.6 450 Circular_Default Sewer Type 16.000 14.859 0.691 16.000 14.820 0.730
13.000 232 1350 Manhole Adoptable 230 1350 Manhole Adoptable
12.001 12.729 454.6 450 Circular_Default Sewer Type 16.000 14.820 0.730 16.000 14.792 0.758
12.001 230 1350 Manhole Adoptable 231 1350 Manhole Adoptable
12.002 13.660 455.3 450 Circular_Default Sewer Type 16.000 14.792 0.758 16.000 14.762 0.788
12.002 231 1350 Manhole Adoptable 213 1500 Manhole Adoptable
8.013 26.273 673.7 750 Circular_Default Sewer Type 16.000 14.462 0.788 16.700 14.423 1.527
8.013 213 1500 Manhole Adoptable 214 1500 Manhole Adoptable
8.014 47.176 673.9 750 Circular_Default Sewer Type 16.700 14.423 1.527 16.650 14.353 1.547
8.014 214 1500 Manhole Adoptable 215 1500 Manhole Adoptable
8.015 69.976 672.8 750 Circular_Default Sewer Type 16.650 14.353 1.547 16.800 14.249 1.801
8.015 215 1500 Manhole Adoptable 216 1500 Manhole Adoptable
14.000 60.610 600.1 600 Circular_Default Sewer Type 16.000 14.768 0.632 16.000 14.667 0.733
14.000 233 1200 Manhole Adoptable 234 1200 Manhole Adoptable
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 8
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Pipeline Schedule
Link Length(m)
Slope(1:X)
Dia(mm)
LinkType
US CL(m)
US IL(m)
US Depth(m)
DS CL(m)
DS IL(m)
DS Depth(m)
Link USNode
Dia(mm)
NodeType
MHType
DSNode
Dia(mm)
NodeType
MHType
14.001 59.954 599.5 600 Circular_Default Sewer Type 16.000 14.667 0.733 16.000 14.567 0.833
14.001 234 1200 Manhole Adoptable 235 1350 Manhole Adoptable
15.000 59.954 599.5 600 Circular_Default Sewer Type 16.000 14.693 0.707 16.000 14.593 0.807
15.000 240 1200 Manhole Adoptable 241 1200 Manhole Adoptable
15.001 15.639 601.5 600 Circular_Default Sewer Type 16.000 14.593 0.807 16.000 14.567 0.833
15.001 241 1200 Manhole Adoptable 235 1350 Manhole Adoptable
14.002 35.523 602.1 600 Circular_Default Sewer Type 16.000 14.567 0.833 16.000 14.508 0.892
14.002 235 1350 Manhole Adoptable 236 1350 Manhole Adoptable
14.003 44.598 602.7 600 Circular_Default Sewer Type 16.000 14.508 0.892 16.000 14.434 0.966
14.003 236 1350 Manhole Adoptable 237 1350 Manhole Adoptable
14.004 7.586 583.5 600 Circular_Default Sewer Type 16.000 14.434 0.966 16.000 14.421 0.979
14.004 237 1350 Manhole Adoptable 238 1500 Manhole Adoptable
16.000 47.931 448.0 450 Circular_Default Sewer Type 16.000 14.704 0.846 16.000 14.597 0.953
16.000 242 1200 Manhole Adoptable 243 1200 Manhole Adoptable
16.001 11.724 450.9 450 Circular_Default Sewer Type 16.000 14.597 0.953 16.000 14.571 0.979
16.001 243 1200 Manhole Adoptable 238 1500 Manhole Adoptable
12.005 9.378 721.4 750 Circular_Default Sewer Type 16.000 14.271 0.979 16.000 14.258 0.992
12.005 238 1500 Manhole Adoptable 239 1500 Manhole Adoptable
12.006 7.117 790.8 750 Circular_Default Sewer Type 16.000 14.258 0.992 16.800 14.249 1.801
12.006 239 1500 Manhole Adoptable 216 1500 Manhole Adoptable
8.016 90.178 673.0 750 Circular_Default Sewer Type 16.800 14.249 1.801 18.000 14.115 3.135
8.016 216 1500 Manhole Adoptable 217 1500 Manhole Adoptable
8.017 70.337 675.0 750 Circular_Default Sewer Type 18.000 14.115 3.135 17.350 14.011 2.589
8.017 217 1500 Manhole Adoptable 218 2100 Manhole Adoptable
8.018 13.531 300.0 300 Circular_Default Sewer Type 17.350 14.011 3.039 16.000 13.966 1.734
8.018 218 2100 Manhole Adoptable 219 1200 Manhole Adoptable
8.019 43.255 296.3 300 Circular_Default Sewer Type 16.000 13.966 1.734 16.000 13.820 1.880
8.019 219 1200 Manhole Adoptable Pump in 1200 Manhole Adoptable
6.002 40.516 155.8 300 Circular_Default Sewer Type 15.720 14.060 1.360 15.670 13.800 1.570
6.002 24 1200 Manhole Adoptable 24.1 1200 Manhole Adoptable
1.008 10.195 81.6 600 Circular_Default Sewer Type 15.670 13.500 1.570 15.690 13.375 1.715
1.008 24.1 1200 Manhole Adoptable 25 1200 Manhole Adoptable
3.000 24.797 62.0 225 Circular_Default Sewer Type 21.180 19.600 1.355 20.270 19.200 0.845
3.000 19 1200 Manhole Adoptable 20 1200 Manhole Adoptable
3.001 37.608 14.8 225 Circular_Default Sewer Type 20.270 19.200 0.845 18.010 16.659 1.126
3.001 20 1200 Manhole Adoptable 21 1200 Manhole Adoptable
4.000 18.928 9.9 150 Circular_Default Sewer Type 21.964 21.024 0.790 20.500 19.112 1.238
4.000 18.1 1200 Manhole Adoptable 18 1200 Manhole Adoptable
7.000 62.822 20.5 225 Circular_Default Sewer Type 23.800 22.200 1.375 20.500 19.136 1.139
7.000 17 1200 Manhole Adoptable 18 1200 Manhole Adoptable
4.001 61.511 25.8 225 Circular_Default Sewer Type 20.500 19.040 1.235 18.010 16.656 1.129
4.001 18 1200 Manhole Adoptable 21 1200 Manhole Adoptable
3.002 30.343 11.2 450 Circular_Default Sewer Type 18.010 16.430 1.130 16.000 13.721 1.829
3.002 21 1200 Manhole Adoptable 22 1200 Manhole Adoptable
3.003 11.807 393.6 450 Circular_Default Sewer Type 16.000 13.715 1.835 15.725 13.685 1.590
3.003 22 1200 Manhole Adoptable 2.4 1200 Manhole Adoptable
5.000 20.474 44.8 150 Circular_Default Sewer Type 20.000 19.200 0.650 20.000 18.743 1.107
5.000 100 1200 Manhole Adoptable 101 1200 Manhole Adoptable
5.001 42.575 27.2 150 Circular_Default Sewer Type 20.000 18.743 1.107 20.000 17.178 2.672
5.001 101 1200 Manhole Adoptable 102 1200 Manhole Adoptable
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 9
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Pipeline Schedule
Link Length(m)
Slope(1:X)
Dia(mm)
LinkType
US CL(m)
US IL(m)
US Depth(m)
DS CL(m)
DS IL(m)
DS Depth(m)
Link USNode
Dia(mm)
NodeType
MHType
DSNode
Dia(mm)
NodeType
MHType
5.002 14.611 24.0 150 Circular_Default Sewer Type 20.000 17.176 2.674 18.000 16.567 1.283
5.002 102 1200 Manhole Adoptable 103 1200 Manhole Adoptable
5.003 39.428 24.1 150 Circular_Default Sewer Type 18.000 16.567 1.283 17.000 14.931 1.919
5.003 103 1200 Manhole Adoptable 104 1200 Manhole Adoptable
5.004 10.630 20.4 150 Circular_Default Sewer Type 17.000 14.930 1.920 15.760 14.409 1.201
5.004 104 1200 Manhole Adoptable 2.3 1200 Manhole Adoptable
5.005 49.363 68.1 375 Circular_Default Sewer Type 15.760 14.410 0.975 15.725 13.685 1.665
5.005 2.3 1200 Manhole Adoptable 2.4 1200 Manhole Adoptable
3.004 50.176 161.9 450 Circular_Default Sewer Type 15.725 13.685 1.590 15.690 13.375 1.865
3.004 2.4 1200 Manhole Adoptable 25 1200 Manhole Adoptable
1.009 4.267 170.7 600 Circular_Default Sewer Type 15.690 13.375 1.715 15.700 13.350 1.750
1.009 25 1200 Manhole Adoptable 23.4 1200 Manhole Adoptable
1.010 8.160 166.5 600 Circular_Default Sewer Type 15.700 13.350 1.750 15.811 13.301 1.910
1.010 23.4 1200 Manhole Adoptable 23.3 1200 Manhole Adoptable
1.011 16.295 64.9 600 Circular_Default Sewer Type 15.811 13.301 1.910 16.000 13.050 2.350
1.011 23.3 1200 Manhole Adoptable 23.2 1200 Manhole Adoptable
1.012 14.443 288.9 600 Circular_Default Sewer Type 16.000 13.050 2.350 16.000 13.000 2.400
1.012 23.2 1200 Manhole Adoptable Pump in 1200 Manhole Adoptable
1.013 16.605 77.6 600 Circular_Default Sewer Type 16.000 13.000 2.400 16.295 12.786 2.909
1.013 Pump in 1200 Manhole Adoptable Pond 1200 Manhole Adoptable
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
8.1
8
9.1
9
10
11.1
573964.128
573903.757
573783.104
573815.762
573793.734
573793.282
157747.966
157722.740
157724.594
157724.594
157768.618
157812.850
22.775
21.195
20.500
20.365
20.305
17.750
1.125
1.420
1.710
1.835
2.415
1.640
1200
1200
1200
1200
1200
1200
0
10
0
1 2
0
1
0
1
0
01
0
012
01
01
0
1.0001.000
1.001
2.0002.0001.001
1.0021.002
1.0031.003
1.004
21.65019.924
19.775
18.79018.68018.530
18.53017.890
17.89016.114
16.110
225225
375
225225375
375375
375375
375
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 10
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
11
12
15
13
23
200
201
202
203
204
205
206
207
573792.915
573792.104
573813.784
573848.269
573883.275
573969.788
573908.237
573837.463
573766.689
573751.390
573743.186
573742.665
573730.685
157841.173
157921.291
157921.407
157959.993
157963.079
157726.203
157702.737
157702.509
157702.280
157704.694
157712.111
157760.520
157769.158
16.985
15.600
15.850
15.700
15.700
22.800
21.200
20.500
20.000
20.000
20.000
18.000
18.000
2.220
1.500
2.150
1.275
1.420
2.300
1.500
1.575
1.575
1.623
1.733
1.725
1.762
1200
1200
1200
1200
1200
1200
1200
1350
1350
1350
1350
1350
1500
1
0
1
0
1 0
0
1 0
0
10
10
10
1
0
1
0
1
0
1
0
1
01
01
0
01
0
01
01
01
01
01
01
01
0
1.004
1.0051.005
1.0061.006
1.007
6.0006.000
6.001
8.0008.000
8.0018.001
8.0028.002
8.0038.003
8.0048.004
8.0058.005
8.0068.006
8.007
14.786
14.76514.100
14.10013.850
13.700
14.42514.280
14.280
20.50019.700
19.70019.000
18.92518.425
18.42518.377
18.37718.342
18.26716.353
16.27516.238
16.238
375
450450
450450
600
225225
225
300300
300300
375375
375375
375375
450450
525525
525
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 11
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
220
208
209
210
211
212
221
222
226
227
228
223
224
573693.541
573689.580
573648.475
573647.807
573644.436
573638.682
573585.352
573584.540
573617.829
573605.759
573604.037
573583.878
573583.728
157798.675
157769.696
157770.234
157860.231
157901.090
157921.489
157769.158
157842.813
157790.015
157829.998
157901.897
157901.670
157915.009
18.000
18.000
18.000
16.000
16.000
16.000
18.000
18.000
18.000
18.000
18.000
18.000
18.000
1.350
1.863
1.947
1.267
1.338
1.375
1.650
1.831
1.650
1.753
1.930
2.130
3.019
1350
1500
1500
1500
1500
1500
1200
1200
1200
1200
1200
1350
1350
0
1
20
1
0
1
0
1
0
1
0
0
1
0
0
1
0
1
0
1
2
0
1
0
012
01
01
01
01
0
01
0
01
01
012
01
0
9.0009.0008.007
8.0088.008
8.0098.009
8.0108.010
8.0118.011
8.012
10.00010.000
10.001
11.00011.000
11.00111.001
11.00211.00210.001
10.00210.002
10.003
16.65016.28716.137
16.13716.053
16.05314.883
14.73314.662
14.66214.625
14.625
16.35016.169
16.169
16.35016.247
16.24716.070
16.07016.02016.020
15.87014.981
14.981
375375525
525525
525525
675675
675675
675
450450
450
450450
450450
450450450
600600
600
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 12
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
225
229
232
230
231
213
214
215
233
234
240
241
235
573589.735
573656.168
573662.313
573655.552
573642.823
573641.617
573666.836
573714.010
573767.873
573767.873
573752.098
573752.098
573767.737
157924.339
157924.128
157974.925
157958.914
157958.857
157972.464
157979.832
157979.437
157765.741
157826.351
157826.351
157886.305
157886.305
16.000
16.000
16.000
16.000
16.000
16.000
16.700
16.650
16.000
16.000
16.000
16.000
16.000
1.266
1.103
1.141
1.180
1.208
1.538
2.277
2.297
1.232
1.333
1.307
1.407
1.433
1350
1350
1350
1350
1350
1500
1500
1500
1200
1200
1200
1200
1350
1
0
0
0
1
2
0
1
0
12
3
0
10
1 0
0
1
0
0
1
0
1
2
0
1
0
0
012
01
012301
01
0
01
0
01
012
0
10.003
10.004
12.000
13.00013.00012.000
12.00112.001
12.00212.00210.0048.0128.0138.013
8.0148.014
8.015
14.00014.000
14.001
15.00015.000
15.00115.00114.001
14.002
14.734
14.734
14.897
14.85914.82014.820
14.82014.792
14.79214.76214.61214.53714.46214.423
14.42314.353
14.353
14.76814.667
14.667
14.69314.593
14.59314.56714.567
14.567
600
600
450
450450450
450450
450450600675750750
750750
750
600600
600
600600
600600600
600
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 13
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
236
237
242
243
238
239
216
217
218
219
24
24.1
19
573768.301
573768.301
573710.243
573758.173
573769.883
573779.259
573783.986
573854.324
573924.661
573924.808
573906.698
573907.143
573963.016
157921.824
157966.422
157974.668
157974.410
157973.841
157974.039
157979.360
157979.360
157979.360
157965.830
157963.318
157922.805
157782.339
16.000
16.000
16.000
16.000
16.000
16.000
16.800
18.000
17.350
16.000
15.720
15.670
21.180
1.492
1.566
1.296
1.403
1.729
1.742
2.551
3.885
3.339
2.034
1.660
2.170
1.580
1350
1350
1200
1200
1500
1500
1500
1500
2100
1200
1200
1200
1200
1
0
1
0
0
1 0
1
2
0
1
0
1
2 0
1 0
1
0
1
0
1
0
1
2
0
0
1
01
0
01
012
01
012
01
01
01
01
012
0
0
14.002
14.00314.003
14.004
16.00016.000
16.00116.00114.004
12.00512.005
12.00612.0068.015
8.0168.016
8.0178.017
8.0188.018
8.0196.001
6.0026.0021.007
1.008
3.000
14.508
14.50814.434
14.434
14.70414.597
14.59714.57114.421
14.27114.258
14.25814.24914.249
14.24914.115
14.11514.011
14.01113.966
13.96614.135
14.06013.80013.500
13.500
19.600
600
600600
600
450450
450450600
750750
750750750
750750
750750
300300
300225
300300600
600
225
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 14
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
20
18.1
17
18
21
22
100
101
102
103
104
2.3
2.4
573955.216
573931.297
573985.663
573922.846
573922.279
573907.699
574013.128
573996.117
573987.190
573975.229
573966.416
573955.983
573907.143
157805.877
157745.584
157763.323
157762.521
157824.029
157850.640
157771.795
157783.189
157824.817
157833.208
157871.639
157869.600
157862.434
20.270
21.964
23.800
20.500
18.010
16.000
20.000
20.000
20.000
18.000
17.000
15.760
15.725
1.070
0.940
1.600
1.460
1.580
2.285
0.800
1.257
2.824
1.433
2.070
1.351
2.040
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1
0
0
0
1
2
0
1
2
0
1
0
0
1
0
1
0
1
0
1
0
10
1
2
0
1
0
0
012
012
01
0
01
01
01
01
01
012
0
3.000
3.001
4.000
7.0007.0004.000
4.0014.0013.001
3.0023.002
3.003
5.0005.000
5.0015.001
5.0025.002
5.0035.003
5.0045.004
5.0055.0053.003
3.004
19.200
19.200
21.024
22.20019.13619.112
19.04016.65616.659
16.43013.721
13.715
19.20018.743
18.74317.178
17.17616.567
16.56714.931
14.93014.409
14.41013.68513.685
13.685
225
225
150
225225150
225225225
450450
450
150150
150150
150150
150150
150150
375375450
450
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 15
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
25
23.4
23.3
23.2
Pump in
Pond
573907.143
573911.410
573911.521
573927.811
573941.443
573941.705
157912.610
157912.581
157920.740
157921.131
157925.902
157942.505
15.690
15.700
15.811
16.000
16.000
16.295
2.315
2.350
2.510
2.950
3.000
3.509
1200
1200
1200
1200
1200
1200
1
2
0
1
0
1
0
10
1
2
0
1
12
01
01
01
012
01
3.0041.008
1.0091.009
1.0101.010
1.0111.011
1.0128.0191.012
1.0131.013
13.37513.375
13.37513.350
13.35013.301
13.30113.050
13.05013.82013.000
13.00012.786
450600
600600
600600
600600
600300600
600600
Simula on Se ngs
Rainfall MethodologyFSR Region
M5-60 (mm)Ra o-R
Summer CVWinter CV
Analysis Speed
FSREngland and Wales20.0000.4000.7500.840Detailed
Skip Steady StateDrain Down Time (mins)
Addi onal Storage (m³/ha)Check Discharge Rate(s)
Check Discharge Volume100 year 360 minute (m³)
✓150020.0✓✓
Storm Dura ons15 30 60 120 180 240 360 480 600 720 960 1440
Return Period(years)
Climate Change(CC %)
Addi onal Area(A %)
Addi onal Flow(Q %)
130
100
00
40
000
000
Pre-development Discharge Rate
Site MakeupGreen eld Method
Posi vely Drained Area (ha)SAAR (mm)
Soil IndexSPR
Region
Green eldIH124
10.101
Growth Factor 1 yearGrowth Factor 30 year
Growth Factor 100 yearBe erment (%)
QBarQ 1 year (l/s)
Q 30 year (l/s)
0.851.952.480
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 16
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Pre-development Discharge Rate
Q 100 year (l/s)
Pre-development Discharge Volume
Site MakeupGreen eld Method
Posi vely Drained Area (ha)Soil Index
SPRCWI
Green eldFSR/FEH
10.10
Return Period (years)Climate Change (%)
Storm Dura on (mins)Be erment (%)
PRRuno Volume (m³)
10003600
Node 218 Online Hydro-Brake® Control
Flap ValveReplaces Downstream Link
Invert Level (m)Design Depth (m)Design Flow (l/s)
x✓14.0111.58550.0
Objec veSump Available
Product NumberMin Outlet Diameter (m)
Min Node Diameter (mm)
(HE) Minimise upstream storage✓CTL-SHE-0287-5000-1585-50000.3002100
Node Pump in Online Head/Flow Control
Flap Valve x Replaces Downstream Link ✓ Invert Level (m) 13.000
Head(m)
Flow(l/s)
Head(m)
Flow(l/s)
Head(m)
Flow(l/s)
Head(m)
Flow(l/s)
0.500 80.000 1.000 90.000 2.000 100.000 3.000 100.000
Node 213 Depth/Area Storage Structure
Base Inf Coe cient (m/hr)Side Inf Coe cient (m/hr)
0.000000.00000
Safety FactorPorosity
2.01.00
Invert Level (m)Time to half empty (mins)
14.462280
Depth(m)
Area(m²)
Inf Area(m²)
Depth(m)
Area(m²)
Inf Area(m²)
0.000 1794.7 0.0 1.538 2641.4 0.0
Node Pump in Depth/Area Storage Structure
Base Inf Coe cient (m/hr)Side Inf Coe cient (m/hr)
0.000000.00000
Safety FactorPorosity
2.01.00
Invert Level (m)Time to half empty (mins)
13.820128
Depth(m)
Area(m²)
Inf Area(m²)
Depth(m)
Area(m²)
Inf Area(m²)
Depth(m)
Area(m²)
Inf Area(m²)
0.000 875.0 0.0 0.785 1075.0 0.0 1.785 1293.0 0.0
Other (defaults)
Entry Loss (manhole)Exit Loss (manhole)
0.2500.250
Entry Loss (junc on)Exit Loss (junc on)
0.0000.000
Apply Recommended LossesFlood Risk (m)
x0.300
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 17
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 1 year Cri cal Storm Dura on. Lowest mass balance: 99.36%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 8.1 11 21.726 0.076 21.0 0.2856 0.0000 OK
15 minute winter 8.1 1.000 8 20.3 1.751 0.239 0.7576
15 minute winter 8 11 19.908 0.133 67.1 0.7734 0.0000 OK
15 minute winter 8 1.001 9 65.5 1.538 0.275 3.8087
15 minute winter 9.1 11 18.881 0.091 10.2 0.1795 0.0000 OK
15 minute winter 9.1 2.000 9 9.8 0.706 0.329 0.4553
15 minute winter 9 11 18.709 0.179 95.2 0.4882 0.0000 OK
15 minute winter 9 1.002 10 95.5 2.114 0.418 2.2263
15 minute winter 10 11 18.033 0.143 117.4 0.3580 0.0000 OK
15 minute winter 10 1.003 11.1 117.0 3.121 0.291 1.6588
15 minute winter 11.1 11 16.250 0.140 131.6 0.3454 0.0000 OK
15 minute winter 11.1 1.004 11 131.5 2.498 0.303 1.4930
15 minute winter 11 11 15.008 0.243 161.6 0.7728 0.0000 OK
15 minute winter 11 1.005 12 161.2 1.821 0.548 7.0907
15 minute winter 12 12 14.350 0.250 174.6 0.6203 0.0000 OK
15 minute winter 12 1.006 15 170.1 2.051 0.490 2.1175
15 minute winter 15 13 14.146 0.446 192.6 1.2191 0.0000 OK
15 minute winter 15 1.007 24.1 179.6 1.082 0.567 23.6328
15 minute winter 13 11 14.617 0.192 32.0 0.8995 0.0000 OK
15 minute winter 13 6.000 23 29.9 0.828 0.900 1.3323
15 minute winter 23 11 14.519 0.239 47.1 0.6816 0.0000 SURCHARGED
15 minute winter 23 6.001 24 44.8 1.181 1.098 0.8583
15 minute winter 200 10 20.587 0.087 23.4 0.2237 0.0000 OK
15 minute winter 200 8.000 201 22.8 1.140 0.186 1.3726
15 minute winter 201 11 19.815 0.115 35.5 0.2691 0.0000 OK
15 minute winter 201 8.001 202 33.8 1.377 0.306 1.7387
15 minute winter 202 11 19.055 0.130 45.3 0.3300 0.0000 OK
15 minute winter 202 8.002 203 44.7 1.033 0.266 3.1442
15 minute winter 203 12 18.614 0.189 48.2 0.3322 0.0000 OK
15 minute winter 203 8.003 204 47.1 0.863 0.425 0.8444
15 minute winter 204 12 18.561 0.184 49.0 0.3012 0.0000 OK
15 minute winter 204 8.004 205 48.9 0.994 0.436 0.5438
15 minute winter 205 12 18.358 0.091 59.6 0.2327 0.0000 OK
15 minute winter 205 8.005 206 59.6 2.193 0.093 1.4611
15 minute winter 206 12 16.482 0.207 62.5 0.3585 0.0000 OK
15 minute winter 206 8.006 207 62.2 0.786 0.258 1.1683
15 minute winter 207 12 16.445 0.207 69.5 0.5218 0.0000 OK
15 minute winter 207 8.007 208 68.5 0.777 0.287 3.7825
15 minute winter 220 10 16.770 0.120 47.0 0.7662 0.0000 OK
15 minute winter 220 9.000 208 45.9 1.567 0.206 0.8586
15 minute winter 208 12 16.394 0.257 115.8 0.6462 0.0000 OK
15 minute winter 208 8.008 209 116.9 1.369 0.537 3.5210
15 minute winter 209 12 16.235 0.182 141.1 0.7338 0.0000 OK
15 minute winter 209 8.009 210 139.3 2.147 0.252 5.8488
15 minute winter 210 12 15.045 0.312 153.4 1.1834 0.0000 OK
15 minute winter 210 8.010 211 150.9 0.942 0.389 6.6656
15 minute winter 211 13 14.978 0.316 156.1 0.7808 0.0000 OK
15 minute winter 211 8.011 212 154.2 0.999 0.396 3.3229
15 minute winter 212 13 14.920 0.295 154.2 0.5207 0.0000 OK
15 minute winter 212 8.012 213 152.0 1.159 0.393 6.7371
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 18
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 1 year Cri cal Storm Dura on. Lowest mass balance: 99.36%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 221 10 16.563 0.213 71.8 1.5526 0.0000 OK
15 minute winter 221 10.000 222 70.2 1.014 0.441 5.2350
15 minute winter 222 12 16.375 0.206 70.2 0.2324 0.0000 OK
15 minute winter 222 10.001 223 66.4 1.032 0.411 3.7877
15 minute winter 226 11 16.503 0.153 40.3 0.7024 0.0000 OK
15 minute winter 226 11.000 227 38.8 0.647 0.243 2.5558
15 minute winter 227 11 16.463 0.216 73.0 0.8441 0.0000 OK
15 minute winter 227 11.001 228 71.8 0.949 0.451 5.4460
15 minute winter 228 12 16.292 0.222 76.4 0.3312 0.0000 OK
15 minute winter 228 11.002 223 74.9 1.064 0.468 1.4205
15 minute winter 223 12 15.985 0.115 141.3 0.1646 0.0000 OK
15 minute winter 223 10.002 224 141.4 2.584 0.079 0.7457
15 minute winter 224 12 15.167 0.186 141.4 0.2657 0.0000 OK
15 minute winter 224 10.003 225 140.9 1.471 0.137 1.1652
15 minute winter 225 13 15.031 0.297 140.9 0.4255 0.0000 OK
15 minute winter 225 10.004 213 138.0 1.136 0.486 8.6197
15 minute winter 229 10 14.994 0.097 16.5 0.3433 0.0000 OK
15 minute winter 229 12.000 230 15.9 0.491 0.105 1.1728
15 minute winter 232 11 14.968 0.109 13.7 0.3422 0.0000 OK
15 minute winter 232 13.000 230 12.7 0.399 0.084 0.6271
15 minute winter 230 11 14.961 0.141 28.6 0.2021 0.0000 OK
15 minute winter 230 12.001 231 28.2 0.691 0.187 0.5201
15 minute winter 231 11 14.925 0.133 28.2 0.1906 0.0000 OK
15 minute winter 231 12.002 213 27.9 0.795 0.186 0.4806
180 minute winter 213 140 14.621 0.159 104.5 293.9181 0.0000 OK
180 minute winter 213 8.013 214 37.7 0.615 0.080 1.9765
180 minute winter 214 140 14.605 0.182 37.7 0.3216 0.0000 OK
180 minute winter 214 8.014 215 36.8 0.586 0.078 4.8416
180 minute winter 215 140 14.595 0.242 36.8 0.4282 0.0000 OK
180 minute winter 215 8.015 216 37.1 0.550 0.078 11.1430
15 minute winter 233 10 14.923 0.155 42.4 0.9327 0.0000 OK
15 minute winter 233 14.000 234 42.0 0.664 0.151 3.9960
15 minute winter 234 12 14.863 0.196 59.1 0.6004 0.0000 OK
15 minute winter 234 14.001 235 50.3 0.566 0.180 6.1364
15 minute winter 240 12 14.853 0.160 45.3 0.9674 0.0000 OK
15 minute winter 240 15.000 241 43.2 0.625 0.155 5.1466
15 minute winter 241 12 14.844 0.251 43.2 0.2834 0.0000 OK
15 minute winter 241 15.001 235 35.2 0.312 0.126 1.8482
15 minute winter 235 12 14.840 0.273 107.1 1.0283 0.0000 OK
15 minute winter 235 14.002 236 101.8 0.802 0.365 4.5103
15 minute winter 236 12 14.788 0.280 118.6 0.9757 0.0000 OK
15 minute winter 236 14.003 237 116.8 0.957 0.420 5.4441
15 minute winter 237 13 14.693 0.259 116.8 0.3711 0.0000 OK
15 minute winter 237 14.004 238 116.9 1.117 0.413 0.7941
15 minute winter 242 10 14.822 0.118 22.8 0.4303 0.0000 OK
15 minute winter 242 16.000 243 22.3 0.686 0.147 1.5786
15 minute winter 243 11 14.715 0.118 22.3 0.1335 0.0000 OK
15 minute winter 243 16.001 238 22.0 0.741 0.145 0.3485
180 minute winter 238 140 14.591 0.320 42.4 0.5661 0.0000 OK
180 minute winter 238 12.005 239 42.1 0.546 0.092 1.7271
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 19
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 1 year Cri cal Storm Dura on. Lowest mass balance: 99.36%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
180 minute winter 239 140 14.591 0.333 42.1 0.5889 0.0000 OK
180 minute winter 239 12.006 216 41.5 0.571 0.095 1.3682
180 minute winter 216 140 14.591 0.342 63.8 0.6046 0.0000 OK
180 minute winter 216 8.016 217 57.9 0.569 0.122 22.0040
180 minute winter 217 140 14.588 0.473 57.9 0.8356 0.0000 OK
180 minute winter 217 8.017 218 51.5 0.386 0.109 23.0357
180 minute winter 218 140 14.586 0.575 51.5 1.9932 0.0000 SURCHARGED
180 minute winter 218 Hydro-Brake® 219 49.5
120 minute winter 219 100 14.172 0.206 49.5 0.2333 0.0000 OK
120 minute winter 219 8.019 Pump in 49.5 1.060 0.771 2.1349
15 minute winter 24 11 14.216 0.156 48.1 0.2231 0.0000 OK
15 minute winter 24 6.002 24.1 47.7 1.228 0.537 2.1228
15 minute winter 24.1 13 14.097 0.597 226.7 0.6747 0.0000 OK
15 minute winter 24.1 1.008 25 235.6 0.916 0.309 2.8701
15 minute winter 19 10 19.697 0.097 23.3 0.3127 0.0000 OK
15 minute winter 19 3.000 20 23.0 1.583 0.347 0.3604
15 minute winter 20 10 19.280 0.080 36.0 0.2287 0.0000 OK
15 minute winter 20 3.001 21 35.3 2.842 0.260 0.4676
15 minute winter 18.1 10 21.085 0.061 18.9 0.2449 0.0000 OK
15 minute winter 18.1 4.000 18 18.7 2.819 0.328 0.1253
15 minute winter 17 11 22.240 0.040 8.0 0.0731 0.0000 OK
15 minute winter 17 7.000 18 7.7 1.657 0.067 0.2937
15 minute winter 18 11 19.144 0.104 44.4 0.2993 0.0000 OK
15 minute winter 18 4.001 21 43.5 2.468 0.423 1.0846
15 minute winter 21 11 16.520 0.090 87.8 0.1772 0.0000 OK
15 minute winter 21 3.002 22 87.6 1.636 0.090 2.6682
15 minute winter 22 13 14.163 0.448 89.7 0.5694 0.0000 OK
15 minute winter 22 3.003 2.4 86.4 1.032 0.533 1.8698
30 minute winter 100 26 19.242 0.042 4.6 0.1258 0.0000 OK
30 minute winter 100 5.000 101 4.6 0.590 0.173 0.2202
30 minute winter 101 33 18.946 0.203 25.0 1.2855 0.0000 SURCHARGED
30 minute winter 101 5.001 102 24.4 1.879 0.714 0.7495
30 minute winter 102 33 18.360 1.184 31.7 2.3197 0.0000 SURCHARGED
30 minute winter 102 5.002 103 26.9 1.648 0.737 0.2572
30 minute winter 103 33 17.996 1.429 50.6 9.2712 0.0000 FLOOD RISK
30 minute winter 103 5.003 104 42.7 2.426 1.173 0.6941
30 minute winter 104 34 15.397 0.467 43.2 0.5686 0.0000 SURCHARGED
30 minute winter 104 5.004 2.3 43.1 2.567 1.088 0.1651
15 minute summer 2.3 11 14.516 0.107 44.3 0.2185 0.0000 OK
15 minute summer 2.3 5.005 2.4 43.8 0.893 0.180 3.3412
15 minute winter 2.4 13 14.155 0.470 132.8 0.7021 0.0000 SURCHARGED
15 minute winter 2.4 3.004 25 119.8 1.056 0.472 7.9501
15 minute winter 25 13 14.077 0.702 315.0 0.8054 0.0000 SURCHARGED
15 minute winter 25 1.009 23.4 315.3 1.252 0.599 1.2019
15 minute winter 23.4 13 14.036 0.686 315.8 0.8111 0.0000 SURCHARGED
15 minute winter 23.4 1.010 23.3 316.1 1.669 0.593 2.2985
60 minute winter 23.3 62 14.026 0.725 203.1 0.8603 0.0000 SURCHARGED
60 minute winter 23.3 1.011 23.2 202.8 0.981 0.237 4.5899
60 minute winter 23.2 62 14.024 0.974 203.0 1.1213 0.0000 SURCHARGED
60 minute winter 23.2 1.012 Pump in 202.8 0.720 0.502 4.0683
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 20
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 1 year Cri cal Storm Dura on. Lowest mass balance: 99.36%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
60 minute winter Pump in 63 14.024 1.024 258.0 186.1866 0.0000 SURCHARGED
60 minute winter Pump in Head/Flow Pond 90.2 835.9
15 minute summer Pond 1 12.786 0.000 88.4 0.0000 0.0000 OK
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 21
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 30 year Cri cal Storm Dura on. Lowest mass balance: 99.36%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 8.1 10 21.777 0.127 51.5 0.4802 0.0000 OK
15 minute winter 8.1 1.000 8 49.8 2.206 0.587 1.4826
15 minute winter 8 10 19.998 0.223 165.2 1.2990 0.0000 OK
15 minute winter 8 1.001 9 161.8 1.856 0.679 7.7409
15 minute winter 9.1 11 18.950 0.160 24.9 0.3160 0.0000 OK
15 minute winter 9.1 2.000 9 24.2 0.801 0.809 1.1151
15 minute winter 9 11 18.886 0.356 236.9 0.9717 0.0000 OK
15 minute winter 9 1.002 10 231.7 2.497 1.015 5.2280
15 minute winter 10 12 18.286 0.396 285.4 0.9896 0.0000 SURCHARGED
15 minute winter 10 1.003 11.1 272.3 3.569 0.677 4.8789
15 minute winter 11.1 12 17.445 1.335 310.4 3.2996 0.0000 SURCHARGED
15 minute winter 11.1 1.004 11 288.3 2.662 0.664 3.1243
15 minute winter 11 12 16.690 1.925 346.6 6.1126 0.0000 FLOOD RISK
15 minute winter 11 1.005 12 352.7 2.226 1.198 12.6948
15 minute winter 12 11 15.600 1.500 380.0 3.7170 11.5022 FLOOD
15 minute winter 12 1.006 15 328.4 2.129 0.946 3.4351
15 minute winter 15 12 15.328 1.628 369.7 4.4462 0.0000 SURCHARGED
15 minute winter 15 1.007 24.1 360.0 1.278 1.137 26.3002
15 minute winter 13 11 15.700 1.275 78.5 5.9823 6.0525 FLOOD
15 minute winter 13 6.000 23 45.4 1.141 1.366 1.3976
15 minute winter 23 11 15.626 1.346 85.1 3.8340 0.0000 FLOOD RISK
15 minute winter 23 6.001 24 70.5 1.774 1.730 0.9316
15 minute winter 200 10 20.641 0.141 57.4 0.3639 0.0000 OK
15 minute winter 200 8.000 201 56.4 1.406 0.460 2.7225
15 minute winter 201 11 19.903 0.203 87.5 0.4724 0.0000 OK
15 minute winter 201 8.001 202 84.6 1.713 0.766 3.4963
15 minute winter 202 11 19.145 0.220 112.9 0.5583 0.0000 OK
15 minute winter 202 8.002 203 112.4 1.256 0.669 6.2178
15 minute winter 203 12 18.786 0.361 120.9 0.6357 0.0000 OK
15 minute winter 203 8.003 204 117.5 1.111 1.060 1.6299
15 minute winter 204 12 18.702 0.325 122.1 0.5338 0.0000 OK
15 minute winter 204 8.004 205 123.2 1.337 1.100 1.0105
15 minute winter 205 11 18.413 0.146 151.5 0.3717 0.0000 OK
15 minute winter 205 8.005 206 150.4 2.283 0.233 4.3140
15 minute winter 206 12 16.707 0.432 158.9 0.7492 0.0000 OK
15 minute winter 206 8.006 207 158.2 0.868 0.656 2.8265
15 minute winter 207 12 16.676 0.438 176.0 1.1019 0.0000 OK
15 minute winter 207 8.007 208 178.0 0.984 0.745 8.1584
15 minute winter 220 10 16.856 0.206 115.2 1.3096 0.0000 OK
15 minute winter 220 9.000 208 113.1 1.788 0.507 2.3098
15 minute winter 208 12 16.608 0.471 297.5 1.1875 0.0000 OK
15 minute winter 208 8.008 209 298.2 1.814 1.370 6.9067
15 minute winter 209 12 16.361 0.308 357.6 1.2401 0.0000 OK
15 minute winter 209 8.009 210 362.3 2.343 0.655 14.6906
15 minute winter 210 12 15.327 0.594 396.8 2.2506 0.0000 OK
15 minute winter 210 8.010 211 385.4 1.193 0.994 13.3720
15 minute winter 211 13 15.231 0.569 398.0 1.4046 0.0000 OK
15 minute winter 211 8.011 212 394.5 1.300 1.014 6.5033
15 minute winter 212 13 15.141 0.516 394.5 0.9118 0.0000 OK
15 minute winter 212 8.012 213 396.6 1.540 1.026 13.0811
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 22
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 30 year Cri cal Storm Dura on. Lowest mass balance: 99.36%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 221 11 16.749 0.399 176.0 2.9154 0.0000 OK
15 minute winter 221 10.000 222 168.6 1.213 1.059 10.5685
15 minute winter 222 12 16.536 0.367 168.6 0.4149 0.0000 OK
15 minute winter 222 10.001 223 162.7 1.326 1.006 7.1707
15 minute winter 226 11 16.688 0.338 98.9 1.5550 0.0000 OK
15 minute winter 226 11.000 227 91.6 0.716 0.574 5.8256
15 minute winter 227 11 16.655 0.408 174.9 1.5989 0.0000 OK
15 minute winter 227 11.001 228 168.9 1.149 1.060 10.5571
15 minute winter 228 11 16.449 0.379 180.3 0.5660 0.0000 OK
15 minute winter 228 11.002 223 177.3 1.392 1.108 2.5502
15 minute winter 223 12 16.063 0.193 340.0 0.2758 0.0000 OK
15 minute winter 223 10.002 224 340.5 2.827 0.191 1.6230
15 minute winter 224 12 15.322 0.341 340.5 0.4879 0.0000 OK
15 minute winter 224 10.003 225 341.1 1.641 0.331 2.3683
15 minute winter 225 12 15.259 0.525 341.1 0.7516 0.0000 OK
15 minute winter 225 10.004 213 334.5 1.478 1.179 15.8598
15 minute winter 229 11 15.074 0.177 40.5 0.6305 0.0000 OK
15 minute winter 229 12.000 230 38.1 0.577 0.252 2.4549
15 minute winter 232 11 15.061 0.202 33.6 0.6336 0.0000 OK
15 minute winter 232 13.000 230 31.7 0.476 0.208 1.3220
15 minute winter 230 11 15.054 0.234 69.5 0.3342 0.0000 OK
15 minute winter 230 12.001 231 69.3 0.876 0.460 1.0069
15 minute winter 231 11 15.008 0.216 69.3 0.3089 0.0000 OK
15 minute winter 231 12.002 213 69.0 1.024 0.459 0.9212
180 minute winter 213 176 14.914 0.452 262.0 871.0422 0.0000 OK
180 minute winter 213 8.013 214 43.2 0.614 0.091 7.6535
180 minute winter 214 176 14.914 0.491 43.2 0.8669 0.0000 OK
180 minute winter 214 8.014 215 43.7 0.585 0.092 15.5139
180 minute winter 215 176 14.913 0.560 43.7 0.9892 0.0000 OK
180 minute winter 215 8.015 216 44.3 0.549 0.094 26.7462
15 minute winter 233 12 15.079 0.311 104.1 1.8719 0.0000 OK
15 minute winter 233 14.000 234 91.6 0.751 0.328 10.5904
15 minute winter 234 12 15.071 0.404 136.2 1.2394 0.0000 OK
15 minute winter 234 14.001 235 109.2 0.601 0.391 13.3832
15 minute winter 240 12 15.067 0.374 111.1 2.2576 0.0000 OK
15 minute winter 240 15.000 241 90.3 0.687 0.324 12.5485
15 minute winter 241 12 15.058 0.465 90.3 0.5255 0.0000 OK
15 minute winter 241 15.001 235 85.6 0.358 0.307 3.7429
15 minute winter 235 12 15.053 0.486 242.0 1.8280 0.0000 OK
15 minute winter 235 14.002 236 237.5 0.981 0.853 8.6170
15 minute winter 236 12 14.986 0.478 278.8 1.6639 0.0000 OK
15 minute winter 236 14.003 237 276.9 1.229 0.995 10.0270
180 minute winter 237 172 14.912 0.478 82.4 0.6844 0.0000 OK
180 minute winter 237 14.004 238 80.9 0.931 0.286 1.8503
180 minute winter 242 176 14.912 0.208 12.9 0.7562 0.0000 OK
180 minute winter 242 16.000 243 12.9 0.562 0.085 4.5611
180 minute winter 243 172 14.912 0.315 12.9 0.3565 0.0000 OK
180 minute winter 243 16.001 238 12.3 0.618 0.081 1.4514
180 minute winter 238 172 14.912 0.641 92.5 1.1330 0.0000 OK
180 minute winter 238 12.005 239 91.4 0.583 0.200 3.7906
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 23
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 30 year Cri cal Storm Dura on. Lowest mass balance: 99.36%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
180 minute winter 239 172 14.912 0.654 91.4 1.1560 0.0000 OK
180 minute winter 239 12.006 216 90.5 0.613 0.208 2.9159
180 minute winter 216 172 14.912 0.663 95.2 1.1718 0.0000 OK
180 minute winter 216 8.016 217 75.7 0.543 0.160 38.4174
180 minute winter 217 172 14.911 0.796 75.7 1.4063 0.0000 SURCHARGED
180 minute winter 217 8.017 218 57.4 0.457 0.122 30.9568
180 minute winter 218 172 14.910 0.899 57.4 3.1127 0.0000 SURCHARGED
180 minute winter 218 Hydro-Brake® 219 50.0
180 minute winter 219 172 14.613 0.647 50.0 0.7321 0.0000 SURCHARGED
180 minute winter 219 8.019 Pump in 50.3 1.064 0.784 3.0460
15 minute winter 24 12 15.235 1.175 78.6 1.6830 0.0000 SURCHARGED
15 minute winter 24 6.002 24.1 67.7 1.210 0.762 2.8531
15 minute winter 24.1 12 15.066 1.566 427.7 1.7715 0.0000 SURCHARGED
15 minute winter 24.1 1.008 25 426.6 1.515 0.559 2.8717
15 minute winter 19 10 19.776 0.176 57.1 0.5653 0.0000 OK
15 minute winter 19 3.000 20 56.2 1.911 0.850 0.7259
15 minute winter 20 10 19.337 0.137 88.0 0.3906 0.0000 OK
15 minute winter 20 3.001 21 86.8 3.543 0.638 0.9215
15 minute winter 18.1 10 21.130 0.106 46.4 0.4220 0.0000 OK
15 minute winter 18.1 4.000 18 46.1 3.306 0.810 0.2748
15 minute winter 17 10 22.262 0.062 19.7 0.1148 0.0000 OK
15 minute winter 17 7.000 18 19.4 1.937 0.169 0.8371
15 minute winter 18 11 19.240 0.200 109.8 0.5767 0.0000 OK
15 minute winter 18 4.001 21 107.2 2.931 1.042 2.3694
15 minute winter 21 11 16.580 0.150 215.9 0.2944 0.0000 OK
15 minute winter 21 3.002 22 215.5 1.866 0.222 3.1032
15 minute winter 22 12 15.491 1.775 221.0 2.2567 0.0000 SURCHARGED
15 minute winter 22 3.003 2.4 204.2 1.289 1.261 1.8707
30 minute winter 100 22 20.000 0.800 13.8 2.3848 8.4837 FLOOD
30 minute winter 100 5.000 101 8.1 0.618 0.306 0.3604
30 minute winter 101 22 20.000 1.257 50.4 7.9618 16.5234 FLOOD
30 minute winter 101 5.001 102 30.3 1.901 0.886 0.7495
30 minute winter 102 27 19.054 1.878 43.5 3.6812 0.0000 SURCHARGED
30 minute winter 102 5.002 103 42.6 2.422 1.169 0.2572
60 minute winter 103 31 18.000 1.433 95.5 9.3002 63.0605 FLOOD
60 minute winter 103 5.003 104 43.0 2.440 1.180 0.6941
15 minute winter 104 12 16.032 1.102 43.7 1.3424 0.0000 SURCHARGED
15 minute winter 104 5.004 2.3 45.3 2.602 1.144 0.1871
15 minute winter 2.3 12 15.458 1.049 56.3 2.1331 0.0000 SURCHARGED
15 minute winter 2.3 5.005 2.4 70.4 0.866 0.290 5.4446
15 minute winter 2.4 12 15.403 1.718 268.7 2.5674 0.0000 SURCHARGED
15 minute winter 2.4 3.004 25 269.7 1.702 1.063 7.9501
15 minute winter 25 12 14.978 1.603 678.7 1.8402 0.0000 SURCHARGED
15 minute winter 25 1.009 23.4 677.9 2.407 1.289 1.2019
15 minute winter 23.4 12 14.790 1.440 679.5 1.7017 0.0000 SURCHARGED
15 minute winter 23.4 1.010 23.3 679.4 2.412 1.275 2.2985
30 minute winter 23.3 21 14.575 1.274 633.9 1.5124 0.0000 SURCHARGED
30 minute winter 23.3 1.011 23.2 633.3 2.249 0.740 4.5899
180 minute winter 23.2 172 14.521 1.471 240.7 1.6930 0.0000 SURCHARGED
180 minute winter 23.2 1.012 Pump in 240.5 0.854 0.596 4.0683
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 24
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 30 year Cri cal Storm Dura on. Lowest mass balance: 99.36%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
180 minute winter Pump in 172 14.520 1.520 303.3 678.4764 0.0000 SURCHARGED
180 minute winter Pump in Head/Flow Pond 95.2 2698.1
15 minute summer Pond 1 12.786 0.000 91.5 0.0000 0.0000 OK
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 25
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year +40% CC Cri cal Storm Dura on. Lowest mass balance: 99.36%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 8.1 12 22.696 1.046 93.7 3.9523 0.0000 FLOOD RISK
15 minute winter 8.1 1.000 8 81.7 2.292 0.964 2.6022
15 minute winter 8 10 21.195 1.420 279.2 8.2857 14.0042 FLOOD
15 minute winter 8 1.001 9 209.2 1.972 0.878 9.7078
15 minute winter 9.1 10 20.500 1.710 45.3 3.3738 2.1153 FLOOD
15 minute winter 9.1 2.000 9 30.8 0.894 1.026 1.2988
15 minute winter 9 10 20.365 1.835 304.1 5.0151 6.9643 FLOOD
15 minute winter 9 1.002 10 272.5 2.471 1.193 5.4297
15 minute winter 10 10 19.421 1.531 360.6 3.8234 0.0000 SURCHARGED
15 minute winter 10 1.003 11.1 352.7 3.526 0.877 4.8789
15 minute winter 11.1 9 17.750 1.640 419.4 4.0541 33.6246 FLOOD
15 minute winter 11.1 1.004 11 320.0 2.901 0.737 3.1243
15 minute winter 11 9 16.985 2.220 429.0 7.0507 5.0874 FLOOD
15 minute winter 11 1.005 12 396.6 2.503 1.347 12.6948
30 minute winter 12 15 15.600 1.500 445.8 3.7170 114.8351 FLOOD
30 minute winter 12 1.006 15 290.1 1.979 0.835 3.4351
15 minute winter 15 10 15.447 1.747 394.4 4.7708 0.0000 SURCHARGED
15 minute winter 15 1.007 24.1 358.5 1.273 1.132 26.3002
30 minute winter 13 15 15.700 1.275 110.6 5.9823 45.3162 FLOOD
30 minute winter 13 6.000 23 40.5 1.018 1.218 1.3976
15 minute winter 23 9 15.700 1.420 102.8 4.0456 4.8218 FLOOD
15 minute winter 23 6.001 24 71.0 1.785 1.740 0.9316
15 minute winter 200 12 21.257 0.757 104.2 1.9474 0.0000 SURCHARGED
15 minute winter 200 8.000 201 94.6 1.530 0.772 4.6387
15 minute winter 201 12 20.822 1.122 147.9 2.6153 0.0000 SURCHARGED
15 minute winter 201 8.001 202 131.0 1.860 1.186 4.9839
15 minute winter 202 12 19.706 0.781 175.1 1.9804 0.0000 SURCHARGED
15 minute winter 202 8.002 203 175.7 1.593 1.046 7.8062
15 minute winter 203 12 19.085 0.660 188.5 1.1631 0.0000 SURCHARGED
15 minute winter 203 8.003 204 189.1 1.715 1.707 1.7083
15 minute winter 204 12 18.869 0.492 197.4 0.8079 0.0000 SURCHARGED
15 minute winter 204 8.004 205 197.8 1.802 1.767 1.1683
15 minute winter 205 12 18.511 0.244 252.9 0.6226 0.0000 OK
15 minute winter 205 8.005 206 245.9 2.284 0.381 5.9598
15 minute winter 206 12 18.000 1.725 261.3 2.9894 1.4319 FLOOD
15 minute winter 206 8.006 207 258.9 1.198 1.073 3.1906
15 minute winter 207 12 17.933 1.695 282.7 4.2634 0.0000 FLOOD RISK
15 minute winter 207 8.007 208 290.6 1.345 1.216 8.8809
15 minute winter 220 12 18.000 1.350 209.2 8.5928 0.4674 FLOOD
15 minute winter 220 9.000 208 164.0 1.854 0.735 3.2260
15 minute winter 208 12 17.771 1.634 462.4 4.1164 0.0000 FLOOD RISK
15 minute winter 208 8.008 209 471.0 2.180 2.164 8.8809
15 minute winter 209 12 17.283 1.230 569.7 4.9533 0.0000 SURCHARGED
15 minute winter 209 8.009 210 568.8 2.633 1.028 19.4427
15 minute winter 210 12 15.859 1.126 631.6 4.2672 0.0000 FLOOD RISK
15 minute winter 210 8.010 211 631.9 1.770 1.630 14.6354
15 minute winter 211 12 15.597 0.935 655.0 2.3087 0.0000 SURCHARGED
15 minute winter 211 8.011 212 655.1 1.835 1.683 7.5662
360 minute winter 212 352 15.448 0.823 113.7 1.4539 0.0000 SURCHARGED
360 minute winter 212 8.012 213 110.8 0.942 0.287 18.2269
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 26
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year +40% CC Cri cal Storm Dura on. Lowest mass balance: 99.36%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 221 11 17.694 1.344 319.8 9.8145 0.0000 SURCHARGED
15 minute winter 221 10.000 222 299.7 1.892 1.882 11.6708
15 minute winter 222 11 16.959 0.790 299.7 0.8937 0.0000 SURCHARGED
15 minute winter 222 10.001 223 297.9 1.894 1.842 8.8691
15 minute winter 226 11 17.704 1.354 179.7 6.2263 0.0000 FLOOD RISK
15 minute winter 226 11.000 227 170.4 1.076 1.068 6.6174
15 minute winter 227 11 17.556 1.309 314.7 5.1253 0.0000 SURCHARGED
15 minute winter 227 11.001 228 315.6 1.992 1.980 11.3953
15 minute winter 228 11 16.758 0.688 336.3 1.0273 0.0000 SURCHARGED
15 minute winter 228 11.002 223 336.3 2.126 2.102 3.0942
15 minute winter 223 11 16.279 0.409 634.2 0.5848 0.0000 OK
15 minute winter 223 10.002 224 631.4 2.898 0.354 3.2425
15 minute winter 224 11 16.005 1.024 631.4 1.4652 0.0000 SURCHARGED
15 minute winter 224 10.003 225 627.0 2.226 0.609 3.1258
15 minute winter 225 12 15.790 1.056 627.0 1.5107 0.0000 FLOOD RISK
15 minute winter 225 10.004 213 630.5 2.251 2.222 19.0518
360 minute winter 229 352 15.448 0.551 10.1 1.9568 0.0000 SURCHARGED
360 minute winter 229 12.000 230 10.1 0.405 0.067 5.5124
360 minute winter 232 352 15.448 0.589 8.3 1.8439 0.0000 SURCHARGED
360 minute winter 232 13.000 230 8.0 0.330 0.053 2.7537
360 minute winter 230 352 15.448 0.628 17.8 0.8982 0.0000 SURCHARGED
360 minute winter 230 12.001 231 17.5 0.597 0.116 2.0168
360 minute winter 231 352 15.448 0.656 17.5 0.9382 0.0000 SURCHARGED
360 minute winter 231 12.002 213 17.2 0.687 0.114 2.1643
360 minute winter 213 352 15.448 0.986 268.0 2043.1120 0.0000 SURCHARGED
360 minute winter 213 8.013 214 48.3 0.623 0.102 11.5633
360 minute winter 214 352 15.447 1.024 48.3 1.8100 0.0000 SURCHARGED
360 minute winter 214 8.014 215 48.3 0.598 0.102 20.7631
360 minute winter 215 352 15.447 1.094 48.3 1.9325 0.0000 SURCHARGED
360 minute winter 215 8.015 216 48.3 0.549 0.102 30.7979
15 minute winter 233 12 15.975 1.207 189.1 7.2608 0.0000 FLOOD RISK
15 minute winter 233 14.000 234 170.9 0.791 0.613 17.0725
15 minute winter 234 12 15.932 1.265 247.1 3.8779 0.0000 FLOOD RISK
15 minute winter 234 14.001 235 250.2 0.888 0.896 16.8877
15 minute winter 240 11 15.921 1.228 201.7 7.4233 0.0000 FLOOD RISK
15 minute winter 240 15.000 241 173.0 0.726 0.620 16.8877
15 minute winter 241 12 15.852 1.259 173.0 1.4244 0.0000 FLOOD RISK
15 minute winter 241 15.001 235 174.7 0.620 0.627 4.4052
15 minute winter 235 12 15.836 1.269 502.7 4.7724 0.0000 FLOOD RISK
15 minute winter 235 14.002 236 491.9 1.746 1.766 10.0060
15 minute winter 236 12 15.584 1.076 575.7 3.7467 0.0000 SURCHARGED
15 minute winter 236 14.003 237 568.8 2.020 2.044 12.5622
360 minute winter 237 352 15.446 1.012 71.5 1.4478 0.0000 SURCHARGED
360 minute winter 237 14.004 238 69.9 0.803 0.247 2.1368
360 minute winter 242 352 15.446 0.742 13.9 2.6926 0.0000 SURCHARGED
360 minute winter 242 16.000 243 12.2 0.495 0.080 7.5944
360 minute winter 243 352 15.446 0.849 12.2 0.9599 0.0000 SURCHARGED
360 minute winter 243 16.001 238 11.1 0.538 0.074 1.8576
360 minute winter 238 352 15.446 1.175 80.5 2.0757 0.0000 SURCHARGED
360 minute winter 238 12.005 239 79.6 0.468 0.174 4.1275
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 27
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year +40% CC Cri cal Storm Dura on. Lowest mass balance: 99.36%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
360 minute winter 239 352 15.446 1.188 79.6 2.0987 0.0000 SURCHARGED
360 minute winter 239 12.006 216 79.0 0.501 0.181 3.1323
360 minute winter 216 352 15.446 1.197 79.0 2.1147 0.0000 SURCHARGED
360 minute winter 216 8.016 217 66.2 0.527 0.140 39.6892
360 minute winter 217 352 15.445 1.330 66.2 2.3493 0.0000 SURCHARGED
360 minute winter 217 8.017 218 54.8 0.407 0.116 30.9568
360 minute winter 218 352 15.444 1.433 54.8 4.9623 0.0000 SURCHARGED
360 minute winter 218 Hydro-Brake® 219 50.0
240 minute winter 219 236 15.215 1.249 50.0 1.4129 0.0000 SURCHARGED
240 minute winter 219 8.019 Pump in 50.0 1.064 0.779 3.0460
30 minute winter 24 20 15.402 1.342 72.6 1.9213 0.0000 SURCHARGED
30 minute winter 24 6.002 24.1 68.3 1.161 0.768 2.8531
60 minute winter 24.1 37 15.261 1.761 402.6 1.9916 0.0000 SURCHARGED
60 minute winter 24.1 1.008 25 400.2 1.421 0.525 2.8717
15 minute winter 19 12 20.615 1.015 103.6 3.2686 0.0000 SURCHARGED
15 minute winter 19 3.000 20 89.3 2.245 1.350 0.9862
15 minute winter 20 12 19.762 0.562 146.3 1.6031 0.0000 SURCHARGED
15 minute winter 20 3.001 21 135.5 3.870 0.997 1.4957
15 minute winter 18.1 10 21.964 0.940 84.2 3.7431 5.6288 FLOOD
15 minute winter 18.1 4.000 18 50.4 3.359 0.886 0.3332
15 minute winter 17 10 22.285 0.085 35.8 0.1569 0.0000 OK
15 minute winter 17 7.000 18 35.4 1.875 0.307 1.6812
15 minute winter 18 11 20.500 1.460 164.7 4.2106 2.7727 FLOOD
15 minute winter 18 4.001 21 122.6 3.083 1.192 2.4452
15 minute summer 21 10 16.666 0.236 292.9 0.4641 0.0000 OK
15 minute summer 21 3.002 22 290.8 2.109 0.300 3.6814
15 minute summer 22 10 15.930 2.215 300.4 2.8150 0.0000 FLOOD RISK
15 minute summer 22 3.003 2.4 303.0 1.912 1.870 1.8707
60 minute winter 100 29 20.000 0.800 19.3 2.3848 26.7610 FLOOD
60 minute winter 100 5.000 101 7.4 0.599 0.278 0.3604
60 minute winter 101 29 20.000 1.257 84.4 7.9618 74.0262 FLOOD
60 minute winter 101 5.001 102 28.1 1.871 0.819 0.7495
30 minute winter 102 26 19.497 2.321 51.1 4.5489 0.0000 SURCHARGED
30 minute winter 102 5.002 103 50.8 2.886 1.393 0.2572
120 minute winter 103 48 18.000 1.433 116.0 9.3002 174.0670 FLOOD
120 minute winter 103 5.003 104 42.9 2.435 1.178 0.6941
30 minute winter 104 22 16.351 1.421 43.5 1.7308 0.0000 SURCHARGED
30 minute winter 104 5.004 2.3 44.3 2.518 1.120 0.1871
15 minute winter 2.3 10 15.760 1.351 110.9 2.7479 4.5798 FLOOD
15 minute winter 2.3 5.005 2.4 68.5 0.870 0.282 5.4446
15 minute winter 2.4 10 15.725 2.040 372.7 3.0478 12.0517 FLOOD
15 minute winter 2.4 3.004 25 321.8 2.031 1.268 7.9501
60 minute winter 25 37 15.201 1.826 637.6 2.0968 0.0000 SURCHARGED
60 minute winter 25 1.009 23.4 636.9 2.261 1.210 1.2019
180 minute winter 23.4 176 15.175 1.825 410.1 2.1577 0.0000 SURCHARGED
180 minute winter 23.4 1.010 23.3 409.6 1.499 0.769 2.2985
180 minute winter 23.3 176 15.172 1.871 410.6 2.2214 0.0000 SURCHARGED
180 minute winter 23.3 1.011 23.2 410.2 1.456 0.480 4.5899
240 minute winter 23.2 228 15.168 2.118 333.9 2.4384 0.0000 SURCHARGED
240 minute winter 23.2 1.012 Pump in 333.6 1.184 0.826 4.0683
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Hardstanding NetworkSam Raven14/02/2020
Page 28
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year +40% CC Cri cal Storm Dura on. Lowest mass balance: 99.36%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
240 minute winter Pump in 232 15.166 2.166 402.5 1408.3040 0.0000 SURCHARGED
240 minute winter Pump in Head/Flow Pond 100.0 5168.2
15 minute summer Pond 1 12.786 0.000 93.2 0.0000 0.0000 OK
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Ground/Roof WaterSam Raven14/02/2020
Page 1
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Design Se ngs
Rainfall MethodologyReturn Period (years)
Addi onal Flow (%)FSR Region
M5-60 (mm)Ra o-R
CVTime of Entry (mins)
FSR10England and Wales20.0000.4000.7505.00
Maximum Time of Concentra on (mins)Maximum Rainfall (mm/hr)
Minimum Velocity (m/s)Connec on Type
Minimum Backdrop Height (m)Preferred Cover Depth (m)
Include Intermediate GroundEnforce best prac ce design rules
30.0050.01.00Level So ts6.0001.200✓✓
Nodes
Name Area(ha)
T of E(mins)
CoverLevel(m)
Diameter(mm)
Eas ng(m)
Northing(m)
Depth(m)
66.17511.122.134In25.425.125.225.3125123501502600601602603604605606609610611612613614615607503504121122
0.2680.0320.1530.3070.2580.0190.1690.0200.5090.0200.0170.1070.0000.0000.0000.0110.1090.0570.1520.0860.0000.1450.0000.0000.0680.0680.2060.0000.0930.0000.0320.0740.0120.0000.156
0.0800.154
5.005.005.005.005.005.005.005.005.005.005.005.00
30.005.005.005.005.00
5.00
5.005.005.00
5.00
5.005.005.00
5.00
5.005.00
20.80017.97018.12515.95020.99016.70016.70015.95015.73516.00016.00015.60015.65515.77515.67015.80016.50021.25020.70016.00016.00016.00016.00016.00016.00016.00016.00016.00016.00016.00016.00016.00016.00016.00019.30013.00016.90017.000
12001350135013501350135013501350135012001200135013501350120021001200210021001200120013501350135013501350120012001350135013501350135013502100210015001500
573814.692573814.094573814.029573809.820573906.260573905.771573901.622573901.225573900.598573809.815573809.607573909.011573908.445573860.312573810.729573794.632573857.795573794.483573749.012573731.762573731.762573738.259573738.259573731.316573731.316573720.872573657.163573657.163573649.394573649.394573666.923573666.924573683.890573683.892573675.104573583.946573957.338573943.346
157755.780157813.643157820.773157858.434157758.616157815.885157820.070157858.643157909.435157911.524157939.224157909.938157965.810157965.452157954.180157939.290157973.813157982.278157982.399157828.822157848.460157848.460157888.375157926.107157951.824157970.076157828.822157881.879157881.879157909.247157909.244157954.116157954.116157970.076157982.815157981.007157925.666157973.902
1.7001.7202.1501.4003.8302.0002.0801.7001.7852.4502.5501.4001.7001.9401.9803.0502.6508.6048.0991.5001.5811.6831.8061.9252.0052.0701.5001.7171.8241.9091.9642.1032.1562.2816.7732.0000.9002.300
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Ground/Roof WaterSam Raven14/02/2020
Page 2
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Links
Name USNode
DSNode
Length(m)
ks (mm) /n
US IL(m)
DS IL(m)
Fall(m)
Slope(1:X)
Dia(mm)
T of C(mins)
Rain(mm/hr)
Name Vel(m/s)
Cap(l/s)
Flow(l/s)
USDepth
(m)
DSDepth
(m)
Σ Area(ha)
Σ AddIn ow
(l/s)
1.000 6 6.1 57.866 0.600 19.100 16.470 2.630 22.0 225 5.34 50.0
1.000 2.801 111.4 36.3 1.475 1.275 0.268 0.0
1.001 6.1 7 7.130 0.600 16.250 15.975 0.275 25.9 450 5.38 50.0
1.001 4.005 636.9 40.7 1.270 1.700 0.300 0.0
1.002 7 5 37.896 0.600 15.975 14.550 1.425 26.6 450 5.53 50.0
1.002 3.954 628.8 61.4 1.700 0.950 0.453 0.0
1.003 5 4 53.090 0.600 14.550 13.699 0.851 62.4 450 5.87 50.0
1.003 2.577 409.9 103.0 0.950 1.851 0.760 0.0
2.000 1 1.1 57.271 0.600 17.160 14.703 2.457 23.3 375 5.26 50.0
2.000 3.766 416.0 35.0 3.455 1.622 0.258 0.0
2.001 1.1 2 5.893 0.600 14.700 14.650 0.050 117.9 375 5.26 50.0
2.001 1.668 184.2 37.5 1.625 1.675 0.277 0.0
2.002 2 2.1 38.576 0.600 14.620 14.250 0.370 104.3 375 5.63 50.0
2.002 1.774 195.9 60.4 1.705 1.325 0.446 0.0
2.003 2.1 3 50.795 0.600 14.250 13.950 0.300 169.3 375 6.33 49.1
2.003 1.389 153.4 62.0 1.325 1.410 0.466 0.0
2.004 3 4 90.807 0.600 13.950 13.550 0.400 227.0 450 7.77 44.3
2.004 1.345 213.9 117.1 1.335 2.000 0.975 0.0
1.004 4 In 27.701 0.600 13.550 13.450 0.100 277.0 600 8.26 42.9
1.004 1.458 412.2 204.1 1.850 1.950 1.755 0.0
1.005 In 125 14.975 0.600 13.450 13.350 0.100 149.8 600 8.64 41.9
1.005 1.987 561.9 201.2 1.950 1.850 1.772 0.0
3.000 25.4 25.1 55.875 0.600 14.200 13.955 0.245 228.1 450 5.70 50.0
3.000 1.342 213.4 14.5 0.950 1.250 0.107 0.0
3.001 25.1 25.2 48.134 0.600 13.955 13.835 0.120 401.1 450 6.48 48.5
3.001 1.009 160.4 14.1 1.250 1.490 0.107 0.0
3.002 25.2 25.3 50.847 0.600 13.835 13.690 0.145 350.7 450 7.27 45.9
3.002 1.080 171.7 13.3 1.490 1.530 0.107 0.0
3.003 25.3 125 21.928 0.600 13.690 13.550 0.140 156.6 450 7.73 44.4
3.003 1.622 257.9 12.9 1.530 1.800 0.107 0.0
1.006 125 501 42.988 0.600 12.750 12.646 0.104 413.3 1200 30.00 20.2
1.006 1.833 2073.6 103.5 1.850 7.404 1.890 0.0
4.000 121 122 50.224 0.600 16.000 14.700 1.300 38.6 500 5.19 50.0
4.000 3.502 687.7 10.8 0.400 1.800 0.080 0.0
4.001 122 123 85.551 0.600 14.700 13.850 0.850 100.6 500 6.77 47.5
4.001 2.165 425.1 30.1 1.800 2.150 0.234 0.0
4.002 123 501 63.875 0.600 13.850 13.346 0.504 126.7 500 7.32 45.7
4.002 1.928 378.6 42.5 2.150 7.404 0.343 0.0
1.007 501 502 45.471 0.600 12.646 12.601 0.045 1010.5 1200 30.00 20.2
1.007 1.168 1321.2 125.5 7.404 6.899 2.290 0.0
1.008 502 503 73.909 0.600 12.601 12.527 0.074 998.8 1200 30.00 20.2
1.008 1.175 1329.0 133.8 6.899 5.573 2.442 0.0
5.000 600 601 19.638 0.600 14.500 14.419 0.081 242.4 300 5.33 50.0
5.000 1.005 71.0 11.7 1.200 1.281 0.086 0.0
5.001 601 602 6.497 0.600 14.419 14.392 0.027 240.6 300 5.43 50.0
5.001 1.009 71.3 11.7 1.281 1.308 0.086 0.0
5.002 602 603 39.915 0.600 14.317 14.194 0.123 324.5 375 6.10 50.0
5.002 1.000 110.5 31.3 1.308 1.431 0.231 0.0
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Ground/Roof WaterSam Raven14/02/2020
Page 3
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Links
Name USNode
DSNode
Length(m)
ks (mm) /n
US IL(m)
DS IL(m)
Fall(m)
Slope(1:X)
Dia(mm)
T of C(mins)
Rain(mm/hr)
Name Vel(m/s)
Cap(l/s)
Flow(l/s)
USDepth
(m)
DSDepth
(m)
Σ Area(ha)
Σ AddIn ow
(l/s)
5.003 603 604 38.365 0.600 14.194 14.075 0.119 322.4 375 6.74 47.6
5.003 1.003 110.8 29.8 1.431 1.550 0.231 0.0
5.004 604 605 25.717 0.600 14.075 13.995 0.080 321.5 375 7.16 46.2
5.004 1.005 111.0 28.9 1.550 1.630 0.231 0.0
5.005 605 606 21.029 0.600 13.995 13.930 0.065 323.5 375 7.51 45.1
5.005 1.002 110.6 36.6 1.630 1.695 0.299 0.0
5.006 606 607 36.980 0.600 13.930 13.794 0.136 271.9 375 8.08 43.4
5.006 1.094 120.8 43.2 1.695 1.831 0.367 0.0
7.000 609 610 53.057 0.600 14.500 14.283 0.217 244.5 300 5.88 50.0
7.000 1.001 70.7 27.9 1.200 1.417 0.206 0.0
7.001 610 611 7.769 0.600 14.283 14.251 0.032 242.8 300 6.01 50.0
7.001 1.004 71.0 27.9 1.417 1.449 0.206 0.0
7.002 611 612 27.368 0.600 14.176 14.091 0.085 322.0 375 6.47 48.6
7.002 1.004 110.9 39.4 1.449 1.534 0.299 0.0
7.003 612 613 17.529 0.600 14.091 14.036 0.055 318.7 375 6.76 47.6
7.003 1.009 111.5 38.5 1.534 1.589 0.299 0.0
7.004 613 614 44.872 0.600 14.036 13.897 0.139 322.8 375 7.50 45.1
7.004 1.003 110.7 40.5 1.589 1.728 0.331 0.0
7.005 614 615 16.966 0.600 13.897 13.844 0.053 320.1 375 7.78 44.3
7.005 1.007 111.2 48.6 1.728 1.781 0.405 0.0
7.006 615 607 15.960 0.600 13.844 13.794 0.050 319.2 375 8.05 43.5
7.006 1.008 111.4 49.2 1.781 1.831 0.417 0.0
5.007 607 503 15.476 0.600 13.719 13.277 0.442 35.0 450 8.15 43.2
5.007 3.444 547.8 91.9 1.831 5.573 0.784 0.0
1.009 503 504 91.176 0.600 12.527 11.000 1.527 59.7 1200 30.00 20.2
1.009 4.845 5479.7 185.3 5.573 0.800 3.382 0.0
Pipeline Schedule
Link Length(m)
Slope(1:X)
Dia(mm)
LinkType
US CL(m)
US IL(m)
US Depth(m)
DS CL(m)
DS IL(m)
DS Depth(m)
Link USNode
Dia(mm)
NodeType
MHType
DSNode
Dia(mm)
NodeType
MHType
1.000 57.866 22.0 225 Circular_Default Sewer Type 20.800 19.100 1.475 17.970 16.470 1.275
1.000 6 1200 Manhole Adoptable 6.1 1350 Manhole Adoptable
1.001 7.130 25.9 450 Circular_Default Sewer Type 17.970 16.250 1.270 18.125 15.975 1.700
1.001 6.1 1350 Manhole Adoptable 7 1350 Manhole Adoptable
1.002 37.896 26.6 450 Circular_Default Sewer Type 18.125 15.975 1.700 15.950 14.550 0.950
1.002 7 1350 Manhole Adoptable 5 1350 Manhole Adoptable
1.003 53.090 62.4 450 Circular_Default Sewer Type 15.950 14.550 0.950 16.000 13.699 1.851
1.003 5 1350 Manhole Adoptable 4 1200 Manhole Adoptable
2.000 57.271 23.3 375 Circular_Default Sewer Type 20.990 17.160 3.455 16.700 14.703 1.622
2.000 1 1350 Manhole Adoptable 1.1 1350 Manhole Adoptable
2.001 5.893 117.9 375 Circular_Default Sewer Type 16.700 14.700 1.625 16.700 14.650 1.675
2.001 1.1 1350 Manhole Adoptable 2 1350 Manhole Adoptable
2.002 38.576 104.3 375 Circular_Default Sewer Type 16.700 14.620 1.705 15.950 14.250 1.325
2.002 2 1350 Manhole Adoptable 2.1 1350 Manhole Adoptable
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Ground/Roof WaterSam Raven14/02/2020
Page 4
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Pipeline Schedule
Link Length(m)
Slope(1:X)
Dia(mm)
LinkType
US CL(m)
US IL(m)
US Depth(m)
DS CL(m)
DS IL(m)
DS Depth(m)
Link USNode
Dia(mm)
NodeType
MHType
DSNode
Dia(mm)
NodeType
MHType
2.003 50.795 169.3 375 Circular_Default Sewer Type 15.950 14.250 1.325 15.735 13.950 1.410
2.003 2.1 1350 Manhole Adoptable 3 1350 Manhole Adoptable
2.004 90.807 227.0 450 Circular_Default Sewer Type 15.735 13.950 1.335 16.000 13.550 2.000
2.004 3 1350 Manhole Adoptable 4 1200 Manhole Adoptable
1.004 27.701 277.0 600 Circular_Default Sewer Type 16.000 13.550 1.850 16.000 13.450 1.950
1.004 4 1200 Manhole Adoptable In 1200 Manhole Adoptable
1.005 14.975 149.8 600 Circular_Default Sewer Type 16.000 13.450 1.950 15.800 13.350 1.850
1.005 In 1200 Manhole Adoptable 125 2100 Manhole Adoptable
3.000 55.875 228.1 450 Circular_Default Sewer Type 15.600 14.200 0.950 15.655 13.955 1.250
3.000 25.4 1350 Manhole Adoptable 25.1 1350 Manhole Adoptable
3.001 48.134 401.1 450 Circular_Default Sewer Type 15.655 13.955 1.250 15.775 13.835 1.490
3.001 25.1 1350 Manhole Adoptable 25.2 1350 Manhole Adoptable
3.002 50.847 350.7 450 Circular_Default Sewer Type 15.775 13.835 1.490 15.670 13.690 1.530
3.002 25.2 1350 Manhole Adoptable 25.3 1200 Manhole Adoptable
3.003 21.928 156.6 450 Circular_Default Sewer Type 15.670 13.690 1.530 15.800 13.550 1.800
3.003 25.3 1200 Manhole Adoptable 125 2100 Manhole Adoptable
1.006 42.988 413.3 1200 Circular_Default Sewer Type 15.800 12.750 1.850 21.250 12.646 7.404
1.006 125 2100 Manhole Adoptable 501 2100 Manhole Adoptable
4.000 50.224 38.6 500 Circular_Default Sewer Type 16.900 16.000 0.400 17.000 14.700 1.800
4.000 121 1500 Manhole Adoptable 122 1500 Manhole Adoptable
4.001 85.551 100.6 500 Circular_Default Sewer Type 17.000 14.700 1.800 16.500 13.850 2.150
4.001 122 1500 Manhole Adoptable 123 1200 Manhole Adoptable
4.002 63.875 126.7 500 Circular_Default Sewer Type 16.500 13.850 2.150 21.250 13.346 7.404
4.002 123 1200 Manhole Adoptable 501 2100 Manhole Adoptable
1.007 45.471 1010.5 1200 Circular_Default Sewer Type 21.250 12.646 7.404 20.700 12.601 6.899
1.007 501 2100 Manhole Adoptable 502 2100 Manhole Adoptable
1.008 73.909 998.8 1200 Circular_Default Sewer Type 20.700 12.601 6.899 19.300 12.527 5.573
1.008 502 2100 Manhole Adoptable 503 2100 Manhole Adoptable
5.000 19.638 242.4 300 Circular_Default Sewer Type 16.000 14.500 1.200 16.000 14.419 1.281
5.000 600 1200 Manhole Adoptable 601 1200 Manhole Adoptable
5.001 6.497 240.6 300 Circular_Default Sewer Type 16.000 14.419 1.281 16.000 14.392 1.308
5.001 601 1200 Manhole Adoptable 602 1350 Manhole Adoptable
5.002 39.915 324.5 375 Circular_Default Sewer Type 16.000 14.317 1.308 16.000 14.194 1.431
5.002 602 1350 Manhole Adoptable 603 1350 Manhole Adoptable
5.003 38.365 322.4 375 Circular_Default Sewer Type 16.000 14.194 1.431 16.000 14.075 1.550
5.003 603 1350 Manhole Adoptable 604 1350 Manhole Adoptable
5.004 25.717 321.5 375 Circular_Default Sewer Type 16.000 14.075 1.550 16.000 13.995 1.630
5.004 604 1350 Manhole Adoptable 605 1350 Manhole Adoptable
5.005 21.029 323.5 375 Circular_Default Sewer Type 16.000 13.995 1.630 16.000 13.930 1.695
5.005 605 1350 Manhole Adoptable 606 1350 Manhole Adoptable
5.006 36.980 271.9 375 Circular_Default Sewer Type 16.000 13.930 1.695 16.000 13.794 1.831
5.006 606 1350 Manhole Adoptable 607 1350 Manhole Adoptable
7.000 53.057 244.5 300 Circular_Default Sewer Type 16.000 14.500 1.200 16.000 14.283 1.417
7.000 609 1200 Manhole Adoptable 610 1200 Manhole Adoptable
7.001 7.769 242.8 300 Circular_Default Sewer Type 16.000 14.283 1.417 16.000 14.251 1.449
7.001 610 1200 Manhole Adoptable 611 1350 Manhole Adoptable
7.002 27.368 322.0 375 Circular_Default Sewer Type 16.000 14.176 1.449 16.000 14.091 1.534
7.002 611 1350 Manhole Adoptable 612 1350 Manhole Adoptable
7.003 17.529 318.7 375 Circular_Default Sewer Type 16.000 14.091 1.534 16.000 14.036 1.589
7.003 612 1350 Manhole Adoptable 613 1350 Manhole Adoptable
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Ground/Roof WaterSam Raven14/02/2020
Page 5
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Pipeline Schedule
Link Length(m)
Slope(1:X)
Dia(mm)
LinkType
US CL(m)
US IL(m)
US Depth(m)
DS CL(m)
DS IL(m)
DS Depth(m)
Link USNode
Dia(mm)
NodeType
MHType
DSNode
Dia(mm)
NodeType
MHType
7.004 44.872 322.8 375 Circular_Default Sewer Type 16.000 14.036 1.589 16.000 13.897 1.728
7.004 613 1350 Manhole Adoptable 614 1350 Manhole Adoptable
7.005 16.966 320.1 375 Circular_Default Sewer Type 16.000 13.897 1.728 16.000 13.844 1.781
7.005 614 1350 Manhole Adoptable 615 1350 Manhole Adoptable
7.006 15.960 319.2 375 Circular_Default Sewer Type 16.000 13.844 1.781 16.000 13.794 1.831
7.006 615 1350 Manhole Adoptable 607 1350 Manhole Adoptable
5.007 15.476 35.0 450 Circular_Default Sewer Type 16.000 13.719 1.831 19.300 13.277 5.573
5.007 607 1350 Manhole Adoptable 503 2100 Manhole Adoptable
1.009 91.176 59.7 1200 Circular_Default Sewer Type 19.300 12.527 5.573 13.000 11.000 0.800
1.009 503 2100 Manhole Adoptable 504 2100 Manhole Adoptable
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
6
6.1
7
5
1
1.1
2
2.1
573814.692
573814.094
573814.029
573809.820
573906.260
573905.771
573901.622
573901.225
157755.780
157813.643
157820.773
157858.434
157758.616
157815.885
157820.070
157858.643
20.800
17.970
18.125
15.950
20.990
16.700
16.700
15.950
1.700
1.720
2.150
1.400
3.830
2.000
2.080
1.700
1200
1350
1350
1350
1350
1350
1350
1350
0
1
0
1
0
1
0
0
1
0
1
0
1
0
01
01
01
0
01
01
01
0
1.0001.000
1.0011.001
1.0021.002
1.003
2.0002.000
2.0012.001
2.0022.002
2.003
19.10016.470
16.25015.975
15.97514.550
14.550
17.16014.703
14.70014.650
14.62014.250
14.250
225225
450450
450450
450
375375
375375
375375
375
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Ground/Roof WaterSam Raven14/02/2020
Page 6
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
3
4
In
25.4
25.1
25.2
25.3
125
123
501
502
600
601
573900.598
573809.815
573809.607
573909.011
573908.445
573860.312
573810.729
573794.632
573857.795
573794.483
573749.012
573731.762
573731.762
157909.435
157911.524
157939.224
157909.938
157965.810
157965.452
157954.180
157939.290
157973.813
157982.278
157982.399
157828.822
157848.460
15.735
16.000
16.000
15.600
15.655
15.775
15.670
15.800
16.500
21.250
20.700
16.000
16.000
1.785
2.450
2.550
1.400
1.700
1.940
1.980
3.050
2.650
8.604
8.099
1.500
1.581
1350
1200
1200
1350
1350
1350
1200
2100
1200
2100
2100
1200
1200
1
0
1
2
0
1
0
0
1
0
10
1
0
1
2
0
10
1
2
0
10
0
1
0
1
012
01
0
01
01
01
012
01
012
01
0
01
0
2.003
2.0042.0041.003
1.0041.004
1.005
3.0003.000
3.0013.001
3.0023.002
3.0033.0031.005
1.0064.001
4.0024.0021.006
1.0071.007
1.008
5.0005.000
5.001
13.950
13.95013.55013.699
13.55013.450
13.450
14.20013.955
13.95513.835
13.83513.690
13.69013.55013.350
12.75013.850
13.85013.34612.646
12.64612.601
12.601
14.50014.419
14.419
375
450450450
600600
600
450450
450450
450450
450450600
1200500
500500
1200
12001200
1200
300300
300
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Ground/Roof WaterSam Raven14/02/2020
Page 7
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
602
603
604
605
606
609
610
611
612
613
614
615
607
573738.259
573738.259
573731.316
573731.316
573720.872
573657.163
573657.163
573649.394
573649.394
573666.923
573666.924
573683.890
573683.892
157848.460
157888.375
157926.107
157951.824
157970.076
157828.822
157881.879
157881.879
157909.247
157909.244
157954.116
157954.116
157970.076
16.000
16.000
16.000
16.000
16.000
16.000
16.000
16.000
16.000
16.000
16.000
16.000
16.000
1.683
1.806
1.925
2.005
2.070
1.500
1.717
1.824
1.909
1.964
2.103
2.156
2.281
1350
1350
1350
1350
1350
1200
1200
1350
1350
1350
1350
1350
1350
1
0
1
0
1
0
1
0
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
2
0
1
01
01
01
01
0
01
01
01
01
01
01
012
0
5.001
5.0025.002
5.0035.003
5.0045.004
5.0055.005
5.006
7.0007.000
7.0017.001
7.0027.002
7.0037.003
7.0047.004
7.0057.005
7.0067.0065.006
5.007
14.392
14.31714.194
14.19414.075
14.07513.995
13.99513.930
13.930
14.50014.283
14.28314.251
14.17614.091
14.09114.036
14.03613.897
13.89713.844
13.84413.79413.794
13.719
300
375375
375375
375375
375375
375
300300
300300
375375
375375
375375
375375
375375375
450
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Ground/Roof WaterSam Raven14/02/2020
Page 8
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
503
504
121
122
573675.104
573583.946
573957.338
573943.346
157982.815
157981.007
157925.666
157973.902
19.300
13.000
16.900
17.000
6.773
2.000
0.900
2.300
2100
2100
1500
1500
1
20
1
0
1
0
12
01
01
0
5.0071.008
1.0091.009
4.0004.000
4.001
13.27712.527
12.52711.000
16.00014.700
14.700
4501200
12001200
500500
500
Simula on Se ngs
Rainfall MethodologyFSR Region
M5-60 (mm)Ra o-R
Summer CVWinter CV
Analysis Speed
FSREngland and Wales20.0000.4000.7500.840Detailed
Skip Steady StateDrain Down Time (mins)
Addi onal Storage (m³/ha)Check Discharge Rate(s)
Check Discharge Volume100 year 360 minute (m³)
✓150020.0✓✓
Storm Dura ons15 30 60 120 180 240 360 480 600 720 960 1440
Return Period(years)
Climate Change(CC %)
Addi onal Area(A %)
Addi onal Flow(Q %)
130
100
00
40
000
000
Pre-development Discharge Rate
Site MakeupGreen eld Method
Posi vely Drained Area (ha)SAAR (mm)
Soil IndexSPR
RegionGrowth Factor 1 year
Green eldIH124
10.1010.85
Growth Factor 30 yearGrowth Factor 100 year
Be erment (%)QBar
Q 1 year (l/s)Q 30 year (l/s)
Q 100 year (l/s)
1.952.480
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Ground/Roof WaterSam Raven14/02/2020
Page 9
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Pre-development Discharge Volume
Site MakeupGreen eld Method
Posi vely Drained Area (ha)Soil Index
SPRCWI
Green eldFSR/FEH
10.10
Return Period (years)Climate Change (%)
Storm Dura on (mins)Be erment (%)
PRRuno Volume (m³)
10003600
Other (defaults)
Entry Loss (manhole)Exit Loss (manhole)
0.2500.250
Entry Loss (junc on)Exit Loss (junc on)
0.0000.000
Apply Recommended LossesFlood Risk (m)
x0.300
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Ground/Roof WaterSam Raven14/02/2020
Page 10
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 1 year Cri cal Storm Dura on. Lowest mass balance: 99.19%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 6 10 19.191 0.091 37.8 0.3887 0.0000 OK
15 minute winter 6 1.000 6.1 36.9 2.500 0.331 0.8533
15 minute winter 6.1 10 16.335 0.085 41.4 0.1526 0.0000 OK
15 minute winter 6.1 1.001 7 41.2 1.847 0.065 0.1593
15 minute winter 7 10 16.069 0.094 62.8 0.2692 0.0000 OK
15 minute winter 7 1.002 5 62.2 1.748 0.099 1.3883
15 minute winter 5 10 14.707 0.157 105.5 0.9134 0.0000 OK
15 minute winter 5 1.003 4 105.0 2.016 0.256 3.0314
15 minute winter 1 10 17.234 0.074 36.4 0.2050 0.0000 OK
15 minute winter 1 2.000 1.1 36.0 1.488 0.086 1.4078
15 minute winter 1.1 10 14.833 0.133 38.7 0.2156 0.0000 OK
15 minute winter 1.1 2.001 2 38.4 1.190 0.208 0.1909
15 minute winter 2 10 14.768 0.148 62.1 0.4538 0.0000 OK
15 minute winter 2 2.002 2.1 61.3 1.424 0.313 1.6747
15 minute winter 2.1 11 14.416 0.166 64.1 0.2772 0.0000 OK
15 minute winter 2.1 2.003 3 64.2 1.029 0.418 3.1595
15 minute winter 3 11 14.198 0.248 132.9 1.7678 0.0000 OK
15 minute winter 3 2.004 4 130.2 1.173 0.609 10.0036
15 minute winter 4 11 13.896 0.346 237.9 0.4480 0.0000 OK
15 minute winter 4 1.004 In 233.9 1.500 0.567 4.3210
15 minute winter In 12 13.756 0.306 236.2 0.3873 0.0000 OK
15 minute winter In 1.005 125 237.6 1.794 0.423 1.9833
15 minute winter 25.4 10 14.280 0.080 15.1 0.2358 0.0000 OK
15 minute winter 25.4 3.000 25.1 14.7 0.731 0.069 1.1658
15 minute winter 25.1 11 14.047 0.092 14.7 0.1316 0.0000 OK
15 minute winter 25.1 3.001 25.2 14.3 0.653 0.089 1.0682
15 minute winter 25.2 13 13.922 0.087 14.3 0.1251 0.0000 OK
15 minute winter 25.2 3.002 25.3 13.8 0.749 0.081 0.9467
15 minute winter 25.3 14 13.761 0.071 13.8 0.0803 0.0000 OK
15 minute winter 25.3 3.003 125 13.4 0.858 0.052 0.3419
15 minute winter 125 12 13.067 0.317 248.8 1.1216 0.0000 OK
15 minute winter 125 1.006 501 245.7 0.908 0.119 11.6568
15 minute winter 123 12 13.966 0.116 46.1 0.2273 0.0000 OK
15 minute winter 123 4.002 501 44.4 1.310 0.117 2.1671
15 minute winter 501 13 13.027 0.381 296.8 1.3697 0.0000 OK
15 minute winter 501 1.007 502 294.1 1.029 0.223 13.0088
15 minute winter 502 13 12.944 0.343 306.4 1.3155 0.0000 OK
15 minute winter 502 1.008 503 304.9 1.525 0.229 15.1621
15 minute winter 600 10 14.586 0.086 12.1 0.1962 0.0000 OK
15 minute winter 600 5.000 601 11.9 0.700 0.167 0.3333
15 minute winter 601 11 14.508 0.089 11.9 0.1005 0.0000 OK
15 minute winter 601 5.001 602 11.8 0.719 0.166 0.1071
15 minute winter 602 10 14.457 0.140 32.0 0.4432 0.0000 OK
15 minute winter 602 5.002 603 31.7 0.847 0.287 1.5024
15 minute winter 603 11 14.335 0.141 31.7 0.2011 0.0000 OK
15 minute winter 603 5.003 604 31.3 0.838 0.283 1.4511
15 minute winter 604 12 14.218 0.143 31.3 0.2046 0.0000 OK
15 minute winter 604 5.004 605 31.1 0.739 0.280 1.0934
15 minute winter 605 12 14.159 0.164 38.9 0.3470 0.0000 OK
15 minute winter 605 5.005 606 38.6 0.829 0.349 0.9794
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Ground/Roof WaterSam Raven14/02/2020
Page 11
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 1 year Cri cal Storm Dura on. Lowest mass balance: 99.19%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 606 12 14.095 0.165 46.5 0.3446 0.0000 OK
15 minute winter 606 5.006 607 45.1 1.022 0.373 1.6457
15 minute winter 609 10 14.634 0.134 29.0 0.5204 0.0000 OK
15 minute winter 609 7.000 610 28.3 0.904 0.400 1.6781
15 minute winter 610 11 14.427 0.144 28.3 0.1626 0.0000 OK
15 minute winter 610 7.001 611 28.3 0.910 0.399 0.2418
15 minute winter 611 11 14.342 0.166 40.6 0.4059 0.0000 OK
15 minute winter 611 7.002 612 40.5 0.856 0.366 1.2962
15 minute winter 612 12 14.260 0.169 40.5 0.2412 0.0000 OK
15 minute winter 612 7.003 613 40.1 0.846 0.360 0.8339
15 minute winter 613 12 14.202 0.166 43.9 0.2922 0.0000 OK
15 minute winter 613 7.004 614 44.0 0.830 0.397 2.3770
15 minute winter 614 12 14.094 0.197 52.5 0.4215 0.0000 OK
15 minute winter 614 7.005 615 51.6 0.900 0.464 0.9732
15 minute winter 615 12 14.034 0.190 53.0 0.2928 0.0000 OK
15 minute winter 615 7.006 607 52.4 1.020 0.471 0.8201
15 minute winter 607 13 13.860 0.141 97.5 0.2023 0.0000 OK
15 minute winter 607 5.007 503 98.0 2.474 0.179 0.6131
15 minute winter 503 13 12.751 0.224 415.4 0.8799 0.0000 OK
15 minute winter 503 1.009 504 411.5 2.934 0.075 12.7980 219.1
15 minute winter 504 14 11.215 0.215 411.5 0.0000 0.0000 OK15 minute winter 121 10 16.044 0.044 11.3 0.1551 0.0000 OK
15 minute winter 121 4.000 122 11.0 0.716 0.016 0.8122
15 minute winter 122 11 14.791 0.091 32.7 0.2820 0.0000 OK
15 minute winter 122 4.001 123 31.6 1.109 0.074 2.5064
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Ground/Roof WaterSam Raven14/02/2020
Page 12
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 30 year Cri cal Storm Dura on. Lowest mass balance: 99.19%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 6 10 19.260 0.160 92.7 0.6865 0.0000 OK
15 minute winter 6 1.000 6.1 90.6 3.076 0.813 1.7057
15 minute winter 6.1 10 16.393 0.143 101.7 0.2586 0.0000 OK
15 minute winter 6.1 1.001 7 101.4 2.274 0.159 0.3181
15 minute winter 7 10 16.124 0.149 154.2 0.4256 0.0000 OK
15 minute winter 7 1.002 5 153.2 2.218 0.244 2.6716
15 minute winter 5 10 14.811 0.261 259.4 1.5166 0.0000 OK
15 minute winter 5 1.003 4 265.0 2.108 0.647 6.7327
15 minute winter 1 10 17.276 0.116 89.3 0.3227 0.0000 OK
15 minute winter 1 2.000 1.1 88.5 1.735 0.213 3.9625
15 minute winter 1.1 12 15.399 0.699 95.1 1.1330 0.0000 SURCHARGED
15 minute winter 1.1 2.001 2 86.0 1.322 0.467 0.6500
15 minute winter 2 12 15.378 0.758 135.7 2.3152 0.0000 SURCHARGED
15 minute winter 2 2.002 2.1 128.9 1.617 0.658 4.2548
15 minute winter 2.1 12 15.207 0.957 135.4 1.5961 0.0000 SURCHARGED
15 minute winter 2.1 2.003 3 136.7 1.240 0.891 5.6025
15 minute winter 3 12 14.970 1.020 277.2 7.2741 0.0000 SURCHARGED
15 minute winter 3 2.004 4 270.4 1.707 1.264 14.3878
15 minute winter 4 11 14.238 0.687 522.6 0.8896 0.0000 SURCHARGED
15 minute winter 4 1.004 In 521.2 1.852 1.264 7.6092
15 minute winter In 12 13.991 0.541 526.5 0.6844 0.0000 OK
15 minute winter In 1.005 125 527.2 2.130 0.938 3.6760
15 minute winter 25.4 10 14.326 0.126 37.0 0.3738 0.0000 OK
15 minute winter 25.4 3.000 25.1 36.4 0.917 0.170 2.2508
15 minute winter 25.1 11 14.103 0.148 36.4 0.2122 0.0000 OK
15 minute winter 25.1 3.001 25.2 35.9 0.833 0.224 2.0895
15 minute winter 25.2 12 13.975 0.140 35.9 0.1997 0.0000 OK
15 minute winter 25.2 3.002 25.3 34.8 0.958 0.202 1.8623
15 minute winter 25.3 13 13.807 0.117 34.8 0.1319 0.0000 OK
15 minute winter 25.3 3.003 125 34.9 1.117 0.135 0.6853
15 minute winter 125 12 13.285 0.535 560.0 1.8911 0.0000 OK
15 minute winter 125 1.006 501 553.0 1.069 0.267 22.3219
15 minute winter 123 11 14.042 0.192 115.0 0.3749 0.0000 OK
15 minute winter 123 4.002 501 112.7 1.688 0.298 4.2799
15 minute winter 501 12 13.237 0.591 682.7 2.1261 0.0000 OK
15 minute winter 501 1.007 502 676.8 1.339 0.512 23.2994
15 minute winter 502 12 13.124 0.523 722.1 2.0088 0.0000 OK
15 minute winter 502 1.008 503 723.1 1.950 0.544 27.7182
15 minute winter 600 10 14.645 0.145 29.8 0.3309 0.0000 OK
15 minute winter 600 5.000 601 29.3 0.807 0.412 0.7199
15 minute winter 601 11 14.585 0.166 29.3 0.1877 0.0000 OK
15 minute winter 601 5.001 602 29.0 0.781 0.406 0.2627
15 minute winter 602 11 14.561 0.244 78.5 0.7699 0.0000 OK
15 minute winter 602 5.002 603 77.4 1.032 0.701 3.0405
15 minute winter 603 11 14.440 0.246 77.4 0.3513 0.0000 OK
15 minute winter 603 5.003 604 76.5 0.977 0.690 3.1116
15 minute winter 604 12 14.348 0.273 76.5 0.3902 0.0000 OK
15 minute winter 604 5.004 605 74.4 0.835 0.671 2.3375
15 minute winter 605 12 14.300 0.305 94.7 0.6430 0.0000 OK
15 minute winter 605 5.005 606 93.7 0.987 0.847 1.9961
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Ground/Roof WaterSam Raven14/02/2020
Page 13
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 30 year Cri cal Storm Dura on. Lowest mass balance: 99.19%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 606 12 14.228 0.298 113.9 0.6220 0.0000 OK
15 minute winter 606 5.006 607 111.7 1.307 0.925 3.1556
15 minute winter 609 11 14.752 0.252 71.3 0.9770 0.0000 OK
15 minute winter 609 7.000 610 68.6 1.083 0.970 3.4548
15 minute winter 610 12 14.555 0.272 68.6 0.3077 0.0000 OK
15 minute winter 610 7.001 611 67.9 1.094 0.957 0.4993
15 minute winter 611 12 14.495 0.319 98.2 0.7822 0.0000 OK
15 minute winter 611 7.002 612 96.8 1.005 0.873 2.8008
15 minute winter 612 12 14.429 0.338 96.8 0.4842 0.0000 OK
15 minute winter 612 7.003 613 93.3 0.960 0.837 1.8481
15 minute winter 613 12 14.381 0.345 103.7 0.6063 0.0000 OK
15 minute winter 613 7.004 614 100.1 0.942 0.904 4.8530
15 minute winter 614 12 14.269 0.372 122.4 0.7950 0.0000 OK
15 minute winter 614 7.005 615 121.7 1.131 1.094 1.8128
15 minute winter 615 12 14.177 0.333 125.3 0.5143 0.0000 OK
15 minute winter 615 7.006 607 124.6 1.331 1.119 1.4780
15 minute winter 607 12 13.961 0.242 236.3 0.3466 0.0000 OK
15 minute winter 607 5.007 503 235.3 3.018 0.430 1.2081
15 minute winter 503 13 12.885 0.358 988.7 1.4036 0.0000 OK
15 minute winter 503 1.009 504 1000.3 3.724 0.183 24.5023 538.9
15 minute winter 504 13 11.334 0.334 1000.3 0.0000 0.0000 OK15 minute winter 121 10 16.067 0.067 27.7 0.2379 0.0000 OK
15 minute winter 121 4.000 122 27.3 0.922 0.040 1.5366
15 minute winter 122 11 14.842 0.142 80.6 0.4426 0.0000 OK
15 minute winter 122 4.001 123 78.1 1.395 0.184 4.9188
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Ground/Roof WaterSam Raven14/02/2020
Page 14
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year +40% CC Cri cal Storm Dura on. Lowest mass balance: 99.19%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 6 12 20.798 1.698 168.5 7.2749 0.0000 FLOOD RISK
15 minute winter 6 1.000 6.1 134.3 3.376 1.205 2.3014
15 minute winter 6.1 11 16.438 0.188 152.2 0.3386 0.0000 OK
15 minute winter 6.1 1.001 7 151.9 2.518 0.239 0.5235
15 minute winter 7 11 16.211 0.236 242.4 0.6741 0.0000 OK
15 minute winter 7 1.002 5 239.2 2.229 0.380 4.5979
15 minute winter 5 11 15.796 1.246 424.7 7.2485 0.0000 FLOOD RISK
15 minute winter 5 1.003 4 410.1 2.589 1.001 8.4118
15 minute winter 1 11 17.356 0.196 162.2 0.5438 0.0000 OK
15 minute winter 1 2.000 1.1 155.4 1.802 0.374 4.8230
15 minute winter 1.1 11 16.700 2.000 166.6 3.2420 1.6797 FLOOD
15 minute winter 1.1 2.001 2 154.7 1.403 0.840 0.6500
15 minute winter 2 11 16.631 2.011 242.4 6.1443 0.0000 FLOOD RISK
15 minute winter 2 2.002 2.1 238.7 2.165 1.218 4.2548
15 minute winter 2.1 10 15.950 1.700 250.5 2.8339 28.5854 FLOOD
15 minute winter 2.1 2.003 3 164.6 1.493 1.073 5.6025
15 minute winter 3 10 15.735 1.785 439.3 12.7342 16.3036 FLOOD
15 minute winter 3 2.004 4 325.3 2.053 1.521 14.3878
15 minute winter 4 11 14.757 1.207 735.9 1.5624 0.0000 SURCHARGED
15 minute winter 4 1.004 In 736.0 2.613 1.786 7.8027
15 minute winter In 11 14.268 0.818 745.6 1.0337 0.0000 SURCHARGED
15 minute winter In 1.005 125 745.3 2.648 1.326 4.1206
15 minute winter 25.4 10 14.375 0.175 67.3 0.5187 0.0000 OK
15 minute winter 25.4 3.000 25.1 66.3 1.058 0.311 3.5224
15 minute winter 25.1 11 14.162 0.207 66.3 0.2965 0.0000 OK
15 minute winter 25.1 3.001 25.2 65.8 0.971 0.410 3.2690
15 minute winter 25.2 12 14.028 0.193 65.8 0.2768 0.0000 OK
15 minute winter 25.2 3.002 25.3 64.2 1.116 0.374 2.9278
15 minute winter 25.3 13 13.852 0.162 64.2 0.1832 0.0000 OK
15 minute winter 25.3 3.003 125 64.2 1.315 0.249 1.0707
15 minute winter 125 12 13.450 0.700 807.0 2.4736 0.0000 OK
15 minute winter 125 1.006 501 803.5 1.143 0.387 30.6927
15 minute winter 123 11 14.126 0.276 211.4 0.5388 0.0000 OK
15 minute winter 123 4.002 501 208.2 1.967 0.550 6.7960
15 minute winter 501 12 13.400 0.754 1039.6 2.7125 0.0000 OK
15 minute winter 501 1.007 502 1033.4 1.517 0.782 31.3563
15 minute winter 502 12 13.259 0.658 1108.0 2.5276 0.0000 OK
15 minute winter 502 1.008 503 1108.9 2.181 0.834 38.4378
15 minute winter 600 12 15.235 0.735 54.1 1.6745 0.0000 SURCHARGED
15 minute winter 600 5.000 601 46.4 0.827 0.653 1.3829
15 minute winter 601 12 15.189 0.770 46.4 0.8710 0.0000 SURCHARGED
15 minute winter 601 5.001 602 46.9 0.790 0.658 0.4575
15 minute winter 602 12 15.170 0.853 129.0 2.6900 0.0000 SURCHARGED
15 minute winter 602 5.002 603 121.3 1.128 1.098 4.4025
15 minute winter 603 12 15.002 0.808 121.3 1.1559 0.0000 SURCHARGED
15 minute winter 603 5.003 604 120.6 1.094 1.089 4.2315
15 minute winter 604 12 14.825 0.750 120.6 1.0726 0.0000 SURCHARGED
15 minute winter 604 5.004 605 121.6 1.103 1.096 2.8365
15 minute winter 605 12 14.688 0.693 155.5 1.4631 0.0000 SURCHARGED
15 minute winter 605 5.005 606 154.8 1.404 1.400 2.3194
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Ground/Roof WaterSam Raven14/02/2020
Page 15
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year +40% CC Cri cal Storm Dura on. Lowest mass balance: 99.19%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 606 12 14.507 0.577 192.6 1.2052 0.0000 SURCHARGED
15 minute winter 606 5.006 607 191.0 1.744 1.581 3.8843
15 minute winter 609 11 16.000 1.500 129.5 5.8170 1.5450 FLOOD
15 minute winter 609 7.000 610 99.6 1.415 1.408 3.7362
15 minute winter 610 11 15.520 1.237 99.6 1.3988 0.0000 SURCHARGED
15 minute winter 610 7.001 611 100.4 1.426 1.414 0.5471
15 minute winter 611 11 15.409 1.233 153.0 3.0210 0.0000 SURCHARGED
15 minute winter 611 7.002 612 150.0 1.360 1.352 3.0186
15 minute winter 612 12 15.208 1.117 150.0 1.5988 0.0000 SURCHARGED
15 minute winter 612 7.003 613 149.8 1.359 1.344 1.9334
15 minute winter 613 12 15.061 1.025 166.9 1.8011 0.0000 SURCHARGED
15 minute winter 613 7.004 614 167.4 1.517 1.511 4.9493
15 minute winter 614 11 14.686 0.789 208.5 1.6841 0.0000 SURCHARGED
15 minute winter 614 7.005 615 206.4 1.872 1.856 1.8713
15 minute winter 615 11 14.409 0.565 213.5 0.8717 0.0000 SURCHARGED
15 minute winter 615 7.006 607 213.6 1.939 1.918 1.7050
15 minute winter 607 12 14.082 0.363 404.6 0.5196 0.0000 OK
15 minute winter 607 5.007 503 405.4 3.334 0.740 1.8698
15 minute winter 503 12 12.995 0.468 1590.9 1.8371 0.0000 OK
15 minute winter 503 1.009 504 1580.9 4.181 0.288 34.7654 927.7
15 minute winter 504 12 11.424 0.424 1580.9 0.0000 0.0000 OK15 minute winter 121 10 16.090 0.090 50.3 0.3179 0.0000 OK
15 minute winter 121 4.000 122 49.7 1.076 0.072 2.3897
15 minute winter 122 10 14.897 0.197 146.5 0.6108 0.0000 OK
15 minute winter 122 4.001 123 142.9 1.609 0.336 7.7551
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Southern Ground Water NetworkSam Raven14/02/2020
Page 1
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Design Se ngs
Rainfall MethodologyReturn Period (years)
Addi onal Flow (%)FSR Region
M5-60 (mm)Ra o-R
CVTime of Entry (mins)
FSR10England and Wales20.0000.4000.7505.00
Maximum Time of Concentra on (mins)Maximum Rainfall (mm/hr)
Minimum Velocity (m/s)Connec on Type
Minimum Backdrop Height (m)Preferred Cover Depth (m)
Include Intermediate GroundEnforce best prac ce design rules
30.0050.01.00Level So ts0.2001.200✓✓
Nodes
Name Area(ha)
T of E(mins)
CoverLevel(m)
Diameter(mm)
Eas ng(m)
Northing(m)
Depth(m)
400401402403404405406407408409410411412413
0.0420.0450.0890.1120.0530.0580.1270.1130.0950.1000.0690.1230.105
5.005.005.005.005.005.005.005.005.005.005.005.005.00
23.75021.00021.30021.20020.80021.20018.90018.80018.80018.75018.70018.80019.00013.000
13501350150015001500150015001500150015001500150015001500
573998.353573954.621573910.739573829.585573748.430573734.709573733.806573727.290573661.078573594.867573528.655573501.422573499.699573497.976
157731.541157712.624157694.337157694.454157694.570157708.104157753.397157759.866157759.876157759.886157759.886157786.829157865.150157943.471
1.6421.6462.1382.2032.3443.2041.7961.7961.9101.9742.0382.2042.5602.000
Links
Name USNode
DSNode
Length(m)
ks (mm) /n
US IL(m)
DS IL(m)
Fall(m)
Slope(1:X)
Dia(mm)
T of C(mins)
Rain(mm/hr)
Name Vel(m/s)
Cap(l/s)
Flow(l/s)
USDepth
(m)
DSDepth
(m)
Σ Area(ha)
Σ AddIn ow
(l/s)
ProDepth(mm)
ProVelocity
(m/s)
1.000 400 401 47.648 0.600 22.108 19.354 2.754 17.3 450 5.16 50.0
1.000 4.905 780.1 5.7 1.192 1.196 0.042 0.0 27 1.464
1.001 401 402 47.540 0.600 19.354 19.237 0.117 406.3 450 5.95 50.0
1.001 1.002 159.4 11.8 1.196 1.613 0.087 0.0 82 0.595
1.002 402 403 81.154 0.600 19.162 18.997 0.165 491.8 525 7.30 45.8
1.002 1.003 217.1 21.8 1.613 1.678 0.176 0.0 112 0.651
1.003 403 404 81.155 0.600 18.997 18.456 0.541 150.0 525 8.04 43.5
1.003 1.826 395.3 34.0 1.678 1.819 0.288 0.0 103 1.135
1.004 404 405 19.273 0.600 18.456 18.071 0.385 50.1 525 8.14 43.3
1.004 3.171 686.4 40.0 1.819 2.604 0.341 0.0 85 1.766
1.005 405 406 45.302 0.600 17.996 17.104 0.892 50.8 600 8.36 42.6
1.005 3.422 967.5 46.1 2.604 1.196 0.399 0.0 88 1.799
1.006 406 407 9.182 0.600 17.104 17.004 0.100 91.8 600 8.42 42.5
1.006 2.542 718.6 60.6 1.196 1.196 0.526 0.0 116 1.575
1.007 407 408 66.212 0.600 17.004 16.890 0.114 580.8 600 9.52 39.8
1.007 1.003 283.6 68.9 1.196 1.310 0.639 0.0 201 0.834
1.008 408 409 66.211 0.600 16.890 16.776 0.114 580.8 600 10.62 37.6
1.008 1.003 283.6 74.8 1.310 1.374 0.734 0.0 209 0.852
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Southern Ground Water NetworkSam Raven14/02/2020
Page 2
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Links
Name USNode
DSNode
Length(m)
ks (mm) /n
US IL(m)
DS IL(m)
Fall(m)
Slope(1:X)
Dia(mm)
T of C(mins)
Rain(mm/hr)
Name Vel(m/s)
Cap(l/s)
Flow(l/s)
USDepth
(m)
DSDepth
(m)
Σ Area(ha)
Σ AddIn ow
(l/s)
ProDepth(mm)
ProVelocity
(m/s)
1.009 409 410 66.212 0.600 16.776 16.662 0.114 580.8 600 11.72 35.6
1.009 1.003 283.6 80.5 1.374 1.438 0.834 0.0 218 0.868
1.010 410 411 38.309 0.600 16.662 16.596 0.066 580.4 600 12.36 34.6
1.010 1.003 283.7 84.7 1.438 1.604 0.903 0.0 224 0.881
1.011 411 412 78.340 0.600 16.596 16.440 0.156 502.2 600 13.57 32.8
1.011 1.080 305.2 91.2 1.604 1.960 1.026 0.0 224 0.948
1.012 412 413 78.340 0.600 16.440 11.000 5.440 14.4 600 13.77 32.6
1.012 6.438 1820.2 99.9 1.960 1.400 1.131 0.0 94 3.535
Pipeline Schedule
Link Length(m)
Slope(1:X)
Dia(mm)
LinkType
US CL(m)
US IL(m)
US Depth(m)
DS CL(m)
DS IL(m)
DS Depth(m)
Link USNode
Dia(mm)
NodeType
MHType
DSNode
Dia(mm)
NodeType
MHType
1.000 47.648 17.3 450 Circular_Default Sewer Type 23.750 22.108 1.192 21.000 19.354 1.196
1.000 400 1350 Manhole Adoptable 401 1350 Manhole Adoptable
1.001 47.540 406.3 450 Circular_Default Sewer Type 21.000 19.354 1.196 21.300 19.237 1.613
1.001 401 1350 Manhole Adoptable 402 1500 Manhole Adoptable
1.002 81.154 491.8 525 Circular_Default Sewer Type 21.300 19.162 1.613 21.200 18.997 1.678
1.002 402 1500 Manhole Adoptable 403 1500 Manhole Adoptable
1.003 81.155 150.0 525 Circular_Default Sewer Type 21.200 18.997 1.678 20.800 18.456 1.819
1.003 403 1500 Manhole Adoptable 404 1500 Manhole Adoptable
1.004 19.273 50.1 525 Circular_Default Sewer Type 20.800 18.456 1.819 21.200 18.071 2.604
1.004 404 1500 Manhole Adoptable 405 1500 Manhole Adoptable
1.005 45.302 50.8 600 Circular_Default Sewer Type 21.200 17.996 2.604 18.900 17.104 1.196
1.005 405 1500 Manhole Adoptable 406 1500 Manhole Adoptable
1.006 9.182 91.8 600 Circular_Default Sewer Type 18.900 17.104 1.196 18.800 17.004 1.196
1.006 406 1500 Manhole Adoptable 407 1500 Manhole Adoptable
1.007 66.212 580.8 600 Circular_Default Sewer Type 18.800 17.004 1.196 18.800 16.890 1.310
1.007 407 1500 Manhole Adoptable 408 1500 Manhole Adoptable
1.008 66.211 580.8 600 Circular_Default Sewer Type 18.800 16.890 1.310 18.750 16.776 1.374
1.008 408 1500 Manhole Adoptable 409 1500 Manhole Adoptable
1.009 66.212 580.8 600 Circular_Default Sewer Type 18.750 16.776 1.374 18.700 16.662 1.438
1.009 409 1500 Manhole Adoptable 410 1500 Manhole Adoptable
1.010 38.309 580.4 600 Circular_Default Sewer Type 18.700 16.662 1.438 18.800 16.596 1.604
1.010 410 1500 Manhole Adoptable 411 1500 Manhole Adoptable
1.011 78.340 502.2 600 Circular_Default Sewer Type 18.800 16.596 1.604 19.000 16.440 1.960
1.011 411 1500 Manhole Adoptable 412 1500 Manhole Adoptable
1.012 78.340 14.4 600 Circular_Default Sewer Type 19.000 16.440 1.960 13.000 11.000 1.400
1.012 412 1500 Manhole Adoptable 413 1500 Manhole Adoptable
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Southern Ground Water NetworkSam Raven14/02/2020
Page 3
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
400
401
402
403
404
405
406
407
408
409
410
411
412
573998.353
573954.621
573910.739
573829.585
573748.430
573734.709
573733.806
573727.290
573661.078
573594.867
573528.655
573501.422
573499.699
157731.541
157712.624
157694.337
157694.454
157694.570
157708.104
157753.397
157759.866
157759.876
157759.886
157759.886
157786.829
157865.150
23.750
21.000
21.300
21.200
20.800
21.200
18.900
18.800
18.800
18.750
18.700
18.800
19.000
1.642
1.646
2.138
2.203
2.344
3.204
1.796
1.796
1.910
1.974
2.038
2.204
2.560
1350
1350
1500
1500
1500
1500
1500
1500
1500
1500
1500
1500
1500
0
1
0
10
10
1
0
1
0
1
0
1
0
10
10
1
0
1
0
1
0
01
01
01
01
01
01
01
01
01
01
01
01
0
1.0001.000
1.0011.001
1.0021.002
1.0031.003
1.0041.004
1.0051.005
1.0061.006
1.0071.007
1.0081.008
1.0091.009
1.0101.010
1.0111.011
1.012
22.10819.354
19.35419.237
19.16218.997
18.99718.456
18.45618.071
17.99617.104
17.10417.004
17.00416.890
16.89016.776
16.77616.662
16.66216.596
16.59616.440
16.440
450450
450450
525525
525525
525525
600600
600600
600600
600600
600600
600600
600600
600
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Southern Ground Water NetworkSam Raven14/02/2020
Page 4
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
413 573497.976 157943.471 13.000 2.000 1500
1
1 1.012 11.000 600
Simula on Se ngs
Rainfall MethodologyFSR Region
M5-60 (mm)Ra o-R
Summer CVWinter CV
Analysis Speed
FSREngland and Wales20.0000.4000.7500.840Detailed
Skip Steady StateDrain Down Time (mins)
Addi onal Storage (m³/ha)Check Discharge Rate(s)
Check Discharge Volume100 year 360 minute (m³)
✓150020.0✓✓
Storm Dura ons15 30 60 120 180 240 360 480 600 720 960 1440
Return Period(years)
Climate Change(CC %)
Addi onal Area(A %)
Addi onal Flow(Q %)
130
100
00
40
000
000
Pre-development Discharge Rate
Site MakeupGreen eld Method
Posi vely Drained Area (ha)SAAR (mm)
Soil IndexSPR
RegionGrowth Factor 1 year
Green eldIH124
10.1010.85
Growth Factor 30 yearGrowth Factor 100 year
Be erment (%)QBar
Q 1 year (l/s)Q 30 year (l/s)
Q 100 year (l/s)
1.952.480
Pre-development Discharge Volume
Site MakeupGreen eld Method
Posi vely Drained Area (ha)Soil Index
SPRCWI
Green eldFSR/FEH
10.10
Return Period (years)Climate Change (%)
Storm Dura on (mins)Be erment (%)
PRRuno Volume (m³)
10003600
Other (defaults)
Entry Loss (manhole)Exit Loss (manhole)
0.2500.250
Entry Loss (junc on)Exit Loss (junc on)
0.0000.000
Apply Recommended LossesFlood Risk (m)
x0.300
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Southern Ground Water NetworkSam Raven14/02/2020
Page 5
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 1 year Cri cal Storm Dura on. Lowest mass balance: 99.22%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 400 10 22.136 0.028 5.9 0.0537 0.0000 OK
15 minute winter 400 1.000 401 5.8 0.608 0.007 0.5545
15 minute winter 401 11 19.435 0.081 12.1 0.1604 0.0000 OK
15 minute winter 401 1.001 402 10.9 0.624 0.068 0.8303
15 minute winter 402 11 19.275 0.113 22.4 0.2943 0.0000 OK
15 minute winter 402 1.002 403 21.8 0.666 0.101 2.6631
15 minute winter 403 12 19.105 0.108 36.3 0.2995 0.0000 OK
15 minute winter 403 1.003 404 35.0 1.243 0.089 2.2902
15 minute winter 404 12 18.546 0.090 40.8 0.2006 0.0000 OK
15 minute winter 404 1.004 405 40.7 1.716 0.059 0.4571
15 minute winter 405 12 18.084 0.088 47.1 0.1882 0.0000 OK
15 minute winter 405 1.005 406 47.1 1.254 0.049 1.7313
15 minute winter 406 12 17.246 0.142 61.5 0.4506 0.0000 OK
15 minute winter 406 1.006 407 61.5 0.885 0.086 0.6433
15 minute winter 407 12 17.217 0.213 74.1 0.6437 0.0000 OK
15 minute winter 407 1.007 408 74.3 0.805 0.262 6.1154
15 minute winter 408 13 17.115 0.225 84.8 0.6224 0.0000 OK
15 minute winter 408 1.008 409 82.3 0.830 0.290 6.5647
15 minute winter 409 13 17.010 0.234 90.8 0.6504 0.0000 OK
15 minute winter 409 1.009 410 88.1 0.847 0.311 6.9129
15 minute winter 410 14 16.905 0.243 92.7 0.5947 0.0000 OK
15 minute winter 410 1.010 411 90.6 0.881 0.320 3.9439
15 minute winter 411 15 16.825 0.229 97.5 0.6613 0.0000 OK
15 minute winter 411 1.011 412 96.9 1.572 0.318 5.0157
15 minute winter 412 15 16.536 0.096 100.9 0.2487 0.0000 OK
15 minute winter 412 1.012 413 101.4 3.536 0.056 2.2468 73.5
15 minute winter 413 15 11.094 0.094 101.4 0.0000 0.0000 OK
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Southern Ground Water NetworkSam Raven14/02/2020
Page 6
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 30 year Cri cal Storm Dura on. Lowest mass balance: 99.22%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 400 10 22.150 0.042 14.5 0.0816 0.0000 OK
15 minute winter 400 1.000 401 14.3 0.733 0.018 1.0825
15 minute winter 401 11 19.485 0.131 29.9 0.2587 0.0000 OK
15 minute winter 401 1.001 402 28.0 0.810 0.176 1.6544
15 minute winter 402 11 19.348 0.186 57.0 0.4843 0.0000 OK
15 minute winter 402 1.002 403 56.4 0.863 0.260 5.3420
15 minute winter 403 11 19.172 0.175 92.9 0.4883 0.0000 OK
15 minute winter 403 1.003 404 90.4 1.595 0.229 4.6182
15 minute winter 404 12 18.607 0.151 107.2 0.3350 0.0000 OK
15 minute winter 404 1.004 405 106.6 2.217 0.155 0.9266
15 minute winter 405 12 18.138 0.142 122.7 0.3014 0.0000 OK
15 minute winter 405 1.005 406 123.0 1.347 0.127 4.2732
15 minute winter 406 12 17.399 0.295 162.9 0.9392 0.0000 OK
15 minute winter 406 1.006 407 158.5 0.982 0.221 1.5083
15 minute winter 407 12 17.388 0.384 193.1 1.1620 0.0000 OK
15 minute winter 407 1.007 408 189.5 0.982 0.668 13.0498
15 minute winter 408 13 17.299 0.409 215.2 1.1294 0.0000 OK
15 minute winter 408 1.008 409 206.6 1.002 0.728 13.9145
15 minute winter 409 13 17.205 0.429 233.6 1.1932 0.0000 OK
15 minute winter 409 1.009 410 224.2 1.040 0.791 14.2827
15 minute winter 410 13 17.091 0.429 237.9 1.0489 0.0000 OK
15 minute winter 410 1.010 411 234.7 1.164 0.827 7.7860
15 minute winter 411 13 16.981 0.385 258.7 1.1087 0.0000 OK
15 minute winter 411 1.011 412 257.8 2.089 0.845 9.8265
15 minute winter 412 13 16.600 0.160 276.6 0.4133 0.0000 OK
15 minute winter 412 1.012 413 274.7 4.692 0.151 4.5968 180.4
15 minute winter 413 14 11.154 0.154 274.7 0.0000 0.0000 OK
Idom Merebrook Ltd File: Combined Networks.pfdNetwork: Southern Ground Water NetworkSam Raven14/02/2020
Page 7
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year +40% CC Cri cal Storm Dura on. Lowest mass balance: 99.22%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 400 10 22.164 0.056 26.4 0.1085 0.0000 OK
15 minute winter 400 1.000 401 26.1 0.832 0.034 1.7062
15 minute winter 401 11 19.537 0.183 54.4 0.3627 0.0000 OK
15 minute winter 401 1.001 402 53.1 0.857 0.333 2.9519
15 minute winter 402 11 19.427 0.265 107.1 0.6886 0.0000 OK
15 minute winter 402 1.002 403 105.3 1.013 0.485 8.4984
15 minute winter 403 11 19.245 0.248 171.5 0.6903 0.0000 OK
15 minute winter 403 1.003 404 168.8 1.848 0.427 7.4660
15 minute winter 404 11 18.672 0.216 200.2 0.4794 0.0000 OK
15 minute winter 404 1.004 405 197.3 2.579 0.287 1.4769
15 minute winter 405 13 18.225 0.229 230.5 0.4882 0.0000 OK
15 minute winter 405 1.005 406 229.1 1.356 0.237 8.6215
15 minute winter 406 12 18.228 1.124 304.2 3.5761 0.0000 SURCHARGED
15 minute winter 406 1.006 407 274.5 1.013 0.382 2.5864
15 minute winter 407 12 18.191 1.187 323.4 3.5919 0.0000 SURCHARGED
15 minute winter 407 1.007 408 321.4 1.141 1.133 18.6504
15 minute winter 408 12 18.016 1.126 368.0 3.1109 0.0000 SURCHARGED
15 minute winter 408 1.008 409 360.6 1.280 1.271 18.6501
15 minute winter 409 12 17.788 1.012 409.6 2.8139 0.0000 SURCHARGED
15 minute winter 409 1.009 410 404.6 1.437 1.427 18.6504
15 minute winter 410 12 17.504 0.842 438.5 2.0571 0.0000 SURCHARGED
15 minute winter 410 1.010 411 432.6 1.536 1.525 10.7908
15 minute winter 411 13 17.295 0.699 493.0 2.0155 0.0000 SURCHARGED
15 minute winter 411 1.011 412 484.5 2.394 1.587 14.8457
15 minute winter 412 13 16.667 0.227 522.9 0.5860 0.0000 OK
15 minute winter 412 1.012 413 524.9 5.572 0.288 7.3813 327.8
15 minute winter 413 13 11.216 0.216 524.9 0.0000 0.0000 OK
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 1
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Design Se ngs
Rainfall MethodologyReturn Period (years)
Addi onal Flow (%)FSR Region
M5-60 (mm)Ra o-R
CVTime of Entry (mins)
FSR10England and Wales20.0000.4000.7505.00
Maximum Time of Concentra on (mins)Maximum Rainfall (mm/hr)
Minimum Velocity (m/s)Connec on Type
Minimum Backdrop Height (m)Preferred Cover Depth (m)
Include Intermediate GroundEnforce best prac ce design rules
30.0050.01.00Level So ts0.2001.200✓✓
Nodes
Name Area(ha)
T of E(mins)
CoverLevel(m)
Diameter(mm)
Eas ng(m)
Northing(m)
Depth(m)
8.189.191011.11112151323200201202203204205206207220208209210211212221222226227228223224225229232230231213214215233
0.1490.3340.0720.1470.1650.1100.2270.1010.1720.2270.1220.1660.0900.0870.0260.0170.0970.0260.0660.3330.0700.2200.1280.0470.0000.5090.0000.2860.2440.0350.0000.0000.0000.1170.0970.0000.0000.3820.0000.0000.301
5.005.005.005.005.005.005.005.005.005.005.005.005.005.005.005.005.005.005.005.005.005.005.005.00
5.00
5.005.005.00
5.005.00
5.00
5.00
22.77521.19520.50020.36520.30517.75016.98515.60015.85015.70015.70022.80021.20020.50020.00020.00020.00018.00018.00018.00018.00018.00016.00016.00016.00018.00018.00018.00018.00018.00018.00018.00016.00016.00016.00016.00016.00016.00016.70016.65016.000
12001200120012001200120012001200120012001200120012001350135013501350135015001350150015001500150015001200120012001200120013501350135013501350135013501500150015001200
573964.128573903.757573783.104573815.762573793.734573793.282573792.915573792.104573813.784573848.269573883.275573969.788573908.237573837.463573766.689573751.390573743.186573742.665573730.685573693.541573689.580573648.475573647.807573644.436573638.682573585.352573584.540573617.829573605.759573604.037573583.878573583.728573589.735573656.168573662.313573655.552573642.823573641.617573666.836573714.010573767.873
157747.966157722.740157724.594157724.594157768.618157812.850157841.173157921.291157921.407157959.993157963.079157726.203157702.737157702.509157702.280157704.694157712.111157760.520157769.158157798.675157769.696157770.234157860.231157901.090157921.489157769.158157842.813157790.015157829.998157901.897157901.670157915.009157924.339157924.128157974.925157958.914157958.857157972.464157979.832157979.437157765.741
1.1251.4201.7101.8352.4151.6402.2201.5002.1501.2751.4202.3001.5001.5751.5751.6231.7331.7251.7621.3501.8631.9471.2671.3381.3751.6501.8311.6501.7531.9302.1303.0191.2661.1031.1411.1801.2081.5382.2772.2971.232
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 2
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Nodes
Name Area(ha)
T of E(mins)
CoverLevel(m)
Diameter(mm)
Eas ng(m)
Northing(m)
Depth(m)
2342402412352362372422432382392162172182192424.1192018.1171821221001011021031042.32.42523.423.323.2Pump inPond
0.1290.3210.0000.1670.1530.0000.1620.0000.0000.0000.0000.0000.0000.0000.0250.0000.1650.0920.1340.0570.1280.0660.0160.0740.3270.1170.3840.0090.0610.0370.0020.0060.0070.0030.179
5.005.00
5.005.00
5.00
5.00
5.005.005.005.005.005.005.00
20.0020.0020.0020.0020.00
5.005.005.005.005.005.005.00
16.00016.00016.00016.00016.00016.00016.00016.00016.00016.00016.80018.00017.35016.00015.72015.67021.18020.27021.96423.80020.50018.01016.00020.00020.00020.00018.00017.00015.76015.72515.69015.70015.81116.00016.00016.295
120012001200135013501350120012001500150015001500210012001200120012001200120012001200120012001200120012001200120012001200120012001200120012001200
573767.873573752.098573752.098573767.737573768.301573768.301573710.243573758.173573769.883573779.259573783.986573854.324573924.661573924.808573906.698573907.143573963.016573955.216573931.297573985.663573922.846573922.279573907.699574013.128573996.117573987.190573975.229573966.416573955.983573907.143573907.143573911.410573911.521573927.811573941.443573941.705
157826.351157826.351157886.305157886.305157921.824157966.422157974.668157974.410157973.841157974.039157979.360157979.360157979.360157965.830157963.318157922.805157782.339157805.877157745.584157763.323157762.521157824.029157850.640157771.795157783.189157824.817157833.208157871.639157869.600157862.434157912.610157912.581157920.740157921.131157925.902157942.505
1.3331.3071.4071.4331.4921.5661.2961.4031.7291.7422.5513.8853.3392.0341.6602.1701.5801.0700.9401.6001.4601.5802.2850.8001.2572.8241.4332.0701.3512.0402.3152.3502.5102.9503.0003.509
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 3
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Links
Name USNode
DSNode
Length(m)
ks (mm) /n
US IL(m)
DS IL(m)
Fall(m)
Slope(1:X)
Dia(mm)
T of C(mins)
Rain(mm/hr)
Name Vel(m/s)
Cap(l/s)
Flow(l/s)
USDepth
(m)
DSDepth
(m)
Σ Area(ha)
Σ AddIn ow
(l/s)
1.000 8.1 8 65.430 0.600 21.650 19.924 1.726 37.9 225 6.18 49.7
1.000 2.131 84.7 20.1 0.900 1.046 0.149 0.0
1.001 8 9 88.015 0.600 19.775 18.530 1.245 70.7 375 7.57 44.9
1.001 2.157 238.2 58.8 1.045 1.460 0.483 0.0
2.000 9.1 9 32.657 0.600 18.790 18.680 0.110 296.9 225 5.25 50.0
2.000 0.753 30.0 9.8 1.485 1.460 0.072 0.0
1.002 9 10 49.228 0.600 18.530 17.890 0.640 76.9 375 8.38 42.6
1.002 2.067 228.3 81.1 1.460 2.040 0.702 0.0
1.003 10 11.1 44.234 0.600 17.890 16.114 1.776 24.9 375 9.12 40.7
1.003 3.643 402.3 95.6 2.040 1.261 0.867 0.0
1.004 11.1 11 28.326 0.600 16.110 14.786 1.324 21.4 375 9.60 39.7
1.004 3.932 434.2 105.1 1.265 1.824 0.977 0.0
1.005 11 12 80.122 0.600 14.765 14.100 0.665 120.5 450 10.93 37.0
1.005 1.851 294.3 120.7 1.770 1.050 1.204 0.0
1.006 12 15 21.680 0.600 14.100 13.850 0.250 86.7 450 11.30 36.4
1.006 2.184 347.3 128.8 1.050 1.550 1.305 0.0
1.007 15 24.1 93.370 0.600 13.700 13.500 0.200 466.9 600 12.85 33.9
1.007 1.120 316.7 135.7 1.550 1.570 1.477 0.0
6.000 13 23 35.141 0.600 14.425 14.280 0.145 242.4 225 5.58 50.0
6.000 0.835 33.2 30.8 1.050 1.195 0.227 0.0
6.001 23 24 23.425 0.600 14.280 14.135 0.145 161.6 225 5.98 50.0
6.001 1.026 40.8 47.3 1.195 1.360 0.349 0.0
8.000 200 201 65.872 0.600 20.500 19.700 0.800 82.3 300 6.10 50.0
8.000 1.734 122.5 22.5 2.000 1.200 0.166 0.0
8.001 201 202 70.774 0.600 19.700 19.000 0.700 101.1 300 7.28 45.8
8.001 1.563 110.5 31.8 1.200 1.200 0.256 0.0
8.002 202 203 70.774 0.600 18.925 18.425 0.500 141.5 375 8.45 42.4
8.002 1.521 167.9 39.4 1.200 1.200 0.343 0.0
8.003 203 204 15.488 0.600 18.425 18.377 0.048 322.7 375 8.71 41.7
8.003 1.003 110.8 41.7 1.200 1.248 0.369 0.0
8.004 204 205 11.060 0.600 18.377 18.342 0.035 316.0 375 8.89 41.3
8.004 1.014 111.9 43.2 1.248 1.283 0.386 0.0
8.005 205 206 48.412 0.600 18.267 16.353 1.914 25.3 450 9.70 39.5
8.005 4.054 644.8 51.7 1.283 1.197 0.483 0.0
8.006 206 207 14.769 0.600 16.275 16.238 0.037 399.2 525 9.94 39.0
8.006 1.115 241.3 53.8 1.200 1.237 0.509 0.0
8.007 207 208 41.109 0.600 16.238 16.137 0.101 407.0 525 10.62 37.6
8.007 1.104 238.9 58.6 1.237 1.338 0.575 0.0
9.000 220 208 29.248 0.600 16.650 16.287 0.363 80.6 375 5.24 50.0
9.000 2.019 223.0 45.1 0.975 1.338 0.333 0.0
8.008 208 209 41.109 0.600 16.137 16.053 0.084 489.4 525 11.30 36.4
8.008 1.006 217.7 96.5 1.338 1.422 0.978 0.0
8.009 209 210 89.999 0.600 16.053 14.883 1.170 76.9 525 11.89 35.4
8.009 2.556 553.3 115.0 1.422 0.592 1.198 0.0
8.010 210 211 40.998 0.600 14.733 14.662 0.071 577.4 675 12.57 34.3
8.010 1.083 387.6 123.3 0.592 0.663 1.326 0.0
8.011 211 212 21.195 0.600 14.662 14.625 0.037 572.8 675 12.92 33.8
8.011 1.088 389.2 125.8 0.663 0.700 1.373 0.0
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 4
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Links
Name USNode
DSNode
Length(m)
ks (mm) /n
US IL(m)
DS IL(m)
Fall(m)
Slope(1:X)
Dia(mm)
T of C(mins)
Rain(mm/hr)
Name Vel(m/s)
Cap(l/s)
Flow(l/s)
USDepth
(m)
DSDepth
(m)
Σ Area(ha)
Σ AddIn ow
(l/s)
8.012 212 213 51.059 0.600 14.625 14.537 0.088 580.2 675 13.77 32.6
8.012 1.081 386.7 121.3 0.700 0.788 1.373 0.0
10.000 221 222 73.659 0.600 16.350 16.169 0.181 407.0 450 6.23 49.5
10.000 1.001 159.2 68.3 1.200 1.381 0.509 0.0
10.001 222 223 58.861 0.600 16.169 16.020 0.149 395.0 450 7.07 46.5
10.001 1.017 161.7 64.2 1.381 1.530 0.509 0.0
11.000 226 227 41.765 0.600 16.350 16.247 0.103 405.5 450 5.70 50.0
11.000 1.003 159.5 38.8 1.200 1.303 0.286 0.0
11.001 227 228 71.920 0.600 16.247 16.070 0.177 406.3 450 6.89 47.1
11.001 1.002 159.4 67.7 1.303 1.480 0.530 0.0
11.002 228 223 20.160 0.600 16.070 16.020 0.050 403.2 450 7.23 46.0
11.002 1.006 160.0 70.4 1.480 1.530 0.565 0.0
10.002 223 224 13.340 0.600 15.870 14.981 0.889 15.0 600 7.45 45.3
10.002 6.308 1783.4 131.9 1.530 2.419 1.074 0.0
10.003 224 225 11.097 0.600 14.981 14.734 0.247 44.9 600 7.48 45.2
10.003 3.640 1029.2 131.6 2.419 0.666 1.074 0.0
10.004 225 213 70.766 0.600 14.734 14.612 0.122 580.0 600 8.66 41.9
10.004 1.004 283.8 122.0 0.666 0.788 1.074 0.0
12.000 229 230 34.791 0.600 14.897 14.820 0.077 451.8 450 5.61 50.0
12.000 0.950 151.0 15.9 0.653 0.730 0.117 0.0
13.000 232 230 17.380 0.600 14.859 14.820 0.039 445.6 450 5.30 50.0
13.000 0.956 152.1 13.1 0.691 0.730 0.097 0.0
12.001 230 231 12.729 0.600 14.820 14.792 0.028 454.6 450 5.83 50.0
12.001 0.947 150.6 29.0 0.730 0.758 0.214 0.0
12.002 231 213 13.660 0.600 14.792 14.762 0.030 455.3 450 6.08 50.0
12.002 0.946 150.5 29.0 0.758 0.788 0.214 0.0
8.013 213 214 26.273 0.600 14.462 14.423 0.039 673.7 750 14.20 32.0
8.013 1.070 472.9 263.9 0.788 1.527 3.043 0.0
8.014 214 215 47.176 0.600 14.423 14.353 0.070 673.9 750 14.99 31.0
8.014 1.070 472.8 255.7 1.527 1.547 3.043 0.0
8.015 215 216 69.976 0.600 14.353 14.249 0.104 672.8 750 16.15 29.7
8.015 1.071 473.2 245.0 1.547 1.801 3.043 0.0
14.000 233 234 60.610 0.600 14.768 14.667 0.101 600.1 600 5.90 50.0
14.000 0.987 278.9 40.8 0.632 0.733 0.301 0.0
14.001 234 235 59.954 0.600 14.667 14.567 0.100 599.5 600 6.90 47.1
14.001 0.987 279.1 54.9 0.733 0.833 0.430 0.0
15.000 240 241 59.954 0.600 14.693 14.593 0.100 599.5 600 5.98 50.0
15.000 0.987 279.1 43.5 0.707 0.807 0.321 0.0
15.001 241 235 15.639 0.600 14.593 14.567 0.026 601.5 600 6.25 49.4
15.001 0.985 278.6 43.0 0.807 0.833 0.321 0.0
14.002 235 236 35.523 0.600 14.567 14.508 0.059 602.1 600 7.49 45.2
14.002 0.985 278.5 112.5 0.833 0.892 0.918 0.0
14.003 236 237 44.598 0.600 14.508 14.434 0.074 602.7 600 8.23 43.0
14.003 0.984 278.3 124.8 0.892 0.966 1.071 0.0
14.004 237 238 7.586 0.600 14.434 14.421 0.013 583.5 600 8.29 42.9
14.004 1.001 282.9 124.5 0.966 0.979 1.071 0.0
16.000 242 243 47.931 0.600 14.704 14.597 0.107 448.0 450 5.84 50.0
16.000 0.954 151.7 22.0 0.846 0.953 0.162 0.0
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 5
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Links
Name USNode
DSNode
Length(m)
ks (mm) /n
US IL(m)
DS IL(m)
Fall(m)
Slope(1:X)
Dia(mm)
T of C(mins)
Rain(mm/hr)
Name Vel(m/s)
Cap(l/s)
Flow(l/s)
USDepth
(m)
DSDepth
(m)
Σ Area(ha)
Σ AddIn ow
(l/s)
16.001 243 238 11.724 0.600 14.597 14.571 0.026 450.9 450 7.65 44.7
16.001 0.951 151.2 19.6 0.953 0.979 0.162 0.0
12.005 238 239 9.378 0.600 14.271 14.258 0.013 721.4 750 8.44 42.4
12.005 1.034 456.8 141.7 0.979 0.992 1.233 0.0
12.006 239 216 7.117 0.600 14.258 14.249 0.009 790.8 750 8.56 42.1
12.006 0.987 436.0 140.7 0.992 1.801 1.233 0.0
8.016 216 217 90.178 0.600 14.249 14.115 0.134 673.0 750 17.65 28.1
8.016 1.071 473.1 325.7 1.801 3.135 4.276 0.0
8.017 217 218 70.337 0.600 14.115 14.011 0.104 675.0 750 18.75 27.1
8.017 1.069 472.4 314.1 3.135 2.589 4.276 0.0
8.018 218 219 13.531 0.600 14.011 13.966 0.045 300.0 300 19.00 26.9
8.018 0.902 63.8 311.8 3.039 1.734 4.276 0.0
8.019 219 Pump in 43.255 0.600 13.966 13.820 0.146 296.3 300 19.79 26.2
8.019 0.908 64.2 303.7 1.734 1.880 4.276 0.0
6.002 24 24.1 40.516 0.600 14.060 13.800 0.260 155.8 300 6.65 47.9
6.002 1.257 88.8 48.6 1.360 1.570 0.374 0.0
1.008 24.1 25 10.195 0.600 13.500 13.375 0.125 81.6 600 13.02 33.6
1.008 2.698 762.7 168.6 1.570 1.715 1.851 0.0
3.000 19 20 24.797 0.600 19.600 19.200 0.400 62.0 225 5.25 50.0
3.000 1.664 66.1 22.4 1.355 0.845 0.165 0.0
3.001 20 21 37.608 0.600 19.200 16.659 2.541 14.8 225 5.42 50.0
3.001 3.418 135.9 34.8 0.845 1.126 0.257 0.0
4.000 18.1 18 18.928 0.600 21.024 19.112 1.912 9.9 150 5.17 50.0
4.000 3.221 56.9 18.2 0.790 1.238 0.134 0.0
7.000 17 18 62.822 0.600 22.200 19.136 3.064 20.5 225 5.34 50.0
7.000 2.902 115.4 7.7 1.375 1.139 0.057 0.0
4.001 18 21 61.511 0.600 19.040 16.656 2.384 25.8 225 6.36 49.0
4.001 2.586 102.8 42.4 1.235 1.129 0.319 0.0
3.002 21 22 30.343 0.600 16.430 13.721 2.709 11.2 450 6.04 50.0
3.002 6.100 970.1 87.0 1.130 1.829 0.642 0.0
3.003 22 2.4 11.807 0.600 13.715 13.685 0.030 393.6 450 6.06 50.0
3.003 1.018 162.0 89.2 1.835 1.590 0.658 0.0
5.000 100 101 20.474 0.600 19.200 18.743 0.457 44.8 150 5.41 50.0
5.000 1.507 26.6 10.0 0.650 1.107 0.074 0.0
5.001 101 102 42.575 0.600 18.743 17.178 1.565 27.2 150 5.80 50.0
5.001 1.938 34.2 54.3 1.107 2.672 0.401 0.0
5.002 102 103 14.611 0.600 17.176 16.567 0.609 24.0 150 6.04 50.0
5.002 2.064 36.5 70.2 2.674 1.283 0.518 0.0
5.003 103 104 39.428 0.600 16.567 14.931 1.636 24.1 150 6.68 47.8
5.003 2.059 36.4 116.9 1.283 1.919 0.902 0.0
5.004 104 2.3 10.630 0.600 14.930 14.409 0.521 20.4 150 6.86 47.2
5.004 2.239 39.6 116.5 1.920 1.201 0.911 0.0
5.005 2.3 2.4 49.363 0.600 14.410 13.685 0.725 68.1 375 7.68 44.6
5.005 2.198 242.8 117.5 0.975 1.665 0.972 0.0
3.004 2.4 25 50.176 0.600 13.685 13.375 0.310 161.9 450 8.53 42.2
3.004 1.595 253.7 190.7 1.590 1.865 1.667 0.0
1.009 25 23.4 4.267 0.600 13.375 13.350 0.025 170.7 600 13.09 33.5
1.009 1.861 526.1 319.6 1.715 1.750 3.520 0.0
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 6
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Links
Name USNode
DSNode
Length(m)
ks (mm) /n
US IL(m)
DS IL(m)
Fall(m)
Slope(1:X)
Dia(mm)
T of C(mins)
Rain(mm/hr)
Name Vel(m/s)
Cap(l/s)
Flow(l/s)
USDepth
(m)
DSDepth
(m)
Σ Area(ha)
Σ AddIn ow
(l/s)
1.010 23.4 23.3 8.160 0.600 13.350 13.301 0.049 166.5 600 13.22 33.3
1.010 1.884 532.7 318.3 1.750 1.910 3.526 0.0
1.011 23.3 23.2 16.295 0.600 13.301 13.050 0.251 64.9 600 13.50 32.9
1.011 3.025 855.3 315.1 1.910 2.350 3.533 0.0
1.012 23.2 Pump in 14.443 0.600 13.050 13.000 0.050 288.9 600 13.74 32.6
1.012 1.427 403.6 312.4 2.350 2.400 3.536 0.0
1.013 Pump in Pond 16.605 0.600 13.000 12.786 0.214 77.6 600 14.09 32.1
1.013 2.766 782.1 695.3 2.400 2.909 7.991 0.0
Pipeline Schedule
Link Length(m)
Slope(1:X)
Dia(mm)
LinkType
US CL(m)
US IL(m)
US Depth(m)
DS CL(m)
DS IL(m)
DS Depth(m)
Link USNode
Dia(mm)
NodeType
MHType
DSNode
Dia(mm)
NodeType
MHType
1.000 65.430 37.9 225 Circular_Default Sewer Type 22.775 21.650 0.900 21.195 19.924 1.046
1.000 8.1 1200 Manhole Adoptable 8 1200 Manhole Adoptable
1.001 88.015 70.7 375 Circular_Default Sewer Type 21.195 19.775 1.045 20.365 18.530 1.460
1.001 8 1200 Manhole Adoptable 9 1200 Manhole Adoptable
2.000 32.657 296.9 225 Circular_Default Sewer Type 20.500 18.790 1.485 20.365 18.680 1.460
2.000 9.1 1200 Manhole Adoptable 9 1200 Manhole Adoptable
1.002 49.228 76.9 375 Circular_Default Sewer Type 20.365 18.530 1.460 20.305 17.890 2.040
1.002 9 1200 Manhole Adoptable 10 1200 Manhole Adoptable
1.003 44.234 24.9 375 Circular_Default Sewer Type 20.305 17.890 2.040 17.750 16.114 1.261
1.003 10 1200 Manhole Adoptable 11.1 1200 Manhole Adoptable
1.004 28.326 21.4 375 Circular_Default Sewer Type 17.750 16.110 1.265 16.985 14.786 1.824
1.004 11.1 1200 Manhole Adoptable 11 1200 Manhole Adoptable
1.005 80.122 120.5 450 Circular_Default Sewer Type 16.985 14.765 1.770 15.600 14.100 1.050
1.005 11 1200 Manhole Adoptable 12 1200 Manhole Adoptable
1.006 21.680 86.7 450 Circular_Default Sewer Type 15.600 14.100 1.050 15.850 13.850 1.550
1.006 12 1200 Manhole Adoptable 15 1200 Manhole Adoptable
1.007 93.370 466.9 600 Circular_Default Sewer Type 15.850 13.700 1.550 15.670 13.500 1.570
1.007 15 1200 Manhole Adoptable 24.1 1200 Manhole Adoptable
6.000 35.141 242.4 225 Circular_Default Sewer Type 15.700 14.425 1.050 15.700 14.280 1.195
6.000 13 1200 Manhole Adoptable 23 1200 Manhole Adoptable
6.001 23.425 161.6 225 Circular_Default Sewer Type 15.700 14.280 1.195 15.720 14.135 1.360
6.001 23 1200 Manhole Adoptable 24 1200 Manhole Adoptable
8.000 65.872 82.3 300 Circular_Default Sewer Type 22.800 20.500 2.000 21.200 19.700 1.200
8.000 200 1200 Manhole Adoptable 201 1200 Manhole Adoptable
8.001 70.774 101.1 300 Circular_Default Sewer Type 21.200 19.700 1.200 20.500 19.000 1.200
8.001 201 1200 Manhole Adoptable 202 1350 Manhole Adoptable
8.002 70.774 141.5 375 Circular_Default Sewer Type 20.500 18.925 1.200 20.000 18.425 1.200
8.002 202 1350 Manhole Adoptable 203 1350 Manhole Adoptable
8.003 15.488 322.7 375 Circular_Default Sewer Type 20.000 18.425 1.200 20.000 18.377 1.248
8.003 203 1350 Manhole Adoptable 204 1350 Manhole Adoptable
8.004 11.060 316.0 375 Circular_Default Sewer Type 20.000 18.377 1.248 20.000 18.342 1.283
8.004 204 1350 Manhole Adoptable 205 1350 Manhole Adoptable
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 7
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Pipeline Schedule
Link Length(m)
Slope(1:X)
Dia(mm)
LinkType
US CL(m)
US IL(m)
US Depth(m)
DS CL(m)
DS IL(m)
DS Depth(m)
Link USNode
Dia(mm)
NodeType
MHType
DSNode
Dia(mm)
NodeType
MHType
8.005 48.412 25.3 450 Circular_Default Sewer Type 20.000 18.267 1.283 18.000 16.353 1.197
8.005 205 1350 Manhole Adoptable 206 1350 Manhole Adoptable
8.006 14.769 399.2 525 Circular_Default Sewer Type 18.000 16.275 1.200 18.000 16.238 1.237
8.006 206 1350 Manhole Adoptable 207 1500 Manhole Adoptable
8.007 41.109 407.0 525 Circular_Default Sewer Type 18.000 16.238 1.237 18.000 16.137 1.338
8.007 207 1500 Manhole Adoptable 208 1500 Manhole Adoptable
9.000 29.248 80.6 375 Circular_Default Sewer Type 18.000 16.650 0.975 18.000 16.287 1.338
9.000 220 1350 Manhole Adoptable 208 1500 Manhole Adoptable
8.008 41.109 489.4 525 Circular_Default Sewer Type 18.000 16.137 1.338 18.000 16.053 1.422
8.008 208 1500 Manhole Adoptable 209 1500 Manhole Adoptable
8.009 89.999 76.9 525 Circular_Default Sewer Type 18.000 16.053 1.422 16.000 14.883 0.592
8.009 209 1500 Manhole Adoptable 210 1500 Manhole Adoptable
8.010 40.998 577.4 675 Circular_Default Sewer Type 16.000 14.733 0.592 16.000 14.662 0.663
8.010 210 1500 Manhole Adoptable 211 1500 Manhole Adoptable
8.011 21.195 572.8 675 Circular_Default Sewer Type 16.000 14.662 0.663 16.000 14.625 0.700
8.011 211 1500 Manhole Adoptable 212 1500 Manhole Adoptable
8.012 51.059 580.2 675 Circular_Default Sewer Type 16.000 14.625 0.700 16.000 14.537 0.788
8.012 212 1500 Manhole Adoptable 213 1500 Manhole Adoptable
10.000 73.659 407.0 450 Circular_Default Sewer Type 18.000 16.350 1.200 18.000 16.169 1.381
10.000 221 1200 Manhole Adoptable 222 1200 Manhole Adoptable
10.001 58.861 395.0 450 Circular_Default Sewer Type 18.000 16.169 1.381 18.000 16.020 1.530
10.001 222 1200 Manhole Adoptable 223 1350 Manhole Adoptable
11.000 41.765 405.5 450 Circular_Default Sewer Type 18.000 16.350 1.200 18.000 16.247 1.303
11.000 226 1200 Manhole Adoptable 227 1200 Manhole Adoptable
11.001 71.920 406.3 450 Circular_Default Sewer Type 18.000 16.247 1.303 18.000 16.070 1.480
11.001 227 1200 Manhole Adoptable 228 1200 Manhole Adoptable
11.002 20.160 403.2 450 Circular_Default Sewer Type 18.000 16.070 1.480 18.000 16.020 1.530
11.002 228 1200 Manhole Adoptable 223 1350 Manhole Adoptable
10.002 13.340 15.0 600 Circular_Default Sewer Type 18.000 15.870 1.530 18.000 14.981 2.419
10.002 223 1350 Manhole Adoptable 224 1350 Manhole Adoptable
10.003 11.097 44.9 600 Circular_Default Sewer Type 18.000 14.981 2.419 16.000 14.734 0.666
10.003 224 1350 Manhole Adoptable 225 1350 Manhole Adoptable
10.004 70.766 580.0 600 Circular_Default Sewer Type 16.000 14.734 0.666 16.000 14.612 0.788
10.004 225 1350 Manhole Adoptable 213 1500 Manhole Adoptable
12.000 34.791 451.8 450 Circular_Default Sewer Type 16.000 14.897 0.653 16.000 14.820 0.730
12.000 229 1350 Manhole Adoptable 230 1350 Manhole Adoptable
13.000 17.380 445.6 450 Circular_Default Sewer Type 16.000 14.859 0.691 16.000 14.820 0.730
13.000 232 1350 Manhole Adoptable 230 1350 Manhole Adoptable
12.001 12.729 454.6 450 Circular_Default Sewer Type 16.000 14.820 0.730 16.000 14.792 0.758
12.001 230 1350 Manhole Adoptable 231 1350 Manhole Adoptable
12.002 13.660 455.3 450 Circular_Default Sewer Type 16.000 14.792 0.758 16.000 14.762 0.788
12.002 231 1350 Manhole Adoptable 213 1500 Manhole Adoptable
8.013 26.273 673.7 750 Circular_Default Sewer Type 16.000 14.462 0.788 16.700 14.423 1.527
8.013 213 1500 Manhole Adoptable 214 1500 Manhole Adoptable
8.014 47.176 673.9 750 Circular_Default Sewer Type 16.700 14.423 1.527 16.650 14.353 1.547
8.014 214 1500 Manhole Adoptable 215 1500 Manhole Adoptable
8.015 69.976 672.8 750 Circular_Default Sewer Type 16.650 14.353 1.547 16.800 14.249 1.801
8.015 215 1500 Manhole Adoptable 216 1500 Manhole Adoptable
14.000 60.610 600.1 600 Circular_Default Sewer Type 16.000 14.768 0.632 16.000 14.667 0.733
14.000 233 1200 Manhole Adoptable 234 1200 Manhole Adoptable
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 8
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Pipeline Schedule
Link Length(m)
Slope(1:X)
Dia(mm)
LinkType
US CL(m)
US IL(m)
US Depth(m)
DS CL(m)
DS IL(m)
DS Depth(m)
Link USNode
Dia(mm)
NodeType
MHType
DSNode
Dia(mm)
NodeType
MHType
14.001 59.954 599.5 600 Circular_Default Sewer Type 16.000 14.667 0.733 16.000 14.567 0.833
14.001 234 1200 Manhole Adoptable 235 1350 Manhole Adoptable
15.000 59.954 599.5 600 Circular_Default Sewer Type 16.000 14.693 0.707 16.000 14.593 0.807
15.000 240 1200 Manhole Adoptable 241 1200 Manhole Adoptable
15.001 15.639 601.5 600 Circular_Default Sewer Type 16.000 14.593 0.807 16.000 14.567 0.833
15.001 241 1200 Manhole Adoptable 235 1350 Manhole Adoptable
14.002 35.523 602.1 600 Circular_Default Sewer Type 16.000 14.567 0.833 16.000 14.508 0.892
14.002 235 1350 Manhole Adoptable 236 1350 Manhole Adoptable
14.003 44.598 602.7 600 Circular_Default Sewer Type 16.000 14.508 0.892 16.000 14.434 0.966
14.003 236 1350 Manhole Adoptable 237 1350 Manhole Adoptable
14.004 7.586 583.5 600 Circular_Default Sewer Type 16.000 14.434 0.966 16.000 14.421 0.979
14.004 237 1350 Manhole Adoptable 238 1500 Manhole Adoptable
16.000 47.931 448.0 450 Circular_Default Sewer Type 16.000 14.704 0.846 16.000 14.597 0.953
16.000 242 1200 Manhole Adoptable 243 1200 Manhole Adoptable
16.001 11.724 450.9 450 Circular_Default Sewer Type 16.000 14.597 0.953 16.000 14.571 0.979
16.001 243 1200 Manhole Adoptable 238 1500 Manhole Adoptable
12.005 9.378 721.4 750 Circular_Default Sewer Type 16.000 14.271 0.979 16.000 14.258 0.992
12.005 238 1500 Manhole Adoptable 239 1500 Manhole Adoptable
12.006 7.117 790.8 750 Circular_Default Sewer Type 16.000 14.258 0.992 16.800 14.249 1.801
12.006 239 1500 Manhole Adoptable 216 1500 Manhole Adoptable
8.016 90.178 673.0 750 Circular_Default Sewer Type 16.800 14.249 1.801 18.000 14.115 3.135
8.016 216 1500 Manhole Adoptable 217 1500 Manhole Adoptable
8.017 70.337 675.0 750 Circular_Default Sewer Type 18.000 14.115 3.135 17.350 14.011 2.589
8.017 217 1500 Manhole Adoptable 218 2100 Manhole Adoptable
8.018 13.531 300.0 300 Circular_Default Sewer Type 17.350 14.011 3.039 16.000 13.966 1.734
8.018 218 2100 Manhole Adoptable 219 1200 Manhole Adoptable
8.019 43.255 296.3 300 Circular_Default Sewer Type 16.000 13.966 1.734 16.000 13.820 1.880
8.019 219 1200 Manhole Adoptable Pump in 1200 Manhole Adoptable
6.002 40.516 155.8 300 Circular_Default Sewer Type 15.720 14.060 1.360 15.670 13.800 1.570
6.002 24 1200 Manhole Adoptable 24.1 1200 Manhole Adoptable
1.008 10.195 81.6 600 Circular_Default Sewer Type 15.670 13.500 1.570 15.690 13.375 1.715
1.008 24.1 1200 Manhole Adoptable 25 1200 Manhole Adoptable
3.000 24.797 62.0 225 Circular_Default Sewer Type 21.180 19.600 1.355 20.270 19.200 0.845
3.000 19 1200 Manhole Adoptable 20 1200 Manhole Adoptable
3.001 37.608 14.8 225 Circular_Default Sewer Type 20.270 19.200 0.845 18.010 16.659 1.126
3.001 20 1200 Manhole Adoptable 21 1200 Manhole Adoptable
4.000 18.928 9.9 150 Circular_Default Sewer Type 21.964 21.024 0.790 20.500 19.112 1.238
4.000 18.1 1200 Manhole Adoptable 18 1200 Manhole Adoptable
7.000 62.822 20.5 225 Circular_Default Sewer Type 23.800 22.200 1.375 20.500 19.136 1.139
7.000 17 1200 Manhole Adoptable 18 1200 Manhole Adoptable
4.001 61.511 25.8 225 Circular_Default Sewer Type 20.500 19.040 1.235 18.010 16.656 1.129
4.001 18 1200 Manhole Adoptable 21 1200 Manhole Adoptable
3.002 30.343 11.2 450 Circular_Default Sewer Type 18.010 16.430 1.130 16.000 13.721 1.829
3.002 21 1200 Manhole Adoptable 22 1200 Manhole Adoptable
3.003 11.807 393.6 450 Circular_Default Sewer Type 16.000 13.715 1.835 15.725 13.685 1.590
3.003 22 1200 Manhole Adoptable 2.4 1200 Manhole Adoptable
5.000 20.474 44.8 150 Circular_Default Sewer Type 20.000 19.200 0.650 20.000 18.743 1.107
5.000 100 1200 Manhole Adoptable 101 1200 Manhole Adoptable
5.001 42.575 27.2 150 Circular_Default Sewer Type 20.000 18.743 1.107 20.000 17.178 2.672
5.001 101 1200 Manhole Adoptable 102 1200 Manhole Adoptable
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 9
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Pipeline Schedule
Link Length(m)
Slope(1:X)
Dia(mm)
LinkType
US CL(m)
US IL(m)
US Depth(m)
DS CL(m)
DS IL(m)
DS Depth(m)
Link USNode
Dia(mm)
NodeType
MHType
DSNode
Dia(mm)
NodeType
MHType
5.002 14.611 24.0 150 Circular_Default Sewer Type 20.000 17.176 2.674 18.000 16.567 1.283
5.002 102 1200 Manhole Adoptable 103 1200 Manhole Adoptable
5.003 39.428 24.1 150 Circular_Default Sewer Type 18.000 16.567 1.283 17.000 14.931 1.919
5.003 103 1200 Manhole Adoptable 104 1200 Manhole Adoptable
5.004 10.630 20.4 150 Circular_Default Sewer Type 17.000 14.930 1.920 15.760 14.409 1.201
5.004 104 1200 Manhole Adoptable 2.3 1200 Manhole Adoptable
5.005 49.363 68.1 375 Circular_Default Sewer Type 15.760 14.410 0.975 15.725 13.685 1.665
5.005 2.3 1200 Manhole Adoptable 2.4 1200 Manhole Adoptable
3.004 50.176 161.9 450 Circular_Default Sewer Type 15.725 13.685 1.590 15.690 13.375 1.865
3.004 2.4 1200 Manhole Adoptable 25 1200 Manhole Adoptable
1.009 4.267 170.7 600 Circular_Default Sewer Type 15.690 13.375 1.715 15.700 13.350 1.750
1.009 25 1200 Manhole Adoptable 23.4 1200 Manhole Adoptable
1.010 8.160 166.5 600 Circular_Default Sewer Type 15.700 13.350 1.750 15.811 13.301 1.910
1.010 23.4 1200 Manhole Adoptable 23.3 1200 Manhole Adoptable
1.011 16.295 64.9 600 Circular_Default Sewer Type 15.811 13.301 1.910 16.000 13.050 2.350
1.011 23.3 1200 Manhole Adoptable 23.2 1200 Manhole Adoptable
1.012 14.443 288.9 600 Circular_Default Sewer Type 16.000 13.050 2.350 16.000 13.000 2.400
1.012 23.2 1200 Manhole Adoptable Pump in 1200 Manhole Adoptable
1.013 16.605 77.6 600 Circular_Default Sewer Type 16.000 13.000 2.400 16.295 12.786 2.909
1.013 Pump in 1200 Manhole Adoptable Pond 1200 Manhole Adoptable
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
8.1
8
9.1
9
10
11.1
573964.128
573903.757
573783.104
573815.762
573793.734
573793.282
157747.966
157722.740
157724.594
157724.594
157768.618
157812.850
22.775
21.195
20.500
20.365
20.305
17.750
1.125
1.420
1.710
1.835
2.415
1.640
1200
1200
1200
1200
1200
1200
0
10
0
1 2
0
1
0
1
0
01
0
012
01
01
0
1.0001.000
1.001
2.0002.0001.001
1.0021.002
1.0031.003
1.004
21.65019.924
19.775
18.79018.68018.530
18.53017.890
17.89016.114
16.110
225225
375
225225375
375375
375375
375
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 10
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
11
12
15
13
23
200
201
202
203
204
205
206
207
573792.915
573792.104
573813.784
573848.269
573883.275
573969.788
573908.237
573837.463
573766.689
573751.390
573743.186
573742.665
573730.685
157841.173
157921.291
157921.407
157959.993
157963.079
157726.203
157702.737
157702.509
157702.280
157704.694
157712.111
157760.520
157769.158
16.985
15.600
15.850
15.700
15.700
22.800
21.200
20.500
20.000
20.000
20.000
18.000
18.000
2.220
1.500
2.150
1.275
1.420
2.300
1.500
1.575
1.575
1.623
1.733
1.725
1.762
1200
1200
1200
1200
1200
1200
1200
1350
1350
1350
1350
1350
1500
1
0
1
0
1 0
0
1 0
0
10
10
10
1
0
1
0
1
0
1
0
1
01
01
0
01
0
01
01
01
01
01
01
01
0
1.004
1.0051.005
1.0061.006
1.007
6.0006.000
6.001
8.0008.000
8.0018.001
8.0028.002
8.0038.003
8.0048.004
8.0058.005
8.0068.006
8.007
14.786
14.76514.100
14.10013.850
13.700
14.42514.280
14.280
20.50019.700
19.70019.000
18.92518.425
18.42518.377
18.37718.342
18.26716.353
16.27516.238
16.238
375
450450
450450
600
225225
225
300300
300300
375375
375375
375375
450450
525525
525
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 11
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
220
208
209
210
211
212
221
222
226
227
228
223
224
573693.541
573689.580
573648.475
573647.807
573644.436
573638.682
573585.352
573584.540
573617.829
573605.759
573604.037
573583.878
573583.728
157798.675
157769.696
157770.234
157860.231
157901.090
157921.489
157769.158
157842.813
157790.015
157829.998
157901.897
157901.670
157915.009
18.000
18.000
18.000
16.000
16.000
16.000
18.000
18.000
18.000
18.000
18.000
18.000
18.000
1.350
1.863
1.947
1.267
1.338
1.375
1.650
1.831
1.650
1.753
1.930
2.130
3.019
1350
1500
1500
1500
1500
1500
1200
1200
1200
1200
1200
1350
1350
0
1
20
1
0
1
0
1
0
1
0
0
1
0
0
1
0
1
0
1
2
0
1
0
012
01
01
01
01
0
01
0
01
01
012
01
0
9.0009.0008.007
8.0088.008
8.0098.009
8.0108.010
8.0118.011
8.012
10.00010.000
10.001
11.00011.000
11.00111.001
11.00211.00210.001
10.00210.002
10.003
16.65016.28716.137
16.13716.053
16.05314.883
14.73314.662
14.66214.625
14.625
16.35016.169
16.169
16.35016.247
16.24716.070
16.07016.02016.020
15.87014.981
14.981
375375525
525525
525525
675675
675675
675
450450
450
450450
450450
450450450
600600
600
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 12
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
225
229
232
230
231
213
214
215
233
234
240
241
235
573589.735
573656.168
573662.313
573655.552
573642.823
573641.617
573666.836
573714.010
573767.873
573767.873
573752.098
573752.098
573767.737
157924.339
157924.128
157974.925
157958.914
157958.857
157972.464
157979.832
157979.437
157765.741
157826.351
157826.351
157886.305
157886.305
16.000
16.000
16.000
16.000
16.000
16.000
16.700
16.650
16.000
16.000
16.000
16.000
16.000
1.266
1.103
1.141
1.180
1.208
1.538
2.277
2.297
1.232
1.333
1.307
1.407
1.433
1350
1350
1350
1350
1350
1500
1500
1500
1200
1200
1200
1200
1350
1
0
0
0
1
2
0
1
0
12
3
0
10
1 0
0
1
0
0
1
0
1
2
0
1
0
0
012
01
012301
01
0
01
0
01
012
0
10.003
10.004
12.000
13.00013.00012.000
12.00112.001
12.00212.00210.0048.0128.0138.013
8.0148.014
8.015
14.00014.000
14.001
15.00015.000
15.00115.00114.001
14.002
14.734
14.734
14.897
14.85914.82014.820
14.82014.792
14.79214.76214.61214.53714.46214.423
14.42314.353
14.353
14.76814.667
14.667
14.69314.593
14.59314.56714.567
14.567
600
600
450
450450450
450450
450450600675750750
750750
750
600600
600
600600
600600600
600
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 13
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
236
237
242
243
238
239
216
217
218
219
24
24.1
19
573768.301
573768.301
573710.243
573758.173
573769.883
573779.259
573783.986
573854.324
573924.661
573924.808
573906.698
573907.143
573963.016
157921.824
157966.422
157974.668
157974.410
157973.841
157974.039
157979.360
157979.360
157979.360
157965.830
157963.318
157922.805
157782.339
16.000
16.000
16.000
16.000
16.000
16.000
16.800
18.000
17.350
16.000
15.720
15.670
21.180
1.492
1.566
1.296
1.403
1.729
1.742
2.551
3.885
3.339
2.034
1.660
2.170
1.580
1350
1350
1200
1200
1500
1500
1500
1500
2100
1200
1200
1200
1200
1
0
1
0
0
1 0
1
2
0
1
0
1
2 0
1 0
1
0
1
0
1
0
1
2
0
0
1
01
0
01
012
01
012
01
01
01
01
012
0
0
14.002
14.00314.003
14.004
16.00016.000
16.00116.00114.004
12.00512.005
12.00612.0068.015
8.0168.016
8.0178.017
8.0188.018
8.0196.001
6.0026.0021.007
1.008
3.000
14.508
14.50814.434
14.434
14.70414.597
14.59714.57114.421
14.27114.258
14.25814.24914.249
14.24914.115
14.11514.011
14.01113.966
13.96614.135
14.06013.80013.500
13.500
19.600
600
600600
600
450450
450450600
750750
750750750
750750
750750
300300
300225
300300600
600
225
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 14
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
20
18.1
17
18
21
22
100
101
102
103
104
2.3
2.4
573955.216
573931.297
573985.663
573922.846
573922.279
573907.699
574013.128
573996.117
573987.190
573975.229
573966.416
573955.983
573907.143
157805.877
157745.584
157763.323
157762.521
157824.029
157850.640
157771.795
157783.189
157824.817
157833.208
157871.639
157869.600
157862.434
20.270
21.964
23.800
20.500
18.010
16.000
20.000
20.000
20.000
18.000
17.000
15.760
15.725
1.070
0.940
1.600
1.460
1.580
2.285
0.800
1.257
2.824
1.433
2.070
1.351
2.040
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1
0
0
0
1
2
0
1
2
0
1
0
0
1
0
1
0
1
0
1
0
10
1
2
0
1
0
0
012
012
01
0
01
01
01
01
01
012
0
3.000
3.001
4.000
7.0007.0004.000
4.0014.0013.001
3.0023.002
3.003
5.0005.000
5.0015.001
5.0025.002
5.0035.003
5.0045.004
5.0055.0053.003
3.004
19.200
19.200
21.024
22.20019.13619.112
19.04016.65616.659
16.43013.721
13.715
19.20018.743
18.74317.178
17.17616.567
16.56714.931
14.93014.409
14.41013.68513.685
13.685
225
225
150
225225150
225225225
450450
450
150150
150150
150150
150150
150150
375375450
450
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 15
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
25
23.4
23.3
23.2
Pump in
Pond
573907.143
573911.410
573911.521
573927.811
573941.443
573941.705
157912.610
157912.581
157920.740
157921.131
157925.902
157942.505
15.690
15.700
15.811
16.000
16.000
16.295
2.315
2.350
2.510
2.950
3.000
3.509
1200
1200
1200
1200
1200
1200
1
2
0
1
0
1
0
10
1
2
0
1
12
01
01
01
012
01
3.0041.008
1.0091.009
1.0101.010
1.0111.011
1.0128.0191.012
1.0131.013
13.37513.375
13.37513.350
13.35013.301
13.30113.050
13.05013.82013.000
13.00012.786
450600
600600
600600
600600
600300600
600600
Simula on Se ngs
Rainfall MethodologySummer CV
Winter CVAnalysis Speed
FEH-130.7500.840Detailed
Skip Steady StateDrain Down Time (mins)
Addi onal Storage (m³/ha)Check Discharge Rate(s)
✓150020.0✓
Check Discharge Volume100 year 360 minute (m³)
✓
Storm Dura ons15 30 60 120 180 240 360 480 600 720 960 1440
Return Period(years)
Climate Change(CC %)
Addi onal Area(A %)
Addi onal Flow(Q %)
230
100
00
40
000
000
Pre-development Discharge Rate
Site MakeupGreen eld Method
Posi vely Drained Area (ha)SAAR (mm)
Soil IndexSPR
RegionGrowth Factor 1 year
Green eldIH124
10.1010.85
Growth Factor 30 yearGrowth Factor 100 year
Be erment (%)QBar
Q 1 year (l/s)Q 30 year (l/s)
Q 100 year (l/s)
1.952.480
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 16
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Pre-development Discharge Volume
Site MakeupGreen eld Method
Posi vely Drained Area (ha)Soil Index
SPRCWI
Green eldFSR/FEH
10.10
Return Period (years)Climate Change (%)
Storm Dura on (mins)Be erment (%)
PRRuno Volume (m³)
10003600
Node 218 Online Hydro-Brake® Control
Flap ValveReplaces Downstream Link
Invert Level (m)Design Depth (m)Design Flow (l/s)
x✓14.0111.58550.0
Objec veSump Available
Product NumberMin Outlet Diameter (m)
Min Node Diameter (mm)
(HE) Minimise upstream storage✓CTL-SHE-0287-5000-1585-50000.3002100
Node Pump in Online Head/Flow Control
Flap Valve x Replaces Downstream Link ✓ Invert Level (m) 13.000
Head(m)
Flow(l/s)
Head(m)
Flow(l/s)
Head(m)
Flow(l/s)
Head(m)
Flow(l/s)
0.500 80.000 1.000 90.000 2.000 100.000 3.000 100.000
Node 213 Depth/Area Storage Structure
Base Inf Coe cient (m/hr)Side Inf Coe cient (m/hr)
0.000000.00000
Safety FactorPorosity
2.01.00
Invert Level (m)Time to half empty (mins)
14.462480
Depth(m)
Area(m²)
Inf Area(m²)
Depth(m)
Area(m²)
Inf Area(m²)
0.000 1794.7 0.0 1.538 2641.4 0.0
Node Pump in Depth/Area Storage Structure
Base Inf Coe cient (m/hr)Side Inf Coe cient (m/hr)
0.000000.00000
Safety FactorPorosity
2.01.00
Invert Level (m)Time to half empty (mins)
13.820304
Depth(m)
Area(m²)
Inf Area(m²)
Depth(m)
Area(m²)
Inf Area(m²)
Depth(m)
Area(m²)
Inf Area(m²)
0.000 875.0 0.0 0.785 1075.0 0.0 1.785 1293.0 0.0
Other (defaults)
Entry Loss (manhole)Exit Loss (manhole)
0.2500.250
Entry Loss (junc on)Exit Loss (junc on)
0.0000.000
Apply Recommended LossesFlood Risk (m)
x0.300
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 17
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 2 year Cri cal Storm Dura on. Lowest mass balance: 99.44%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 8.1 11 21.726 0.076 21.2 0.2871 0.0000 OK
15 minute winter 8.1 1.000 8 20.5 1.756 0.242 0.7630
15 minute winter 8 11 19.908 0.133 67.8 0.7778 0.0000 OK
15 minute winter 8 1.001 9 66.2 1.542 0.278 3.8389
15 minute winter 9.1 11 18.881 0.091 10.3 0.1805 0.0000 OK
15 minute winter 9.1 2.000 9 9.9 0.708 0.332 0.4586
15 minute winter 9 11 18.710 0.180 96.2 0.4912 0.0000 OK
15 minute winter 9 1.002 10 96.5 2.119 0.423 2.2441
15 minute winter 10 11 18.034 0.144 118.6 0.3601 0.0000 OK
15 minute winter 10 1.003 11.1 118.2 3.130 0.294 1.6717
15 minute winter 11.1 11 16.250 0.140 132.9 0.3472 0.0000 OK
15 minute winter 11.1 1.004 11 132.8 2.502 0.306 1.5051
15 minute winter 11 11 15.010 0.245 163.2 0.7778 0.0000 OK
15 minute winter 11 1.005 12 162.9 1.825 0.553 7.1496
15 minute winter 12 12 14.352 0.252 176.4 0.6254 0.0000 OK
15 minute winter 12 1.006 15 171.7 2.056 0.494 2.1666
15 minute winter 15 13 14.154 0.454 194.7 1.2405 0.0000 OK
15 minute winter 15 1.007 24.1 180.6 1.085 0.570 23.8277
15 minute winter 13 11 14.622 0.197 32.3 0.9248 0.0000 OK
15 minute winter 13 6.000 23 30.0 0.828 0.905 1.3470
15 minute winter 23 11 14.521 0.241 47.4 0.6879 0.0000 SURCHARGED
15 minute winter 23 6.001 24 45.1 1.182 1.105 0.8594
15 minute winter 200 10 20.587 0.087 23.6 0.2249 0.0000 OK
15 minute winter 200 8.000 201 23.0 1.144 0.188 1.3845
15 minute winter 201 11 19.816 0.116 35.8 0.2709 0.0000 OK
15 minute winter 201 8.001 202 34.2 1.381 0.310 1.7538
15 minute winter 202 11 19.056 0.131 45.9 0.3322 0.0000 OK
15 minute winter 202 8.002 203 45.2 1.036 0.269 3.1728
15 minute winter 203 12 18.615 0.190 48.7 0.3346 0.0000 OK
15 minute winter 203 8.003 204 47.6 0.866 0.430 0.8519
15 minute winter 204 12 18.562 0.185 49.5 0.3031 0.0000 OK
15 minute winter 204 8.004 205 49.4 0.997 0.442 0.5483
15 minute winter 205 12 18.359 0.092 60.2 0.2339 0.0000 OK
15 minute winter 205 8.005 206 60.3 2.188 0.094 1.4787
15 minute winter 206 12 16.483 0.208 63.2 0.3608 0.0000 OK
15 minute winter 206 8.006 207 62.8 0.788 0.260 1.1784
15 minute winter 207 12 16.447 0.209 70.1 0.5251 0.0000 OK
15 minute winter 207 8.007 208 69.2 0.779 0.289 3.8107
15 minute winter 220 10 16.771 0.121 47.4 0.7699 0.0000 OK
15 minute winter 220 9.000 208 46.3 1.570 0.207 0.8641
15 minute winter 208 12 16.395 0.258 116.8 0.6495 0.0000 OK
15 minute winter 208 8.008 209 118.0 1.372 0.542 3.5453
15 minute winter 209 12 16.236 0.183 142.5 0.7378 0.0000 OK
15 minute winter 209 8.009 210 140.7 2.153 0.254 5.8916
15 minute winter 210 12 15.047 0.314 154.9 1.1905 0.0000 OK
15 minute winter 210 8.010 211 152.4 0.944 0.393 6.7151
15 minute winter 211 13 14.980 0.318 157.6 0.7851 0.0000 OK
15 minute winter 211 8.011 212 155.7 1.001 0.400 3.3467
15 minute winter 212 13 14.921 0.296 155.7 0.5235 0.0000 OK
15 minute winter 212 8.012 213 153.5 1.163 0.397 6.7845
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 18
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 2 year Cri cal Storm Dura on. Lowest mass balance: 99.44%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 221 10 16.564 0.214 72.5 1.5612 0.0000 OK
15 minute winter 221 10.000 222 70.9 1.016 0.445 5.2730
15 minute winter 222 12 16.376 0.207 70.9 0.2337 0.0000 OK
15 minute winter 222 10.001 223 67.0 1.035 0.415 3.8137
15 minute winter 226 11 16.504 0.154 40.7 0.7066 0.0000 OK
15 minute winter 226 11.000 227 39.2 0.647 0.246 2.5755
15 minute winter 227 11 16.464 0.217 73.8 0.8488 0.0000 OK
15 minute winter 227 11.001 228 72.5 0.951 0.455 5.4867
15 minute winter 228 12 16.293 0.223 77.2 0.3329 0.0000 OK
15 minute winter 228 11.002 223 75.7 1.067 0.473 1.4300
15 minute winter 223 12 15.986 0.116 142.7 0.1655 0.0000 OK
15 minute winter 223 10.002 224 142.8 2.587 0.080 0.7524
15 minute winter 224 12 15.168 0.187 142.8 0.2676 0.0000 OK
15 minute winter 224 10.003 225 142.3 1.473 0.138 1.1734
15 minute winter 225 13 15.033 0.299 142.3 0.4278 0.0000 OK
15 minute winter 225 10.004 213 139.4 1.139 0.491 8.6791
15 minute winter 229 10 14.994 0.097 16.7 0.3455 0.0000 OK
15 minute winter 229 12.000 230 16.1 0.493 0.106 1.1823
15 minute winter 232 11 14.969 0.110 13.8 0.3445 0.0000 OK
15 minute winter 232 13.000 230 12.8 0.401 0.084 0.6324
15 minute winter 230 11 14.962 0.142 28.9 0.2032 0.0000 OK
15 minute winter 230 12.001 231 28.5 0.693 0.189 0.5240
15 minute winter 231 11 14.926 0.134 28.5 0.1916 0.0000 OK
15 minute winter 231 12.002 213 28.2 0.797 0.187 0.4842
240 minute winter 213 180 14.648 0.186 98.5 345.4227 0.0000 OK
240 minute winter 213 8.013 214 39.5 0.623 0.083 2.5065
240 minute winter 214 176 14.640 0.217 39.5 0.3839 0.0000 OK
240 minute winter 214 8.014 215 38.2 0.583 0.081 6.0642
240 minute winter 215 176 14.635 0.282 38.2 0.4987 0.0000 OK
240 minute winter 215 8.015 216 38.9 0.551 0.082 13.2249
15 minute winter 233 10 14.924 0.156 42.9 0.9380 0.0000 OK
15 minute winter 233 14.000 234 42.5 0.666 0.152 4.0367
15 minute winter 234 12 14.865 0.198 59.7 0.6056 0.0000 OK
15 minute winter 234 14.001 235 50.9 0.567 0.182 6.1933
15 minute winter 240 12 14.855 0.162 45.7 0.9762 0.0000 OK
15 minute winter 240 15.000 241 43.6 0.626 0.156 5.1978
15 minute winter 241 12 14.845 0.252 43.6 0.2852 0.0000 OK
15 minute winter 241 15.001 235 35.4 0.312 0.127 1.8628
15 minute winter 235 12 14.842 0.275 108.0 1.0343 0.0000 OK
15 minute winter 235 14.002 236 102.7 0.803 0.369 4.5438
15 minute winter 236 12 14.790 0.282 119.7 0.9811 0.0000 OK
15 minute winter 236 14.003 237 118.0 0.960 0.424 5.4826
15 minute winter 237 13 14.695 0.261 118.0 0.3730 0.0000 OK
15 minute winter 237 14.004 238 118.0 1.121 0.417 0.7994
15 minute winter 242 10 14.823 0.119 23.1 0.4329 0.0000 OK
15 minute winter 242 16.000 243 22.6 0.688 0.149 1.5914
15 minute winter 243 11 14.716 0.119 22.6 0.1343 0.0000 OK
15 minute winter 243 16.001 238 22.3 0.744 0.147 0.3514
240 minute winter 238 176 14.633 0.362 39.9 0.6395 0.0000 OK
240 minute winter 238 12.005 239 39.5 0.510 0.087 2.0172
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 19
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 2 year Cri cal Storm Dura on. Lowest mass balance: 99.44%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
240 minute winter 239 176 14.633 0.375 39.5 0.6622 0.0000 OK
240 minute winter 239 12.006 216 38.9 0.521 0.089 1.5888
240 minute winter 216 176 14.633 0.384 67.8 0.6779 0.0000 OK
240 minute winter 216 8.016 217 60.4 0.557 0.128 24.7516
240 minute winter 217 176 14.630 0.515 60.4 0.9101 0.0000 OK
240 minute winter 217 8.017 218 52.6 0.372 0.111 24.9824
240 minute winter 218 176 14.629 0.618 52.6 2.1398 0.0000 SURCHARGED
240 minute winter 218 Hydro-Brake® 219 49.8
180 minute winter 219 144 14.174 0.208 49.8 0.2348 0.0000 OK
180 minute winter 219 8.019 Pump in 49.8 1.061 0.776 2.3161
15 minute winter 24 10 14.217 0.157 48.5 0.2245 0.0000 OK
15 minute winter 24 6.002 24.1 48.0 1.222 0.540 2.1428
15 minute winter 24.1 13 14.101 0.601 228.0 0.6797 0.0000 SURCHARGED
15 minute winter 24.1 1.008 25 232.4 0.911 0.305 2.8708
15 minute winter 19 10 19.698 0.098 23.5 0.3142 0.0000 OK
15 minute winter 19 3.000 20 23.2 1.587 0.350 0.3627
15 minute winter 20 10 19.281 0.081 36.3 0.2297 0.0000 OK
15 minute winter 20 3.001 21 35.6 2.848 0.262 0.4705
15 minute winter 18.1 10 21.086 0.062 19.1 0.2464 0.0000 OK
15 minute winter 18.1 4.000 18 18.9 2.827 0.332 0.1263
15 minute winter 17 10 22.240 0.040 8.1 0.0734 0.0000 OK
15 minute winter 17 7.000 18 7.8 1.660 0.067 0.2948
15 minute winter 18 11 19.144 0.104 44.8 0.3011 0.0000 OK
15 minute winter 18 4.001 21 44.0 2.474 0.428 1.0932
15 minute winter 21 11 16.521 0.091 88.6 0.1779 0.0000 OK
15 minute winter 21 3.002 22 88.4 1.638 0.091 2.6871
15 minute winter 22 13 14.169 0.454 90.5 0.5766 0.0000 SURCHARGED
15 minute winter 22 3.003 2.4 87.1 1.032 0.538 1.8705
30 minute winter 100 26 19.242 0.042 4.6 0.1258 0.0000 OK
30 minute winter 100 5.000 101 4.6 0.587 0.173 0.2189
30 minute winter 101 33 18.919 0.176 24.8 1.1146 0.0000 SURCHARGED
30 minute winter 101 5.001 102 24.3 1.877 0.709 0.7495
30 minute winter 102 33 18.337 1.161 31.5 2.2750 0.0000 SURCHARGED
30 minute winter 102 5.002 103 27.1 1.645 0.742 0.2572
30 minute winter 103 33 17.975 1.408 50.2 9.1370 0.0000 FLOOD RISK
30 minute winter 103 5.003 104 42.6 2.418 1.170 0.6941
30 minute winter 104 34 15.392 0.462 43.0 0.5624 0.0000 SURCHARGED
30 minute winter 104 5.004 2.3 42.9 2.560 1.085 0.1650
15 minute summer 2.3 11 14.517 0.108 44.5 0.2193 0.0000 OK
15 minute summer 2.3 5.005 2.4 44.1 0.895 0.181 3.3414
15 minute winter 2.4 13 14.162 0.477 134.1 0.7119 0.0000 SURCHARGED
15 minute winter 2.4 3.004 25 121.2 1.055 0.478 7.9501
15 minute winter 25 13 14.081 0.706 317.5 0.8099 0.0000 SURCHARGED
15 minute winter 25 1.009 23.4 317.5 1.256 0.604 1.2019
120 minute winter 23.4 98 14.046 0.696 151.9 0.8230 0.0000 SURCHARGED
120 minute winter 23.4 1.010 23.3 151.5 1.383 0.284 2.2985
120 minute winter 23.3 100 14.045 0.744 151.9 0.8835 0.0000 SURCHARGED
120 minute winter 23.3 1.011 23.2 152.0 0.939 0.178 4.5899
120 minute winter 23.2 100 14.044 0.994 152.2 1.1446 0.0000 SURCHARGED
120 minute winter 23.2 1.012 Pump in 152.2 0.638 0.377 4.0683
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 20
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 2 year Cri cal Storm Dura on. Lowest mass balance: 99.44%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
120 minute winter Pump in 102 14.044 1.044 205.2 205.0223 0.0000 SURCHARGED
120 minute winter Pump in Head/Flow Pond 90.4 1132.4
15 minute summer Pond 1 12.786 0.000 88.4 0.0000 0.0000 OK
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 21
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 30 year Cri cal Storm Dura on. Lowest mass balance: 99.44%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 8.1 10 21.783 0.133 55.3 0.5028 0.0000 OK
15 minute winter 8.1 1.000 8 53.4 2.241 0.631 1.5666
15 minute winter 8 10 20.008 0.233 177.3 1.3617 0.0000 OK
15 minute winter 8 1.001 9 173.7 1.876 0.729 8.0042
15 minute winter 9.1 12 19.173 0.383 26.7 0.7560 0.0000 SURCHARGED
15 minute winter 9.1 2.000 9 25.3 0.872 0.844 1.2988
15 minute winter 9 12 19.116 0.586 253.5 1.6006 0.0000 SURCHARGED
15 minute winter 9 1.002 10 234.0 2.406 1.025 5.4297
15 minute winter 10 12 18.457 0.567 291.6 1.4165 0.0000 SURCHARGED
15 minute winter 10 1.003 11.1 269.3 3.559 0.669 4.8789
15 minute winter 11.1 12 17.551 1.441 310.1 3.5615 0.0000 FLOOD RISK
15 minute winter 11.1 1.004 11 293.0 2.657 0.675 3.1243
15 minute winter 11 12 16.748 1.983 364.4 6.2968 0.0000 FLOOD RISK
15 minute winter 11 1.005 12 361.9 2.284 1.229 12.6948
15 minute winter 12 11 15.600 1.500 391.2 3.7170 17.9159 FLOOD
15 minute winter 12 1.006 15 320.8 2.162 0.924 3.4351
15 minute winter 15 12 15.341 1.641 382.4 4.4807 0.0000 SURCHARGED
15 minute winter 15 1.007 24.1 365.3 1.297 1.153 26.3002
15 minute winter 13 10 15.700 1.275 84.2 5.9823 10.3426 FLOOD
15 minute winter 13 6.000 23 46.2 1.161 1.390 1.3976
15 minute winter 23 11 15.658 1.378 88.8 3.9259 0.0000 FLOOD RISK
15 minute winter 23 6.001 24 67.6 1.700 1.657 0.9316
15 minute winter 200 10 20.647 0.147 61.6 0.3790 0.0000 OK
15 minute winter 200 8.000 201 60.5 1.424 0.494 2.8778
15 minute winter 201 11 19.914 0.214 93.9 0.4981 0.0000 OK
15 minute winter 201 8.001 202 90.7 1.734 0.820 3.7017
15 minute winter 202 11 19.155 0.230 121.1 0.5844 0.0000 OK
15 minute winter 202 8.002 203 120.5 1.272 0.718 6.4159
15 minute winter 203 11 18.812 0.387 129.6 0.6817 0.0000 SURCHARGED
15 minute winter 203 8.003 204 126.5 1.156 1.142 1.6737
15 minute winter 204 12 18.721 0.344 132.4 0.5638 0.0000 OK
15 minute winter 204 8.004 205 132.3 1.374 1.182 1.0521
15 minute winter 205 11 18.419 0.152 164.1 0.3873 0.0000 OK
15 minute winter 205 8.005 206 162.8 2.289 0.252 4.7834
15 minute winter 206 12 16.761 0.486 171.9 0.8414 0.0000 OK
15 minute winter 206 8.006 207 169.7 0.862 0.703 3.0913
15 minute winter 207 12 16.729 0.491 188.8 1.2343 0.0000 OK
15 minute winter 207 8.007 208 191.8 1.004 0.803 8.7416
15 minute winter 220 10 16.867 0.217 123.5 1.3819 0.0000 OK
15 minute winter 220 9.000 208 121.0 1.819 0.543 2.4554
15 minute winter 208 12 16.654 0.517 316.3 1.3032 0.0000 OK
15 minute winter 208 8.008 209 313.2 1.794 1.439 7.2525
15 minute winter 209 12 16.372 0.319 381.2 1.2864 0.0000 OK
15 minute winter 209 8.009 210 382.4 2.342 0.691 15.4705
15 minute winter 210 12 15.360 0.627 419.5 2.3769 0.0000 OK
15 minute winter 210 8.010 211 412.3 1.216 1.064 13.8816
15 minute winter 211 13 15.256 0.594 425.9 1.4662 0.0000 OK
15 minute winter 211 8.011 212 419.8 1.327 1.079 6.7527
15 minute winter 212 13 15.162 0.537 419.8 0.9495 0.0000 OK
15 minute winter 212 8.012 213 421.3 1.571 1.090 13.6015
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 22
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 30 year Cri cal Storm Dura on. Lowest mass balance: 99.44%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 221 11 16.782 0.432 188.8 3.1566 0.0000 OK
15 minute winter 221 10.000 222 179.5 1.227 1.127 11.1131
15 minute winter 222 11 16.557 0.388 179.5 0.4388 0.0000 OK
15 minute winter 222 10.001 223 173.4 1.347 1.072 7.4952
15 minute winter 226 11 16.725 0.375 106.1 1.7252 0.0000 OK
15 minute winter 226 11.000 227 96.9 0.720 0.608 6.2467
15 minute winter 227 11 16.690 0.443 186.7 1.7339 0.0000 OK
15 minute winter 227 11.001 228 179.5 1.165 1.126 11.0111
15 minute winter 228 11 16.468 0.398 191.7 0.5945 0.0000 OK
15 minute winter 228 11.002 223 188.6 1.423 1.178 2.6516
15 minute winter 223 12 16.071 0.201 361.9 0.2871 0.0000 OK
15 minute winter 223 10.002 224 362.4 2.835 0.203 1.7351
15 minute winter 224 12 15.343 0.362 362.4 0.5179 0.0000 OK
15 minute winter 224 10.003 225 362.8 1.657 0.352 2.4956
15 minute winter 225 12 15.289 0.555 362.8 0.7938 0.0000 OK
15 minute winter 225 10.004 213 355.5 1.503 1.253 16.5004
15 minute winter 229 11 15.084 0.187 43.4 0.6649 0.0000 OK
15 minute winter 229 12.000 230 40.9 0.581 0.271 2.6053
15 minute winter 232 11 15.071 0.212 36.0 0.6651 0.0000 OK
15 minute winter 232 13.000 230 34.0 0.484 0.224 1.3991
15 minute winter 230 11 15.063 0.243 74.5 0.3482 0.0000 OK
15 minute winter 230 12.001 231 74.3 0.893 0.494 1.0589
15 minute winter 231 11 15.016 0.224 74.3 0.3210 0.0000 OK
15 minute winter 231 12.002 213 74.1 1.047 0.492 0.9672
240 minute winter 213 232 14.970 0.508 225.5 986.7770 0.0000 OK
240 minute winter 213 8.013 214 43.0 0.623 0.091 8.6913
240 minute winter 214 232 14.970 0.547 43.0 0.9661 0.0000 OK
240 minute winter 214 8.014 215 43.4 0.583 0.092 17.2433
240 minute winter 215 228 14.969 0.616 43.4 1.0888 0.0000 OK
240 minute winter 215 8.015 216 43.9 0.550 0.093 28.7362
15 minute winter 233 12 15.107 0.339 111.6 2.0373 0.0000 OK
15 minute winter 233 14.000 234 95.3 0.759 0.342 11.5643
15 minute winter 234 12 15.100 0.433 143.1 1.3274 0.0000 OK
15 minute winter 234 14.001 235 116.0 0.607 0.416 14.2164
15 minute winter 240 12 15.093 0.400 119.0 2.4167 0.0000 OK
15 minute winter 240 15.000 241 97.3 0.691 0.349 13.3964
15 minute winter 241 12 15.085 0.492 97.3 0.5566 0.0000 OK
15 minute winter 241 15.001 235 91.9 0.365 0.330 3.9402
15 minute winter 235 12 15.080 0.513 256.6 1.9294 0.0000 OK
15 minute winter 235 14.002 236 254.0 1.000 0.912 9.0265
15 minute winter 236 12 15.010 0.502 298.3 1.7467 0.0000 OK
15 minute winter 236 14.003 237 296.0 1.257 1.063 10.4723
240 minute winter 237 228 14.969 0.535 70.9 0.7652 0.0000 OK
240 minute winter 237 14.004 238 69.1 0.880 0.244 2.0292
240 minute winter 242 212 14.969 0.265 11.6 0.9610 0.0000 OK
240 minute winter 242 16.000 243 11.6 0.535 0.076 5.6786
240 minute winter 243 212 14.969 0.372 11.6 0.4203 0.0000 OK
240 minute winter 243 16.001 238 10.5 0.591 0.070 1.6897
240 minute winter 238 228 14.969 0.698 79.0 1.2328 0.0000 OK
240 minute winter 238 12.005 239 78.3 0.537 0.171 4.0247
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 23
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 30 year Cri cal Storm Dura on. Lowest mass balance: 99.44%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
240 minute winter 239 228 14.969 0.711 78.3 1.2557 0.0000 OK
240 minute winter 239 12.006 216 77.9 0.546 0.179 3.0807
240 minute winter 216 228 14.969 0.720 85.8 1.2716 0.0000 OK
240 minute winter 216 8.016 217 71.2 0.522 0.151 39.4227
240 minute winter 217 228 14.967 0.852 71.2 1.5059 0.0000 SURCHARGED
240 minute winter 217 8.017 218 56.2 0.408 0.119 30.9568
240 minute winter 218 228 14.966 0.955 56.2 3.3084 0.0000 SURCHARGED
240 minute winter 218 Hydro-Brake® 219 50.0
240 minute winter 219 208 14.687 0.721 50.0 0.8158 0.0000 SURCHARGED
240 minute winter 219 8.019 Pump in 50.4 1.064 0.786 3.0460
15 minute winter 24 12 15.254 1.194 76.9 1.7096 0.0000 SURCHARGED
15 minute winter 24 6.002 24.1 69.8 1.229 0.786 2.8531
15 minute winter 24.1 12 15.084 1.584 431.2 1.7920 0.0000 SURCHARGED
15 minute winter 24.1 1.008 25 422.5 1.500 0.554 2.8717
15 minute winter 19 10 19.787 0.187 61.2 0.6031 0.0000 OK
15 minute winter 19 3.000 20 60.2 1.926 0.910 0.7699
15 minute winter 20 10 19.344 0.144 94.3 0.4097 0.0000 OK
15 minute winter 20 3.001 21 92.9 3.594 0.684 0.9734
15 minute winter 18.1 10 21.134 0.110 49.7 0.4369 0.0000 OK
15 minute winter 18.1 4.000 18 49.7 3.293 0.873 0.2973
15 minute winter 17 10 22.264 0.064 21.1 0.1188 0.0000 OK
15 minute winter 17 7.000 18 20.8 1.943 0.180 1.5256
15 minute winter 18 12 19.385 0.345 118.0 0.9936 0.0000 SURCHARGED
15 minute winter 18 4.001 21 102.1 2.873 0.993 2.4463
15 minute winter 21 11 16.584 0.154 219.5 0.3021 0.0000 OK
15 minute winter 21 3.002 22 220.9 1.843 0.228 3.1284
15 minute winter 22 12 15.538 1.823 226.8 2.3172 0.0000 SURCHARGED
15 minute winter 22 3.003 2.4 208.8 1.318 1.289 1.8707
60 minute winter 100 36 20.000 0.800 11.0 2.3848 9.8966 FLOOD
60 minute winter 100 5.000 101 7.5 0.602 0.281 0.3604
30 minute winter 101 21 20.000 1.257 53.8 7.9618 21.1424 FLOOD
30 minute winter 101 5.001 102 31.0 1.894 0.905 0.7495
30 minute winter 102 26 19.093 1.917 44.4 3.7566 0.0000 SURCHARGED
30 minute winter 102 5.002 103 43.4 2.465 1.190 0.2572
60 minute winter 103 31 18.000 1.433 99.7 9.3002 69.8581 FLOOD
60 minute winter 103 5.003 104 42.9 2.434 1.177 0.6941
15 minute winter 104 12 16.089 1.159 43.8 1.4121 0.0000 SURCHARGED
15 minute winter 104 5.004 2.3 45.0 2.606 1.137 0.1871
15 minute winter 2.3 12 15.490 1.081 58.6 2.1987 0.0000 FLOOD RISK
15 minute winter 2.3 5.005 2.4 71.3 0.885 0.294 5.4446
15 minute winter 2.4 12 15.445 1.760 275.5 2.6289 0.0000 FLOOD RISK
15 minute winter 2.4 3.004 25 276.3 1.744 1.089 7.9501
15 minute winter 25 12 14.998 1.623 688.3 1.8628 0.0000 SURCHARGED
15 minute winter 25 1.009 23.4 686.6 2.438 1.305 1.2019
15 minute winter 23.4 12 14.808 1.458 688.7 1.7230 0.0000 SURCHARGED
15 minute winter 23.4 1.010 23.3 687.1 2.440 1.290 2.2985
30 minute winter 23.3 21 14.608 1.307 653.1 1.5514 0.0000 SURCHARGED
30 minute winter 23.3 1.011 23.2 652.3 2.316 0.763 4.5899
240 minute winter 23.2 200 14.604 1.554 217.9 1.7882 0.0000 SURCHARGED
240 minute winter 23.2 1.012 Pump in 217.6 0.773 0.539 4.0683
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 24
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 30 year Cri cal Storm Dura on. Lowest mass balance: 99.44%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
240 minute winter Pump in 200 14.602 1.602 279.7 766.4983 0.0000 SURCHARGED
240 minute winter Pump in Head/Flow Pond 96.0 3206.5
15 minute summer Pond 1 12.786 0.000 91.7 0.0000 0.0000 OK
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 25
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year +40% CC Cri cal Storm Dura on. Lowest mass balance: 99.44%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 8.1 11 22.775 1.125 99.5 4.2525 1.1202 FLOOD
15 minute winter 8.1 1.000 8 76.5 2.316 0.903 2.6022
15 minute winter 8 10 21.195 1.420 288.6 8.2857 17.5320 FLOOD
15 minute winter 8 1.001 9 215.1 1.998 0.903 9.7078
15 minute winter 9.1 10 20.500 1.710 48.1 3.3738 2.3639 FLOOD
15 minute winter 9.1 2.000 9 30.8 0.805 1.026 1.2988
15 minute winter 9 10 20.365 1.835 311.9 5.0151 9.1103 FLOOD
15 minute winter 9 1.002 10 271.2 2.459 1.188 5.4297
15 minute winter 10 10 19.469 1.579 358.3 3.9425 0.0000 SURCHARGED
15 minute winter 10 1.003 11.1 357.9 3.551 0.889 4.8789
15 minute winter 11.1 9 17.750 1.640 431.4 4.0541 37.4236 FLOOD
15 minute winter 11.1 1.004 11 321.8 2.918 0.741 3.1243
15 minute winter 11 9 16.985 2.220 438.0 7.0507 6.9124 FLOOD
15 minute winter 11 1.005 12 396.6 2.503 1.347 12.6948
60 minute winter 12 29 15.600 1.500 412.1 3.7170 127.1764 FLOOD
60 minute winter 12 1.006 15 291.3 1.839 0.839 3.4351
60 minute winter 15 36 15.456 1.756 340.8 4.7961 0.0000 SURCHARGED
60 minute winter 15 1.007 24.1 334.2 1.186 1.055 26.3002
30 minute winter 13 14 15.700 1.275 117.2 5.9823 52.3230 FLOOD
30 minute winter 13 6.000 23 41.8 1.052 1.260 1.3976
15 minute winter 23 9 15.700 1.420 98.2 4.0456 5.9805 FLOOD
15 minute winter 23 6.001 24 74.7 1.879 1.832 0.9316
15 minute winter 200 12 21.590 1.090 110.9 2.8047 0.0000 SURCHARGED
15 minute winter 200 8.000 201 101.5 1.541 0.829 4.6387
15 minute winter 201 12 21.100 1.400 158.1 3.2627 0.0000 FLOOD RISK
15 minute winter 201 8.001 202 139.0 1.974 1.258 4.9839
15 minute winter 202 12 19.843 0.918 187.4 2.3271 0.0000 SURCHARGED
15 minute winter 202 8.002 203 186.6 1.692 1.111 7.8062
15 minute winter 203 12 19.143 0.718 200.2 1.2643 0.0000 SURCHARGED
15 minute winter 203 8.003 204 200.8 1.821 1.813 1.7083
15 minute winter 204 12 18.899 0.522 209.7 0.8569 0.0000 SURCHARGED
15 minute winter 204 8.004 205 210.1 1.908 1.877 1.1794
15 minute winter 205 12 18.528 0.261 267.0 0.6659 0.0000 OK
15 minute winter 205 8.005 206 263.4 2.255 0.408 6.1428
15 minute winter 206 11 18.000 1.725 277.0 2.9894 6.1213 FLOOD
15 minute winter 206 8.006 207 263.5 1.220 1.092 3.1906
15 minute winter 207 11 17.962 1.724 284.8 4.3373 0.0000 FLOOD RISK
15 minute winter 207 8.007 208 297.3 1.376 1.244 8.8809
15 minute winter 220 11 18.000 1.350 222.5 8.5928 4.5371 FLOOD
15 minute winter 220 9.000 208 162.2 1.845 0.727 3.2260
15 minute winter 208 11 17.800 1.663 465.5 4.1889 0.0000 FLOOD RISK
15 minute winter 208 8.008 209 470.6 2.178 2.162 8.8809
15 minute winter 209 11 17.337 1.284 585.0 5.1716 0.0000 SURCHARGED
15 minute winter 209 8.009 210 569.9 2.638 1.030 19.4427
15 minute winter 210 11 15.898 1.165 647.3 4.4115 0.0000 FLOOD RISK
15 minute winter 210 8.010 211 641.8 1.798 1.656 14.6354
480 minute winter 211 464 15.685 1.023 107.5 2.5266 0.0000 SURCHARGED
480 minute winter 211 8.011 212 104.9 0.797 0.270 7.5662
480 minute winter 212 464 15.685 1.060 104.9 1.8727 0.0000 SURCHARGED
480 minute winter 212 8.012 213 102.0 0.877 0.264 18.2269
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 26
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year +40% CC Cri cal Storm Dura on. Lowest mass balance: 99.44%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 221 11 17.861 1.511 340.1 11.0339 0.0000 FLOOD RISK
15 minute winter 221 10.000 222 317.6 2.004 1.994 11.6708
15 minute winter 222 11 17.035 0.866 317.6 0.9793 0.0000 SURCHARGED
15 minute winter 222 10.001 223 316.0 2.002 1.954 8.9541
15 minute winter 226 11 17.868 1.518 191.1 6.9814 0.0000 FLOOD RISK
15 minute winter 226 11.000 227 180.5 1.139 1.131 6.6174
15 minute winter 227 11 17.702 1.455 333.8 5.6971 0.0000 FLOOD RISK
15 minute winter 227 11.001 228 334.3 2.110 2.097 11.3953
15 minute winter 228 11 16.806 0.736 356.3 1.0990 0.0000 SURCHARGED
15 minute winter 228 11.002 223 356.3 2.250 2.227 3.1142
15 minute winter 223 11 16.347 0.477 672.2 0.6825 0.0000 OK
15 minute winter 223 10.002 224 667.6 2.883 0.374 3.4811
15 minute winter 224 11 16.121 1.140 667.6 1.6312 0.0000 SURCHARGED
15 minute winter 224 10.003 225 663.4 2.355 0.645 3.1258
15 minute winter 225 12 15.880 1.146 663.4 1.6393 0.0000 FLOOD RISK
15 minute winter 225 10.004 213 668.0 2.376 2.354 19.2294
480 minute winter 229 464 15.685 0.788 9.5 2.7993 0.0000 SURCHARGED
480 minute winter 229 12.000 230 8.8 0.390 0.058 5.5124
480 minute winter 232 464 15.685 0.826 7.8 2.5866 0.0000 SURCHARGED
480 minute winter 232 13.000 230 7.0 0.319 0.046 2.7537
480 minute winter 230 464 15.685 0.865 15.7 1.2376 0.0000 SURCHARGED
480 minute winter 230 12.001 231 14.9 0.569 0.099 2.0168
480 minute winter 231 464 15.685 0.893 14.9 1.2776 0.0000 SURCHARGED
480 minute winter 231 12.002 213 14.7 0.651 0.098 2.1643
480 minute winter 213 464 15.685 1.223 271.5 2614.0500 0.0000 SURCHARGED
480 minute winter 213 8.013 214 49.1 0.635 0.104 11.5633
480 minute winter 214 464 15.684 1.261 49.1 2.2287 0.0000 SURCHARGED
480 minute winter 214 8.014 215 49.1 0.607 0.104 20.7631
480 minute winter 215 464 15.684 1.331 49.1 2.3514 0.0000 SURCHARGED
480 minute winter 215 8.015 216 49.1 0.549 0.104 30.7979
15 minute winter 233 11 16.000 1.232 201.1 7.4129 3.3741 FLOOD
15 minute winter 233 14.000 234 151.9 0.797 0.545 17.0725
15 minute winter 234 11 15.989 1.322 227.4 4.0529 0.0000 FLOOD RISK
15 minute winter 234 14.001 235 224.9 0.798 0.806 16.8877
15 minute winter 240 11 16.000 1.307 214.5 7.8982 1.7086 FLOOD
15 minute winter 240 15.000 241 186.7 0.732 0.669 16.8877
15 minute winter 241 11 15.944 1.351 186.7 1.5283 0.0000 FLOOD RISK
15 minute winter 241 15.001 235 181.0 0.643 0.650 4.4052
15 minute winter 235 11 15.928 1.361 504.5 5.1190 0.0000 FLOOD RISK
15 minute winter 235 14.002 236 504.3 1.791 1.811 10.0060
30 minute winter 236 20 15.743 1.235 476.7 4.2995 0.0000 FLOOD RISK
30 minute winter 236 14.003 237 465.3 1.652 1.672 12.5622
480 minute winter 237 464 15.683 1.249 72.6 1.7872 0.0000 SURCHARGED
480 minute winter 237 14.004 238 72.5 0.738 0.256 2.1368
480 minute winter 242 464 15.683 0.979 13.1 3.5541 0.0000 SURCHARGED
480 minute winter 242 16.000 243 12.2 0.464 0.080 7.5944
480 minute winter 243 464 15.683 1.086 12.2 1.2281 0.0000 SURCHARGED
480 minute winter 243 16.001 238 12.0 0.512 0.080 1.8576
480 minute winter 238 464 15.683 1.412 84.1 2.4948 0.0000 SURCHARGED
480 minute winter 238 12.005 239 83.9 0.456 0.184 4.1275
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 27
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year +40% CC Cri cal Storm Dura on. Lowest mass balance: 99.44%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
480 minute winter 239 464 15.683 1.425 83.9 2.5178 0.0000 SURCHARGED
480 minute winter 239 12.006 216 83.7 0.484 0.192 3.1323
480 minute winter 216 464 15.683 1.434 83.7 2.5338 0.0000 SURCHARGED
480 minute winter 216 8.016 217 62.2 0.517 0.131 39.6892
480 minute winter 217 464 15.682 1.567 62.2 2.7683 0.0000 SURCHARGED
480 minute winter 217 8.017 218 53.4 0.397 0.113 30.9568
480 minute winter 218 464 15.681 1.670 53.4 5.7838 0.0000 SURCHARGED
480 minute winter 218 Hydro-Brake® 219 50.0
480 minute winter 219 392 15.432 1.466 50.0 1.6586 0.0000 SURCHARGED
480 minute winter 219 8.019 Pump in 50.0 1.064 0.779 3.0460
60 minute winter 24 36 15.421 1.361 67.4 1.9492 0.0000 FLOOD RISK
60 minute winter 24 6.002 24.1 64.3 1.062 0.724 2.8531
480 minute winter 24.1 368 15.403 1.903 144.4 2.1522 0.0000 FLOOD RISK
480 minute winter 24.1 1.008 25 144.2 0.746 0.189 2.8717
15 minute winter 19 12 20.913 1.313 110.2 4.2284 0.0000 FLOOD RISK
15 minute winter 19 3.000 20 91.4 2.299 1.382 0.9862
15 minute winter 20 12 19.988 0.788 152.0 2.2475 0.0000 FLOOD RISK
15 minute winter 20 3.001 21 141.0 3.683 1.038 1.4957
15 minute winter 18.1 10 21.964 0.940 89.5 3.7431 6.8251 FLOOD
15 minute winter 18.1 4.000 18 50.4 3.331 0.885 0.3332
15 minute winter 17 10 22.288 0.088 38.1 0.1623 0.0000 OK
15 minute winter 17 7.000 18 37.7 1.911 0.327 1.7012
15 minute winter 18 11 20.500 1.460 169.7 4.2106 3.5318 FLOOD
15 minute winter 18 4.001 21 122.6 3.083 1.192 2.4447
15 minute winter 21 11 16.671 0.241 302.8 0.4741 0.0000 OK
15 minute winter 21 3.002 22 302.5 2.180 0.312 3.7159
15 minute winter 22 11 15.937 2.222 312.6 2.8242 0.0000 FLOOD RISK
15 minute winter 22 3.003 2.4 312.8 1.975 1.931 1.8707
120 minute winter 100 54 20.000 0.800 14.7 2.3848 28.9763 FLOOD
120 minute winter 100 5.000 101 6.1 0.583 0.229 0.3604
60 minute winter 101 29 20.000 1.257 89.3 7.9618 81.9133 FLOOD
60 minute winter 101 5.001 102 28.6 1.870 0.834 0.7495
30 minute winter 102 26 19.554 2.377 52.0 4.6599 0.0000 SURCHARGED
30 minute winter 102 5.002 103 51.7 2.940 1.419 0.2572
120 minute winter 103 48 18.000 1.433 121.8 9.3002 193.2067 FLOOD
120 minute winter 103 5.003 104 42.7 2.427 1.174 0.6941
30 minute winter 104 22 16.354 1.424 43.4 1.7348 0.0000 SURCHARGED
30 minute winter 104 5.004 2.3 44.3 2.518 1.120 0.1871
15 minute winter 2.3 9 15.760 1.351 85.2 2.7479 6.4814 FLOOD
15 minute winter 2.3 5.005 2.4 69.9 0.866 0.288 5.4446
15 minute winter 2.4 10 15.725 2.040 384.8 3.0478 14.3220 FLOOD
15 minute winter 2.4 3.004 25 320.6 2.024 1.264 7.9501
480 minute winter 25 368 15.402 2.027 244.8 2.3272 0.0000 FLOOD RISK
480 minute winter 25 1.009 23.4 244.5 1.009 0.465 1.2019
480 minute winter 23.4 368 15.400 2.050 245.0 2.4229 0.0000 SURCHARGED
480 minute winter 23.4 1.010 23.3 244.8 1.323 0.460 2.2985
480 minute winter 23.3 368 15.397 2.096 245.4 2.4881 0.0000 SURCHARGED
480 minute winter 23.3 1.011 23.2 245.2 0.929 0.287 4.5899
480 minute winter 23.2 368 15.394 2.344 245.4 2.6975 0.0000 SURCHARGED
480 minute winter 23.2 1.012 Pump in 245.1 0.870 0.607 4.0683
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Hardstanding NetworkSam Raven06/03/2020
Page 28
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year +40% CC Cri cal Storm Dura on. Lowest mass balance: 99.44%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
480 minute winter Pump in 376 15.391 2.391 305.1 1683.2920 0.0000 SURCHARGED
480 minute winter Pump in Head/Flow Pond 100.0 7198.9
15 minute summer Pond 1 12.786 0.000 93.3 0.0000 0.0000 OK
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Ground/Roof WaterSam Raven06/03/2020
Page 1
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Design Se ngs
Rainfall MethodologyReturn Period (years)
Addi onal Flow (%)FSR Region
M5-60 (mm)Ra o-R
CVTime of Entry (mins)
FSR10England and Wales20.0000.4000.7505.00
Maximum Time of Concentra on (mins)Maximum Rainfall (mm/hr)
Minimum Velocity (m/s)Connec on Type
Minimum Backdrop Height (m)Preferred Cover Depth (m)
Include Intermediate GroundEnforce best prac ce design rules
30.0050.01.00Level So ts6.0001.200✓✓
Nodes
Name Area(ha)
T of E(mins)
CoverLevel(m)
Diameter(mm)
Eas ng(m)
Northing(m)
Depth(m)
66.17511.122.134In25.425.125.225.3125123501502600601602603604605606609610611612613614615607503504121122
0.2680.0320.1530.3070.2580.0190.1690.0200.5090.0200.0170.1070.0000.0000.0000.0110.1090.0570.1520.0860.0000.1450.0000.0000.0680.0680.2060.0000.0930.0000.0320.0740.0120.0000.156
0.0800.154
5.005.005.005.005.005.005.005.005.005.005.005.00
30.005.005.005.005.00
5.00
5.005.005.00
5.00
5.005.005.00
5.00
5.005.00
20.80017.97018.12515.95020.99016.70016.70015.95015.73516.00016.00015.60015.65515.77515.67015.80016.50021.25020.70016.00016.00016.00016.00016.00016.00016.00016.00016.00016.00016.00016.00016.00016.00016.00019.30013.00016.90017.000
12001350135013501350135013501350135012001200135013501350120021001200210021001200120013501350135013501350120012001350135013501350135013502100210015001500
573814.692573814.094573814.029573809.820573906.260573905.771573901.622573901.225573900.598573809.815573809.607573909.011573908.445573860.312573810.729573794.632573857.795573794.483573749.012573731.762573731.762573738.259573738.259573731.316573731.316573720.872573657.163573657.163573649.394573649.394573666.923573666.924573683.890573683.892573675.104573583.946573957.338573943.346
157755.780157813.643157820.773157858.434157758.616157815.885157820.070157858.643157909.435157911.524157939.224157909.938157965.810157965.452157954.180157939.290157973.813157982.278157982.399157828.822157848.460157848.460157888.375157926.107157951.824157970.076157828.822157881.879157881.879157909.247157909.244157954.116157954.116157970.076157982.815157981.007157925.666157973.902
1.7001.7202.1501.4003.8302.0002.0801.7001.7852.4502.5501.4001.7001.9401.9803.0502.6508.6048.0991.5001.5811.6831.8061.9252.0052.0701.5001.7171.8241.9091.9642.1032.1562.2816.7732.0000.9002.300
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Ground/Roof WaterSam Raven06/03/2020
Page 2
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Links
Name USNode
DSNode
Length(m)
ks (mm) /n
US IL(m)
DS IL(m)
Fall(m)
Slope(1:X)
Dia(mm)
T of C(mins)
Rain(mm/hr)
Name Vel(m/s)
Cap(l/s)
Flow(l/s)
USDepth
(m)
DSDepth
(m)
Σ Area(ha)
Σ AddIn ow
(l/s)
1.000 6 6.1 57.866 0.600 19.100 16.470 2.630 22.0 225 5.34 50.0
1.000 2.801 111.4 36.3 1.475 1.275 0.268 0.0
1.001 6.1 7 7.130 0.600 16.250 15.975 0.275 25.9 450 5.38 50.0
1.001 4.005 636.9 40.7 1.270 1.700 0.300 0.0
1.002 7 5 37.896 0.600 15.975 14.550 1.425 26.6 450 5.53 50.0
1.002 3.954 628.8 61.4 1.700 0.950 0.453 0.0
1.003 5 4 53.090 0.600 14.550 13.699 0.851 62.4 450 5.87 50.0
1.003 2.577 409.9 103.0 0.950 1.851 0.760 0.0
2.000 1 1.1 57.271 0.600 17.160 14.703 2.457 23.3 375 5.26 50.0
2.000 3.766 416.0 35.0 3.455 1.622 0.258 0.0
2.001 1.1 2 5.893 0.600 14.700 14.650 0.050 117.9 375 5.26 50.0
2.001 1.668 184.2 37.5 1.625 1.675 0.277 0.0
2.002 2 2.1 38.576 0.600 14.620 14.250 0.370 104.3 375 5.63 50.0
2.002 1.774 195.9 60.4 1.705 1.325 0.446 0.0
2.003 2.1 3 50.795 0.600 14.250 13.950 0.300 169.3 375 6.33 49.1
2.003 1.389 153.4 62.0 1.325 1.410 0.466 0.0
2.004 3 4 90.807 0.600 13.950 13.550 0.400 227.0 450 7.77 44.3
2.004 1.345 213.9 117.1 1.335 2.000 0.975 0.0
1.004 4 In 27.701 0.600 13.550 13.450 0.100 277.0 600 8.26 42.9
1.004 1.458 412.2 204.1 1.850 1.950 1.755 0.0
1.005 In 125 14.975 0.600 13.450 13.350 0.100 149.8 600 8.64 41.9
1.005 1.987 561.9 201.2 1.950 1.850 1.772 0.0
3.000 25.4 25.1 55.875 0.600 14.200 13.955 0.245 228.1 450 5.70 50.0
3.000 1.342 213.4 14.5 0.950 1.250 0.107 0.0
3.001 25.1 25.2 48.134 0.600 13.955 13.835 0.120 401.1 450 6.48 48.5
3.001 1.009 160.4 14.1 1.250 1.490 0.107 0.0
3.002 25.2 25.3 50.847 0.600 13.835 13.690 0.145 350.7 450 7.27 45.9
3.002 1.080 171.7 13.3 1.490 1.530 0.107 0.0
3.003 25.3 125 21.928 0.600 13.690 13.550 0.140 156.6 450 7.73 44.4
3.003 1.622 257.9 12.9 1.530 1.800 0.107 0.0
1.006 125 501 42.988 0.600 12.750 12.646 0.104 413.3 1200 30.00 20.2
1.006 1.833 2073.6 103.5 1.850 7.404 1.890 0.0
4.000 121 122 50.224 0.600 16.000 14.700 1.300 38.6 500 5.19 50.0
4.000 3.502 687.7 10.8 0.400 1.800 0.080 0.0
4.001 122 123 85.551 0.600 14.700 13.850 0.850 100.6 500 6.77 47.5
4.001 2.165 425.1 30.1 1.800 2.150 0.234 0.0
4.002 123 501 63.875 0.600 13.850 13.346 0.504 126.7 500 7.32 45.7
4.002 1.928 378.6 42.5 2.150 7.404 0.343 0.0
1.007 501 502 45.471 0.600 12.646 12.601 0.045 1010.5 1200 30.00 20.2
1.007 1.168 1321.2 125.5 7.404 6.899 2.290 0.0
1.008 502 503 73.909 0.600 12.601 12.527 0.074 998.8 1200 30.00 20.2
1.008 1.175 1329.0 133.8 6.899 5.573 2.442 0.0
5.000 600 601 19.638 0.600 14.500 14.419 0.081 242.4 300 5.33 50.0
5.000 1.005 71.0 11.7 1.200 1.281 0.086 0.0
5.001 601 602 6.497 0.600 14.419 14.392 0.027 240.6 300 5.43 50.0
5.001 1.009 71.3 11.7 1.281 1.308 0.086 0.0
5.002 602 603 39.915 0.600 14.317 14.194 0.123 324.5 375 6.10 50.0
5.002 1.000 110.5 31.3 1.308 1.431 0.231 0.0
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Ground/Roof WaterSam Raven06/03/2020
Page 3
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Links
Name USNode
DSNode
Length(m)
ks (mm) /n
US IL(m)
DS IL(m)
Fall(m)
Slope(1:X)
Dia(mm)
T of C(mins)
Rain(mm/hr)
Name Vel(m/s)
Cap(l/s)
Flow(l/s)
USDepth
(m)
DSDepth
(m)
Σ Area(ha)
Σ AddIn ow
(l/s)
5.003 603 604 38.365 0.600 14.194 14.075 0.119 322.4 375 6.74 47.6
5.003 1.003 110.8 29.8 1.431 1.550 0.231 0.0
5.004 604 605 25.717 0.600 14.075 13.995 0.080 321.5 375 7.16 46.2
5.004 1.005 111.0 28.9 1.550 1.630 0.231 0.0
5.005 605 606 21.029 0.600 13.995 13.930 0.065 323.5 375 7.51 45.1
5.005 1.002 110.6 36.6 1.630 1.695 0.299 0.0
5.006 606 607 36.980 0.600 13.930 13.794 0.136 271.9 375 8.08 43.4
5.006 1.094 120.8 43.2 1.695 1.831 0.367 0.0
7.000 609 610 53.057 0.600 14.500 14.283 0.217 244.5 300 5.88 50.0
7.000 1.001 70.7 27.9 1.200 1.417 0.206 0.0
7.001 610 611 7.769 0.600 14.283 14.251 0.032 242.8 300 6.01 50.0
7.001 1.004 71.0 27.9 1.417 1.449 0.206 0.0
7.002 611 612 27.368 0.600 14.176 14.091 0.085 322.0 375 6.47 48.6
7.002 1.004 110.9 39.4 1.449 1.534 0.299 0.0
7.003 612 613 17.529 0.600 14.091 14.036 0.055 318.7 375 6.76 47.6
7.003 1.009 111.5 38.5 1.534 1.589 0.299 0.0
7.004 613 614 44.872 0.600 14.036 13.897 0.139 322.8 375 7.50 45.1
7.004 1.003 110.7 40.5 1.589 1.728 0.331 0.0
7.005 614 615 16.966 0.600 13.897 13.844 0.053 320.1 375 7.78 44.3
7.005 1.007 111.2 48.6 1.728 1.781 0.405 0.0
7.006 615 607 15.960 0.600 13.844 13.794 0.050 319.2 375 8.05 43.5
7.006 1.008 111.4 49.2 1.781 1.831 0.417 0.0
5.007 607 503 15.476 0.600 13.719 13.277 0.442 35.0 450 8.15 43.2
5.007 3.444 547.8 91.9 1.831 5.573 0.784 0.0
1.009 503 504 91.176 0.600 12.527 11.000 1.527 59.7 1200 30.00 20.2
1.009 4.845 5479.7 185.3 5.573 0.800 3.382 0.0
Pipeline Schedule
Link Length(m)
Slope(1:X)
Dia(mm)
LinkType
US CL(m)
US IL(m)
US Depth(m)
DS CL(m)
DS IL(m)
DS Depth(m)
Link USNode
Dia(mm)
NodeType
MHType
DSNode
Dia(mm)
NodeType
MHType
1.000 57.866 22.0 225 Circular_Default Sewer Type 20.800 19.100 1.475 17.970 16.470 1.275
1.000 6 1200 Manhole Adoptable 6.1 1350 Manhole Adoptable
1.001 7.130 25.9 450 Circular_Default Sewer Type 17.970 16.250 1.270 18.125 15.975 1.700
1.001 6.1 1350 Manhole Adoptable 7 1350 Manhole Adoptable
1.002 37.896 26.6 450 Circular_Default Sewer Type 18.125 15.975 1.700 15.950 14.550 0.950
1.002 7 1350 Manhole Adoptable 5 1350 Manhole Adoptable
1.003 53.090 62.4 450 Circular_Default Sewer Type 15.950 14.550 0.950 16.000 13.699 1.851
1.003 5 1350 Manhole Adoptable 4 1200 Manhole Adoptable
2.000 57.271 23.3 375 Circular_Default Sewer Type 20.990 17.160 3.455 16.700 14.703 1.622
2.000 1 1350 Manhole Adoptable 1.1 1350 Manhole Adoptable
2.001 5.893 117.9 375 Circular_Default Sewer Type 16.700 14.700 1.625 16.700 14.650 1.675
2.001 1.1 1350 Manhole Adoptable 2 1350 Manhole Adoptable
2.002 38.576 104.3 375 Circular_Default Sewer Type 16.700 14.620 1.705 15.950 14.250 1.325
2.002 2 1350 Manhole Adoptable 2.1 1350 Manhole Adoptable
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Ground/Roof WaterSam Raven06/03/2020
Page 4
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Pipeline Schedule
Link Length(m)
Slope(1:X)
Dia(mm)
LinkType
US CL(m)
US IL(m)
US Depth(m)
DS CL(m)
DS IL(m)
DS Depth(m)
Link USNode
Dia(mm)
NodeType
MHType
DSNode
Dia(mm)
NodeType
MHType
2.003 50.795 169.3 375 Circular_Default Sewer Type 15.950 14.250 1.325 15.735 13.950 1.410
2.003 2.1 1350 Manhole Adoptable 3 1350 Manhole Adoptable
2.004 90.807 227.0 450 Circular_Default Sewer Type 15.735 13.950 1.335 16.000 13.550 2.000
2.004 3 1350 Manhole Adoptable 4 1200 Manhole Adoptable
1.004 27.701 277.0 600 Circular_Default Sewer Type 16.000 13.550 1.850 16.000 13.450 1.950
1.004 4 1200 Manhole Adoptable In 1200 Manhole Adoptable
1.005 14.975 149.8 600 Circular_Default Sewer Type 16.000 13.450 1.950 15.800 13.350 1.850
1.005 In 1200 Manhole Adoptable 125 2100 Manhole Adoptable
3.000 55.875 228.1 450 Circular_Default Sewer Type 15.600 14.200 0.950 15.655 13.955 1.250
3.000 25.4 1350 Manhole Adoptable 25.1 1350 Manhole Adoptable
3.001 48.134 401.1 450 Circular_Default Sewer Type 15.655 13.955 1.250 15.775 13.835 1.490
3.001 25.1 1350 Manhole Adoptable 25.2 1350 Manhole Adoptable
3.002 50.847 350.7 450 Circular_Default Sewer Type 15.775 13.835 1.490 15.670 13.690 1.530
3.002 25.2 1350 Manhole Adoptable 25.3 1200 Manhole Adoptable
3.003 21.928 156.6 450 Circular_Default Sewer Type 15.670 13.690 1.530 15.800 13.550 1.800
3.003 25.3 1200 Manhole Adoptable 125 2100 Manhole Adoptable
1.006 42.988 413.3 1200 Circular_Default Sewer Type 15.800 12.750 1.850 21.250 12.646 7.404
1.006 125 2100 Manhole Adoptable 501 2100 Manhole Adoptable
4.000 50.224 38.6 500 Circular_Default Sewer Type 16.900 16.000 0.400 17.000 14.700 1.800
4.000 121 1500 Manhole Adoptable 122 1500 Manhole Adoptable
4.001 85.551 100.6 500 Circular_Default Sewer Type 17.000 14.700 1.800 16.500 13.850 2.150
4.001 122 1500 Manhole Adoptable 123 1200 Manhole Adoptable
4.002 63.875 126.7 500 Circular_Default Sewer Type 16.500 13.850 2.150 21.250 13.346 7.404
4.002 123 1200 Manhole Adoptable 501 2100 Manhole Adoptable
1.007 45.471 1010.5 1200 Circular_Default Sewer Type 21.250 12.646 7.404 20.700 12.601 6.899
1.007 501 2100 Manhole Adoptable 502 2100 Manhole Adoptable
1.008 73.909 998.8 1200 Circular_Default Sewer Type 20.700 12.601 6.899 19.300 12.527 5.573
1.008 502 2100 Manhole Adoptable 503 2100 Manhole Adoptable
5.000 19.638 242.4 300 Circular_Default Sewer Type 16.000 14.500 1.200 16.000 14.419 1.281
5.000 600 1200 Manhole Adoptable 601 1200 Manhole Adoptable
5.001 6.497 240.6 300 Circular_Default Sewer Type 16.000 14.419 1.281 16.000 14.392 1.308
5.001 601 1200 Manhole Adoptable 602 1350 Manhole Adoptable
5.002 39.915 324.5 375 Circular_Default Sewer Type 16.000 14.317 1.308 16.000 14.194 1.431
5.002 602 1350 Manhole Adoptable 603 1350 Manhole Adoptable
5.003 38.365 322.4 375 Circular_Default Sewer Type 16.000 14.194 1.431 16.000 14.075 1.550
5.003 603 1350 Manhole Adoptable 604 1350 Manhole Adoptable
5.004 25.717 321.5 375 Circular_Default Sewer Type 16.000 14.075 1.550 16.000 13.995 1.630
5.004 604 1350 Manhole Adoptable 605 1350 Manhole Adoptable
5.005 21.029 323.5 375 Circular_Default Sewer Type 16.000 13.995 1.630 16.000 13.930 1.695
5.005 605 1350 Manhole Adoptable 606 1350 Manhole Adoptable
5.006 36.980 271.9 375 Circular_Default Sewer Type 16.000 13.930 1.695 16.000 13.794 1.831
5.006 606 1350 Manhole Adoptable 607 1350 Manhole Adoptable
7.000 53.057 244.5 300 Circular_Default Sewer Type 16.000 14.500 1.200 16.000 14.283 1.417
7.000 609 1200 Manhole Adoptable 610 1200 Manhole Adoptable
7.001 7.769 242.8 300 Circular_Default Sewer Type 16.000 14.283 1.417 16.000 14.251 1.449
7.001 610 1200 Manhole Adoptable 611 1350 Manhole Adoptable
7.002 27.368 322.0 375 Circular_Default Sewer Type 16.000 14.176 1.449 16.000 14.091 1.534
7.002 611 1350 Manhole Adoptable 612 1350 Manhole Adoptable
7.003 17.529 318.7 375 Circular_Default Sewer Type 16.000 14.091 1.534 16.000 14.036 1.589
7.003 612 1350 Manhole Adoptable 613 1350 Manhole Adoptable
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Ground/Roof WaterSam Raven06/03/2020
Page 5
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Pipeline Schedule
Link Length(m)
Slope(1:X)
Dia(mm)
LinkType
US CL(m)
US IL(m)
US Depth(m)
DS CL(m)
DS IL(m)
DS Depth(m)
Link USNode
Dia(mm)
NodeType
MHType
DSNode
Dia(mm)
NodeType
MHType
7.004 44.872 322.8 375 Circular_Default Sewer Type 16.000 14.036 1.589 16.000 13.897 1.728
7.004 613 1350 Manhole Adoptable 614 1350 Manhole Adoptable
7.005 16.966 320.1 375 Circular_Default Sewer Type 16.000 13.897 1.728 16.000 13.844 1.781
7.005 614 1350 Manhole Adoptable 615 1350 Manhole Adoptable
7.006 15.960 319.2 375 Circular_Default Sewer Type 16.000 13.844 1.781 16.000 13.794 1.831
7.006 615 1350 Manhole Adoptable 607 1350 Manhole Adoptable
5.007 15.476 35.0 450 Circular_Default Sewer Type 16.000 13.719 1.831 19.300 13.277 5.573
5.007 607 1350 Manhole Adoptable 503 2100 Manhole Adoptable
1.009 91.176 59.7 1200 Circular_Default Sewer Type 19.300 12.527 5.573 13.000 11.000 0.800
1.009 503 2100 Manhole Adoptable 504 2100 Manhole Adoptable
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
6
6.1
7
5
1
1.1
2
2.1
573814.692
573814.094
573814.029
573809.820
573906.260
573905.771
573901.622
573901.225
157755.780
157813.643
157820.773
157858.434
157758.616
157815.885
157820.070
157858.643
20.800
17.970
18.125
15.950
20.990
16.700
16.700
15.950
1.700
1.720
2.150
1.400
3.830
2.000
2.080
1.700
1200
1350
1350
1350
1350
1350
1350
1350
0
1
0
1
0
1
0
0
1
0
1
0
1
0
01
01
01
0
01
01
01
0
1.0001.000
1.0011.001
1.0021.002
1.003
2.0002.000
2.0012.001
2.0022.002
2.003
19.10016.470
16.25015.975
15.97514.550
14.550
17.16014.703
14.70014.650
14.62014.250
14.250
225225
450450
450450
450
375375
375375
375375
375
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Ground/Roof WaterSam Raven06/03/2020
Page 6
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
3
4
In
25.4
25.1
25.2
25.3
125
123
501
502
600
601
573900.598
573809.815
573809.607
573909.011
573908.445
573860.312
573810.729
573794.632
573857.795
573794.483
573749.012
573731.762
573731.762
157909.435
157911.524
157939.224
157909.938
157965.810
157965.452
157954.180
157939.290
157973.813
157982.278
157982.399
157828.822
157848.460
15.735
16.000
16.000
15.600
15.655
15.775
15.670
15.800
16.500
21.250
20.700
16.000
16.000
1.785
2.450
2.550
1.400
1.700
1.940
1.980
3.050
2.650
8.604
8.099
1.500
1.581
1350
1200
1200
1350
1350
1350
1200
2100
1200
2100
2100
1200
1200
1
0
1
2
0
1
0
0
1
0
10
1
0
1
2
0
10
1
2
0
10
0
1
0
1
012
01
0
01
01
01
012
01
012
01
0
01
0
2.003
2.0042.0041.003
1.0041.004
1.005
3.0003.000
3.0013.001
3.0023.002
3.0033.0031.005
1.0064.001
4.0024.0021.006
1.0071.007
1.008
5.0005.000
5.001
13.950
13.95013.55013.699
13.55013.450
13.450
14.20013.955
13.95513.835
13.83513.690
13.69013.55013.350
12.75013.850
13.85013.34612.646
12.64612.601
12.601
14.50014.419
14.419
375
450450450
600600
600
450450
450450
450450
450450600
1200500
500500
1200
12001200
1200
300300
300
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Ground/Roof WaterSam Raven06/03/2020
Page 7
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
602
603
604
605
606
609
610
611
612
613
614
615
607
573738.259
573738.259
573731.316
573731.316
573720.872
573657.163
573657.163
573649.394
573649.394
573666.923
573666.924
573683.890
573683.892
157848.460
157888.375
157926.107
157951.824
157970.076
157828.822
157881.879
157881.879
157909.247
157909.244
157954.116
157954.116
157970.076
16.000
16.000
16.000
16.000
16.000
16.000
16.000
16.000
16.000
16.000
16.000
16.000
16.000
1.683
1.806
1.925
2.005
2.070
1.500
1.717
1.824
1.909
1.964
2.103
2.156
2.281
1350
1350
1350
1350
1350
1200
1200
1350
1350
1350
1350
1350
1350
1
0
1
0
1
0
1
0
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
2
0
1
01
01
01
01
0
01
01
01
01
01
01
012
0
5.001
5.0025.002
5.0035.003
5.0045.004
5.0055.005
5.006
7.0007.000
7.0017.001
7.0027.002
7.0037.003
7.0047.004
7.0057.005
7.0067.0065.006
5.007
14.392
14.31714.194
14.19414.075
14.07513.995
13.99513.930
13.930
14.50014.283
14.28314.251
14.17614.091
14.09114.036
14.03613.897
13.89713.844
13.84413.79413.794
13.719
300
375375
375375
375375
375375
375
300300
300300
375375
375375
375375
375375
375375375
450
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Ground/Roof WaterSam Raven06/03/2020
Page 8
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
503
504
121
122
573675.104
573583.946
573957.338
573943.346
157982.815
157981.007
157925.666
157973.902
19.300
13.000
16.900
17.000
6.773
2.000
0.900
2.300
2100
2100
1500
1500
1
20
1
0
1
0
12
01
01
0
5.0071.008
1.0091.009
4.0004.000
4.001
13.27712.527
12.52711.000
16.00014.700
14.700
4501200
12001200
500500
500
Simula on Se ngs
Rainfall MethodologySummer CV
Winter CVAnalysis Speed
FEH-130.7500.840Detailed
Skip Steady StateDrain Down Time (mins)
Addi onal Storage (m³/ha)Check Discharge Rate(s)
✓150020.0✓
Check Discharge Volume100 year 360 minute (m³)
✓
Storm Dura ons15 30 60 120 180 240 360 480 600 720 960 1440
Return Period(years)
Climate Change(CC %)
Addi onal Area(A %)
Addi onal Flow(Q %)
230
100
00
40
000
000
Pre-development Discharge Rate
Site MakeupGreen eld Method
Posi vely Drained Area (ha)SAAR (mm)
Soil IndexSPR
RegionGrowth Factor 1 year
Green eldIH124
10.1010.85
Growth Factor 30 yearGrowth Factor 100 year
Be erment (%)QBar
Q 1 year (l/s)Q 30 year (l/s)
Q 100 year (l/s)
1.952.480
Pre-development Discharge Volume
Site MakeupGreen eld Method
Posi vely Drained Area (ha)Soil Index
SPRCWI
Green eldFSR/FEH
10.10
Return Period (years)Climate Change (%)
Storm Dura on (mins)Be erment (%)
PRRuno Volume (m³)
10003600
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Ground/Roof WaterSam Raven06/03/2020
Page 9
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Other (defaults)
Entry Loss (manhole)Exit Loss (manhole)
0.2500.250
Entry Loss (junc on)Exit Loss (junc on)
0.0000.000
Apply Recommended LossesFlood Risk (m)
x0.300
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Ground/Roof WaterSam Raven06/03/2020
Page 10
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 2 year Cri cal Storm Dura on. Lowest mass balance: 99.14%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 6 10 19.191 0.091 38.2 0.3909 0.0000 OK
15 minute winter 6 1.000 6.1 37.2 2.506 0.334 0.8596
15 minute winter 6.1 10 16.335 0.085 41.8 0.1535 0.0000 OK
15 minute winter 6.1 1.001 7 41.7 1.853 0.065 0.1606
15 minute winter 7 10 16.070 0.095 63.5 0.2706 0.0000 OK
15 minute winter 7 1.002 5 62.8 1.753 0.100 1.3976
15 minute winter 5 10 14.708 0.158 106.5 0.9177 0.0000 OK
15 minute winter 5 1.003 4 106.1 2.022 0.259 3.0685
15 minute winter 1 10 17.234 0.074 36.7 0.2059 0.0000 OK
15 minute winter 1 2.000 1.1 36.3 1.490 0.087 1.4181
15 minute winter 1.1 10 14.834 0.134 39.0 0.2168 0.0000 OK
15 minute winter 1.1 2.001 2 38.7 1.190 0.210 0.1926
15 minute winter 2 10 14.769 0.149 62.8 0.4566 0.0000 OK
15 minute winter 2 2.002 2.1 62.0 1.428 0.316 1.6877
15 minute winter 2.1 11 14.417 0.167 64.8 0.2787 0.0000 OK
15 minute winter 2.1 2.003 3 64.8 1.031 0.422 3.1820
15 minute winter 3 11 14.199 0.249 134.3 1.7788 0.0000 OK
15 minute winter 3 2.004 4 131.5 1.176 0.615 10.0751
15 minute winter 4 11 13.899 0.349 240.2 0.4511 0.0000 OK
15 minute winter 4 1.004 In 236.4 1.504 0.574 4.3571
15 minute winter In 12 13.758 0.308 238.7 0.3896 0.0000 OK
15 minute winter In 1.005 125 240.0 1.799 0.427 1.9982
15 minute winter 25.4 10 14.280 0.080 15.2 0.2366 0.0000 OK
15 minute winter 25.4 3.000 25.1 14.8 0.732 0.069 1.1717
15 minute winter 25.1 11 14.047 0.092 14.8 0.1320 0.0000 OK
15 minute winter 25.1 3.001 25.2 14.4 0.654 0.090 1.0741
15 minute winter 25.2 13 13.923 0.088 14.4 0.1255 0.0000 OK
15 minute winter 25.2 3.002 25.3 13.9 0.750 0.081 0.9528
15 minute winter 25.3 14 13.761 0.071 13.9 0.0806 0.0000 OK
15 minute winter 25.3 3.003 125 13.5 0.860 0.052 0.3438
15 minute winter 125 12 13.069 0.319 251.3 1.1288 0.0000 OK
15 minute winter 125 1.006 501 248.4 0.910 0.120 11.7539
15 minute winter 123 12 13.967 0.117 46.5 0.2284 0.0000 OK
15 minute winter 123 4.002 501 44.8 1.313 0.118 2.1810
15 minute winter 501 13 13.029 0.383 299.8 1.3763 0.0000 OK
15 minute winter 501 1.007 502 296.9 1.031 0.225 13.1003
15 minute winter 502 13 12.945 0.344 309.3 1.3224 0.0000 OK
15 minute winter 502 1.008 503 308.7 1.529 0.232 15.2843
15 minute winter 600 10 14.587 0.087 12.2 0.1971 0.0000 OK
15 minute winter 600 5.000 601 12.0 0.702 0.169 0.3355
15 minute winter 601 11 14.508 0.089 12.0 0.1009 0.0000 OK
15 minute winter 601 5.001 602 11.9 0.721 0.167 0.1077
15 minute winter 602 10 14.458 0.141 32.4 0.4462 0.0000 OK
15 minute winter 602 5.002 603 32.0 0.850 0.290 1.5150
15 minute winter 603 11 14.335 0.141 32.0 0.2024 0.0000 OK
15 minute winter 603 5.003 604 31.7 0.840 0.286 1.4632
15 minute winter 604 12 14.219 0.144 31.7 0.2060 0.0000 OK
15 minute winter 604 5.004 605 31.4 0.740 0.283 1.1035
15 minute winter 605 12 14.161 0.166 39.4 0.3494 0.0000 OK
15 minute winter 605 5.005 606 39.1 0.831 0.353 0.9880
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Ground/Roof WaterSam Raven06/03/2020
Page 11
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 2 year Cri cal Storm Dura on. Lowest mass balance: 99.14%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 606 12 14.096 0.166 47.0 0.3468 0.0000 OK
15 minute winter 606 5.006 607 45.6 1.026 0.378 1.6591
15 minute winter 609 10 14.635 0.135 29.3 0.5236 0.0000 OK
15 minute winter 609 7.000 610 28.6 0.907 0.405 1.6915
15 minute winter 610 11 14.428 0.145 28.6 0.1636 0.0000 OK
15 minute winter 610 7.001 611 28.6 0.912 0.403 0.2436
15 minute winter 611 11 14.343 0.167 41.1 0.4088 0.0000 OK
15 minute winter 611 7.002 612 41.0 0.858 0.370 1.3081
15 minute winter 612 12 14.261 0.170 41.0 0.2430 0.0000 OK
15 minute winter 612 7.003 613 40.6 0.847 0.364 0.8422
15 minute winter 613 12 14.204 0.168 44.5 0.2945 0.0000 OK
15 minute winter 613 7.004 614 44.5 0.833 0.402 2.4004
15 minute winter 614 12 14.096 0.199 53.1 0.4247 0.0000 OK
15 minute winter 614 7.005 615 52.3 0.903 0.470 0.9821
15 minute winter 615 12 14.035 0.191 53.6 0.2949 0.0000 OK
15 minute winter 615 7.006 607 53.0 1.024 0.476 0.8266
15 minute winter 607 13 13.861 0.142 98.6 0.2037 0.0000 OK
15 minute winter 607 5.007 503 99.1 2.481 0.181 0.6185
15 minute winter 503 13 12.753 0.226 420.5 0.8856 0.0000 OK
15 minute winter 503 1.009 504 415.7 2.943 0.076 12.9170 221.2
15 minute winter 504 14 11.216 0.216 415.7 0.0000 0.0000 OK15 minute winter 121 10 16.044 0.044 11.4 0.1557 0.0000 OK
15 minute winter 121 4.000 122 11.1 0.718 0.016 0.8175
15 minute winter 122 11 14.791 0.091 33.0 0.2833 0.0000 OK
15 minute winter 122 4.001 123 31.9 1.112 0.075 2.5229
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Ground/Roof WaterSam Raven06/03/2020
Page 12
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 30 year Cri cal Storm Dura on. Lowest mass balance: 99.14%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 6 10 19.270 0.170 99.4 0.7269 0.0000 OK
15 minute winter 6 1.000 6.1 97.0 3.109 0.871 1.8095
15 minute winter 6.1 10 16.400 0.150 108.9 0.2699 0.0000 OK
15 minute winter 6.1 1.001 7 108.6 2.310 0.171 0.3359
15 minute winter 7 10 16.130 0.155 165.3 0.4413 0.0000 OK
15 minute winter 7 1.002 5 164.2 2.222 0.261 2.8499
15 minute winter 5 11 14.828 0.278 278.1 1.6181 0.0000 OK
15 minute winter 5 1.003 4 271.8 2.116 0.663 6.9365
15 minute winter 1 10 17.280 0.120 95.7 0.3346 0.0000 OK
15 minute winter 1 2.000 1.1 94.9 1.745 0.228 4.0316
15 minute winter 1.1 12 15.606 0.906 101.9 1.4685 0.0000 SURCHARGED
15 minute winter 1.1 2.001 2 87.1 1.216 0.473 0.6500
15 minute winter 2 12 15.583 0.963 145.4 2.9437 0.0000 SURCHARGED
15 minute winter 2 2.002 2.1 147.6 1.630 0.753 4.2548
15 minute winter 2.1 12 15.393 1.143 154.6 1.9057 0.0000 SURCHARGED
15 minute winter 2.1 2.003 3 144.0 1.305 0.938 5.6025
15 minute winter 3 12 15.134 1.184 296.4 8.4478 0.0000 SURCHARGED
15 minute winter 3 2.004 4 286.3 1.807 1.339 14.3878
15 minute winter 4 12 14.317 0.767 555.4 0.9926 0.0000 SURCHARGED
15 minute winter 4 1.004 In 555.3 1.972 1.347 7.7985
15 minute winter In 12 14.047 0.597 560.7 0.7542 0.0000 OK
15 minute winter In 1.005 125 560.0 2.146 0.997 3.8719
15 minute winter 25.4 10 14.331 0.131 39.7 0.3882 0.0000 OK
15 minute winter 25.4 3.000 25.1 39.1 0.933 0.183 2.3731
15 minute winter 25.1 11 14.109 0.154 39.1 0.2205 0.0000 OK
15 minute winter 25.1 3.001 25.2 38.6 0.849 0.241 2.2040
15 minute winter 25.2 12 13.980 0.145 38.6 0.2075 0.0000 OK
15 minute winter 25.2 3.002 25.3 37.5 0.977 0.218 1.9622
15 minute winter 25.3 13 13.811 0.121 37.5 0.1372 0.0000 OK
15 minute winter 25.3 3.003 125 37.6 1.140 0.146 0.7235
15 minute winter 125 12 13.307 0.557 595.5 1.9679 0.0000 OK
15 minute winter 125 1.006 501 590.9 1.086 0.285 23.3878
15 minute winter 123 11 14.050 0.200 123.4 0.3904 0.0000 OK
15 minute winter 123 4.002 501 121.0 1.720 0.320 4.5142
15 minute winter 501 12 13.257 0.611 730.1 2.1973 0.0000 OK
15 minute winter 501 1.007 502 723.9 1.370 0.548 24.2299
15 minute winter 502 12 13.139 0.538 760.7 2.0644 0.0000 OK
15 minute winter 502 1.008 503 770.3 1.986 0.580 28.9106
15 minute winter 600 10 14.652 0.152 31.9 0.3464 0.0000 OK
15 minute winter 600 5.000 601 31.3 0.811 0.441 0.7699
15 minute winter 601 11 14.596 0.177 31.3 0.2000 0.0000 OK
15 minute winter 601 5.001 602 31.0 0.795 0.434 0.2852
15 minute winter 602 11 14.574 0.257 84.1 0.8095 0.0000 OK
15 minute winter 602 5.002 603 82.8 1.045 0.750 3.2221
15 minute winter 603 12 14.453 0.259 82.8 0.3711 0.0000 OK
15 minute winter 603 5.003 604 81.5 0.983 0.735 3.3273
15 minute winter 604 12 14.367 0.292 81.5 0.4181 0.0000 OK
15 minute winter 604 5.004 605 79.0 0.835 0.712 2.4845
15 minute winter 605 12 14.318 0.323 100.7 0.6823 0.0000 OK
15 minute winter 605 5.005 606 99.5 0.998 0.900 2.1005
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Ground/Roof WaterSam Raven06/03/2020
Page 13
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 30 year Cri cal Storm Dura on. Lowest mass balance: 99.14%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 606 12 14.244 0.314 121.2 0.6565 0.0000 OK
15 minute winter 606 5.006 607 119.0 1.330 0.986 3.2969
15 minute winter 609 11 14.784 0.284 76.4 1.1020 0.0000 OK
15 minute winter 609 7.000 610 72.4 1.092 1.023 3.6916
15 minute winter 610 12 14.610 0.327 72.4 0.3702 0.0000 SURCHARGED
15 minute winter 610 7.001 611 70.6 1.082 0.994 0.5471
15 minute winter 611 12 14.559 0.383 103.4 0.9378 0.0000 SURCHARGED
15 minute winter 611 7.002 612 99.6 1.012 0.898 3.0186
15 minute winter 612 12 14.479 0.388 99.6 0.5545 0.0000 SURCHARGED
15 minute winter 612 7.003 613 94.6 0.966 0.849 1.9334
15 minute winter 613 12 14.422 0.386 105.1 0.6784 0.0000 SURCHARGED
15 minute winter 613 7.004 614 105.0 0.958 0.948 4.9493
15 minute winter 614 12 14.287 0.390 126.6 0.8325 0.0000 SURCHARGED
15 minute winter 614 7.005 615 126.8 1.156 1.140 1.8365
15 minute winter 615 12 14.189 0.345 130.7 0.5328 0.0000 OK
15 minute winter 615 7.006 607 130.2 1.353 1.169 1.5153
15 minute winter 607 12 13.970 0.251 249.2 0.3592 0.0000 OK
15 minute winter 607 5.007 503 248.5 3.052 0.454 1.2604
15 minute winter 503 13 12.896 0.369 1052.1 1.4472 0.0000 OK
15 minute winter 503 1.009 504 1056.0 3.774 0.193 25.5134 578.0
15 minute winter 504 13 11.344 0.344 1056.0 0.0000 0.0000 OK15 minute winter 121 10 16.069 0.069 29.7 0.2458 0.0000 OK
15 minute winter 121 4.000 122 29.3 0.940 0.043 1.6163
15 minute winter 122 11 14.848 0.148 86.3 0.4587 0.0000 OK
15 minute winter 122 4.001 123 83.7 1.418 0.197 5.1845
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Ground/Roof WaterSam Raven06/03/2020
Page 14
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year +40% CC Cri cal Storm Dura on. Lowest mass balance: 99.14%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 6 11 20.800 1.700 179.0 7.2828 2.3961 FLOOD
15 minute winter 6 1.000 6.1 134.3 3.377 1.206 2.3003
15 minute winter 6.1 11 16.444 0.194 154.4 0.3499 0.0000 OK
15 minute winter 6.1 1.001 7 154.2 2.521 0.242 0.5896
15 minute winter 7 11 16.247 0.272 252.3 0.7754 0.0000 OK
15 minute winter 7 1.002 5 246.6 2.162 0.392 4.8967
15 minute winter 5 11 15.939 1.389 445.8 8.0774 0.0000 FLOOD RISK
15 minute winter 5 1.003 4 428.9 2.707 1.046 8.4118
15 minute winter 1 10 17.376 0.216 172.3 0.5993 0.0000 OK
15 minute winter 1 2.000 1.1 167.0 1.816 0.401 5.0362
15 minute winter 1.1 10 16.700 2.000 179.7 3.2420 6.5060 FLOOD
15 minute winter 1.1 2.001 2 151.5 1.374 0.822 0.6500
15 minute winter 2 10 16.638 2.018 239.7 6.1667 0.0000 FLOOD RISK
15 minute winter 2 2.002 2.1 240.2 2.178 1.226 4.2548
15 minute winter 2.1 9 15.950 1.700 253.6 2.8339 33.0894 FLOOD
15 minute winter 2.1 2.003 3 164.7 1.494 1.074 5.6025
15 minute winter 3 9 15.735 1.785 459.3 12.7342 26.7351 FLOOD
15 minute winter 3 2.004 4 335.1 2.115 1.567 14.3878
15 minute winter 4 11 14.795 1.245 751.0 1.6114 0.0000 SURCHARGED
15 minute winter 4 1.004 In 750.6 2.665 1.821 7.8027
15 minute winter In 11 14.286 0.836 761.3 1.0561 0.0000 SURCHARGED
15 minute winter In 1.005 125 761.0 2.703 1.354 4.1298
15 minute winter 25.4 10 14.381 0.181 71.5 0.5371 0.0000 OK
15 minute winter 25.4 3.000 25.1 70.5 1.073 0.330 3.6890
15 minute winter 25.1 11 14.170 0.215 70.5 0.3073 0.0000 OK
15 minute winter 25.1 3.001 25.2 69.9 0.985 0.436 3.4205
15 minute winter 25.2 12 14.035 0.200 69.9 0.2866 0.0000 OK
15 minute winter 25.2 3.002 25.3 68.2 1.132 0.397 3.0670
15 minute winter 25.3 13 13.857 0.167 68.2 0.1893 0.0000 OK
15 minute winter 25.3 3.003 125 68.2 1.336 0.264 1.1190
15 minute winter 125 12 13.465 0.715 825.4 2.5281 0.0000 OK
15 minute winter 125 1.006 501 821.2 1.146 0.396 31.4503
15 minute winter 123 11 14.137 0.287 224.8 0.5608 0.0000 OK
15 minute winter 123 4.002 501 221.6 1.995 0.585 7.1307
15 minute winter 501 12 13.415 0.769 1074.0 2.7656 0.0000 OK
15 minute winter 501 1.007 502 1069.2 1.530 0.809 32.1014
15 minute winter 502 12 13.273 0.672 1150.7 2.5784 0.0000 OK
15 minute winter 502 1.008 503 1148.6 2.199 0.864 39.4923
15 minute winter 600 12 15.374 0.874 57.5 1.9913 0.0000 SURCHARGED
15 minute winter 600 5.000 601 48.0 0.830 0.675 1.3829
15 minute winter 601 12 15.322 0.903 48.0 1.0209 0.0000 SURCHARGED
15 minute winter 601 5.001 602 48.2 0.760 0.676 0.4575
15 minute winter 602 12 15.301 0.984 136.3 3.1056 0.0000 SURCHARGED
15 minute winter 602 5.002 603 128.5 1.165 1.163 4.4025
15 minute winter 603 12 15.111 0.917 128.5 1.3127 0.0000 SURCHARGED
15 minute winter 603 5.003 604 127.7 1.158 1.153 4.2315
15 minute winter 604 12 14.914 0.839 127.7 1.1999 0.0000 SURCHARGED
15 minute winter 604 5.004 605 128.9 1.169 1.162 2.8365
15 minute winter 605 11 14.765 0.770 165.5 1.6246 0.0000 SURCHARGED
15 minute winter 605 5.005 606 164.4 1.490 1.486 2.3194
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Ground/Roof WaterSam Raven06/03/2020
Page 15
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year +40% CC Cri cal Storm Dura on. Lowest mass balance: 99.14%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 606 11 14.564 0.634 205.0 1.3237 0.0000 SURCHARGED
15 minute winter 606 5.006 607 202.4 1.841 1.675 3.9207
15 minute winter 609 10 16.000 1.500 137.5 5.8170 4.9859 FLOOD
15 minute winter 609 7.000 610 105.1 1.493 1.486 3.7362
15 minute winter 610 11 15.571 1.288 105.1 1.4571 0.0000 SURCHARGED
15 minute winter 610 7.001 611 101.5 1.441 1.429 0.5471
15 minute winter 611 11 15.471 1.295 160.3 3.1744 0.0000 SURCHARGED
15 minute winter 611 7.002 612 150.1 1.361 1.354 3.0186
15 minute winter 612 11 15.267 1.176 150.1 1.6830 0.0000 SURCHARGED
15 minute winter 612 7.003 613 150.5 1.365 1.350 1.9334
15 minute winter 613 11 15.120 1.084 169.4 1.9048 0.0000 SURCHARGED
15 minute winter 613 7.004 614 170.4 1.545 1.539 4.9493
15 minute winter 614 11 14.732 0.835 215.0 1.7832 0.0000 SURCHARGED
15 minute winter 614 7.005 615 214.4 1.944 1.928 1.8713
15 minute winter 615 11 14.436 0.592 221.9 0.9129 0.0000 SURCHARGED
15 minute winter 615 7.006 607 221.5 2.010 1.989 1.7119
15 minute winter 607 12 14.098 0.379 422.5 0.5416 0.0000 OK
15 minute winter 607 5.007 503 424.4 3.356 0.775 1.9403
15 minute winter 503 12 13.006 0.479 1654.4 1.8802 0.0000 OK
15 minute winter 503 1.009 504 1649.3 4.220 0.301 35.8558 971.7
15 minute winter 504 12 11.433 0.433 1649.3 0.0000 0.0000 OK15 minute winter 121 10 16.092 0.092 53.4 0.3273 0.0000 OK
15 minute winter 121 4.000 122 52.8 1.090 0.077 2.5032
15 minute winter 122 10 14.904 0.204 155.6 0.6329 0.0000 OK
15 minute winter 122 4.001 123 152.0 1.629 0.358 8.1315
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Southern Ground Water NetworkSam Raven06/03/2020
Page 1
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Design Se ngs
Rainfall MethodologyReturn Period (years)
Addi onal Flow (%)FSR Region
M5-60 (mm)Ra o-R
CVTime of Entry (mins)
FSR10England and Wales20.0000.4000.7505.00
Maximum Time of Concentra on (mins)Maximum Rainfall (mm/hr)
Minimum Velocity (m/s)Connec on Type
Minimum Backdrop Height (m)Preferred Cover Depth (m)
Include Intermediate GroundEnforce best prac ce design rules
30.0050.01.00Level So ts0.2001.200✓✓
Nodes
Name Area(ha)
T of E(mins)
CoverLevel(m)
Diameter(mm)
Eas ng(m)
Northing(m)
Depth(m)
400401402403404405406407408409410411412413
0.0420.0450.0890.1120.0530.0580.1270.1130.0950.1000.0690.1230.105
5.005.005.005.005.005.005.005.005.005.005.005.005.00
23.75021.00021.30021.20020.80021.20018.90018.80018.80018.75018.70018.80019.00013.000
13501350150015001500150015001500150015001500150015001500
573998.353573954.621573910.739573829.585573748.430573734.709573733.806573727.290573661.078573594.867573528.655573501.422573499.699573497.976
157731.541157712.624157694.337157694.454157694.570157708.104157753.397157759.866157759.876157759.886157759.886157786.829157865.150157943.471
1.6421.6462.1382.2032.3443.2041.7961.7961.9101.9742.0382.2042.5602.000
Links
Name USNode
DSNode
Length(m)
ks (mm) /n
US IL(m)
DS IL(m)
Fall(m)
Slope(1:X)
Dia(mm)
T of C(mins)
Rain(mm/hr)
Name Vel(m/s)
Cap(l/s)
Flow(l/s)
USDepth
(m)
DSDepth
(m)
Σ Area(ha)
Σ AddIn ow
(l/s)
ProDepth(mm)
ProVelocity
(m/s)
1.000 400 401 47.648 0.600 22.108 19.354 2.754 17.3 450 5.16 50.0
1.000 4.905 780.1 5.7 1.192 1.196 0.042 0.0 27 1.464
1.001 401 402 47.540 0.600 19.354 19.237 0.117 406.3 450 5.95 50.0
1.001 1.002 159.4 11.8 1.196 1.613 0.087 0.0 82 0.595
1.002 402 403 81.154 0.600 19.162 18.997 0.165 491.8 525 7.30 45.8
1.002 1.003 217.1 21.8 1.613 1.678 0.176 0.0 112 0.651
1.003 403 404 81.155 0.600 18.997 18.456 0.541 150.0 525 8.04 43.5
1.003 1.826 395.3 34.0 1.678 1.819 0.288 0.0 103 1.135
1.004 404 405 19.273 0.600 18.456 18.071 0.385 50.1 525 8.14 43.3
1.004 3.171 686.4 40.0 1.819 2.604 0.341 0.0 85 1.766
1.005 405 406 45.302 0.600 17.996 17.104 0.892 50.8 600 8.36 42.6
1.005 3.422 967.5 46.1 2.604 1.196 0.399 0.0 88 1.799
1.006 406 407 9.182 0.600 17.104 17.004 0.100 91.8 600 8.42 42.5
1.006 2.542 718.6 60.6 1.196 1.196 0.526 0.0 116 1.575
1.007 407 408 66.212 0.600 17.004 16.890 0.114 580.8 600 9.52 39.8
1.007 1.003 283.6 68.9 1.196 1.310 0.639 0.0 201 0.834
1.008 408 409 66.211 0.600 16.890 16.776 0.114 580.8 600 10.62 37.6
1.008 1.003 283.6 74.8 1.310 1.374 0.734 0.0 209 0.852
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Southern Ground Water NetworkSam Raven06/03/2020
Page 2
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Links
Name USNode
DSNode
Length(m)
ks (mm) /n
US IL(m)
DS IL(m)
Fall(m)
Slope(1:X)
Dia(mm)
T of C(mins)
Rain(mm/hr)
Name Vel(m/s)
Cap(l/s)
Flow(l/s)
USDepth
(m)
DSDepth
(m)
Σ Area(ha)
Σ AddIn ow
(l/s)
ProDepth(mm)
ProVelocity
(m/s)
1.009 409 410 66.212 0.600 16.776 16.662 0.114 580.8 600 11.72 35.6
1.009 1.003 283.6 80.5 1.374 1.438 0.834 0.0 218 0.868
1.010 410 411 38.309 0.600 16.662 16.596 0.066 580.4 600 12.36 34.6
1.010 1.003 283.7 84.7 1.438 1.604 0.903 0.0 224 0.881
1.011 411 412 78.340 0.600 16.596 16.440 0.156 502.2 600 13.57 32.8
1.011 1.080 305.2 91.2 1.604 1.960 1.026 0.0 224 0.948
1.012 412 413 78.340 0.600 16.440 11.000 5.440 14.4 600 13.77 32.6
1.012 6.438 1820.2 99.9 1.960 1.400 1.131 0.0 94 3.535
Pipeline Schedule
Link Length(m)
Slope(1:X)
Dia(mm)
LinkType
US CL(m)
US IL(m)
US Depth(m)
DS CL(m)
DS IL(m)
DS Depth(m)
Link USNode
Dia(mm)
NodeType
MHType
DSNode
Dia(mm)
NodeType
MHType
1.000 47.648 17.3 450 Circular_Default Sewer Type 23.750 22.108 1.192 21.000 19.354 1.196
1.000 400 1350 Manhole Adoptable 401 1350 Manhole Adoptable
1.001 47.540 406.3 450 Circular_Default Sewer Type 21.000 19.354 1.196 21.300 19.237 1.613
1.001 401 1350 Manhole Adoptable 402 1500 Manhole Adoptable
1.002 81.154 491.8 525 Circular_Default Sewer Type 21.300 19.162 1.613 21.200 18.997 1.678
1.002 402 1500 Manhole Adoptable 403 1500 Manhole Adoptable
1.003 81.155 150.0 525 Circular_Default Sewer Type 21.200 18.997 1.678 20.800 18.456 1.819
1.003 403 1500 Manhole Adoptable 404 1500 Manhole Adoptable
1.004 19.273 50.1 525 Circular_Default Sewer Type 20.800 18.456 1.819 21.200 18.071 2.604
1.004 404 1500 Manhole Adoptable 405 1500 Manhole Adoptable
1.005 45.302 50.8 600 Circular_Default Sewer Type 21.200 17.996 2.604 18.900 17.104 1.196
1.005 405 1500 Manhole Adoptable 406 1500 Manhole Adoptable
1.006 9.182 91.8 600 Circular_Default Sewer Type 18.900 17.104 1.196 18.800 17.004 1.196
1.006 406 1500 Manhole Adoptable 407 1500 Manhole Adoptable
1.007 66.212 580.8 600 Circular_Default Sewer Type 18.800 17.004 1.196 18.800 16.890 1.310
1.007 407 1500 Manhole Adoptable 408 1500 Manhole Adoptable
1.008 66.211 580.8 600 Circular_Default Sewer Type 18.800 16.890 1.310 18.750 16.776 1.374
1.008 408 1500 Manhole Adoptable 409 1500 Manhole Adoptable
1.009 66.212 580.8 600 Circular_Default Sewer Type 18.750 16.776 1.374 18.700 16.662 1.438
1.009 409 1500 Manhole Adoptable 410 1500 Manhole Adoptable
1.010 38.309 580.4 600 Circular_Default Sewer Type 18.700 16.662 1.438 18.800 16.596 1.604
1.010 410 1500 Manhole Adoptable 411 1500 Manhole Adoptable
1.011 78.340 502.2 600 Circular_Default Sewer Type 18.800 16.596 1.604 19.000 16.440 1.960
1.011 411 1500 Manhole Adoptable 412 1500 Manhole Adoptable
1.012 78.340 14.4 600 Circular_Default Sewer Type 19.000 16.440 1.960 13.000 11.000 1.400
1.012 412 1500 Manhole Adoptable 413 1500 Manhole Adoptable
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Southern Ground Water NetworkSam Raven06/03/2020
Page 3
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
400
401
402
403
404
405
406
407
408
409
410
411
412
573998.353
573954.621
573910.739
573829.585
573748.430
573734.709
573733.806
573727.290
573661.078
573594.867
573528.655
573501.422
573499.699
157731.541
157712.624
157694.337
157694.454
157694.570
157708.104
157753.397
157759.866
157759.876
157759.886
157759.886
157786.829
157865.150
23.750
21.000
21.300
21.200
20.800
21.200
18.900
18.800
18.800
18.750
18.700
18.800
19.000
1.642
1.646
2.138
2.203
2.344
3.204
1.796
1.796
1.910
1.974
2.038
2.204
2.560
1350
1350
1500
1500
1500
1500
1500
1500
1500
1500
1500
1500
1500
0
1
0
10
10
1
0
1
0
1
0
1
0
10
10
1
0
1
0
1
0
01
01
01
01
01
01
01
01
01
01
01
01
0
1.0001.000
1.0011.001
1.0021.002
1.0031.003
1.0041.004
1.0051.005
1.0061.006
1.0071.007
1.0081.008
1.0091.009
1.0101.010
1.0111.011
1.012
22.10819.354
19.35419.237
19.16218.997
18.99718.456
18.45618.071
17.99617.104
17.10417.004
17.00416.890
16.89016.776
16.77616.662
16.66216.596
16.59616.440
16.440
450450
450450
525525
525525
525525
600600
600600
600600
600600
600600
600600
600600
600
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Southern Ground Water NetworkSam Raven06/03/2020
Page 4
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Manhole Schedule
Node Eas ng(m)
Northing(m)
CL(m)
Depth(m)
Dia(mm)
Connec ons Link IL(m)
Dia(mm)
413 573497.976 157943.471 13.000 2.000 1500
1
1 1.012 11.000 600
Simula on Se ngs
Rainfall MethodologySummer CV
Winter CVAnalysis Speed
FEH-130.7500.840Detailed
Skip Steady StateDrain Down Time (mins)
Addi onal Storage (m³/ha)Check Discharge Rate(s)
✓150020.0✓
Check Discharge Volume100 year 360 minute (m³)
✓
Storm Dura ons15 30 60 120 180 240 360 480 600 720 960 1440
Return Period(years)
Climate Change(CC %)
Addi onal Area(A %)
Addi onal Flow(Q %)
230
100
00
40
000
000
Pre-development Discharge Rate
Site MakeupGreen eld Method
Posi vely Drained Area (ha)SAAR (mm)
Soil IndexSPR
RegionGrowth Factor 1 year
Green eldIH124
10.1010.85
Growth Factor 30 yearGrowth Factor 100 year
Be erment (%)QBar
Q 1 year (l/s)Q 30 year (l/s)
Q 100 year (l/s)
1.952.480
Pre-development Discharge Volume
Site MakeupGreen eld Method
Posi vely Drained Area (ha)Soil Index
SPRCWI
Green eldFSR/FEH
10.10
Return Period (years)Climate Change (%)
Storm Dura on (mins)Be erment (%)
PRRuno Volume (m³)
10003600
Other (defaults)
Entry Loss (manhole)Exit Loss (manhole)
0.2500.250
Entry Loss (junc on)Exit Loss (junc on)
0.0000.000
Apply Recommended LossesFlood Risk (m)
x0.300
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Southern Ground Water NetworkSam Raven06/03/2020
Page 5
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 2 year Cri cal Storm Dura on. Lowest mass balance: 99.20%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 400 10 22.136 0.028 6.0 0.0540 0.0000 OK
15 minute winter 400 1.000 401 5.9 0.612 0.008 0.5578
15 minute winter 401 11 19.435 0.081 12.3 0.1611 0.0000 OK
15 minute winter 401 1.001 402 11.0 0.625 0.069 0.8342
15 minute winter 402 11 19.276 0.114 22.6 0.2959 0.0000 OK
15 minute winter 402 1.002 403 22.1 0.668 0.102 2.6820
15 minute winter 403 12 19.105 0.108 36.7 0.3011 0.0000 OK
15 minute winter 403 1.003 404 35.4 1.247 0.090 2.3093
15 minute winter 404 12 18.547 0.091 41.3 0.2018 0.0000 OK
15 minute winter 404 1.004 405 41.2 1.722 0.060 0.4611
15 minute winter 405 12 18.085 0.089 47.7 0.1893 0.0000 OK
15 minute winter 405 1.005 406 47.7 1.256 0.049 1.7482
15 minute winter 406 12 17.247 0.143 62.1 0.4539 0.0000 OK
15 minute winter 406 1.006 407 62.2 0.887 0.087 0.6491
15 minute winter 407 12 17.218 0.214 74.8 0.6476 0.0000 OK
15 minute winter 407 1.007 408 75.1 0.807 0.265 6.1658
15 minute winter 408 13 17.117 0.227 85.7 0.6262 0.0000 OK
15 minute winter 408 1.008 409 83.2 0.832 0.293 6.6196
15 minute winter 409 13 17.011 0.235 91.8 0.6544 0.0000 OK
15 minute winter 409 1.009 410 89.1 0.849 0.314 6.9716
15 minute winter 410 14 16.907 0.245 93.6 0.5986 0.0000 OK
15 minute winter 410 1.010 411 91.7 0.884 0.323 3.9777
15 minute winter 411 15 16.827 0.231 98.7 0.6648 0.0000 OK
15 minute winter 411 1.011 412 98.0 1.577 0.321 5.0530
15 minute winter 412 15 16.537 0.097 102.1 0.2501 0.0000 OK
15 minute winter 412 1.012 413 102.6 3.548 0.056 2.2656 74.2
15 minute winter 413 15 11.095 0.095 102.6 0.0000 0.0000 OK
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Southern Ground Water NetworkSam Raven06/03/2020
Page 6
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 30 year Cri cal Storm Dura on. Lowest mass balance: 99.20%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 400 10 22.151 0.043 15.6 0.0845 0.0000 OK
15 minute winter 400 1.000 401 15.4 0.747 0.020 1.1439
15 minute winter 401 11 19.490 0.136 32.1 0.2694 0.0000 OK
15 minute winter 401 1.001 402 30.3 0.826 0.190 1.7531
15 minute winter 402 11 19.356 0.194 61.4 0.5035 0.0000 OK
15 minute winter 402 1.002 403 60.6 0.880 0.279 5.6332
15 minute winter 403 11 19.179 0.182 99.7 0.5076 0.0000 OK
15 minute winter 403 1.003 404 97.1 1.623 0.246 4.8831
15 minute winter 404 12 18.613 0.157 115.3 0.3488 0.0000 OK
15 minute winter 404 1.004 405 114.5 2.259 0.167 0.9780
15 minute winter 405 12 18.143 0.147 132.2 0.3124 0.0000 OK
15 minute winter 405 1.005 406 132.1 1.348 0.137 4.6124
15 minute winter 406 12 17.420 0.316 175.2 1.0047 0.0000 OK
15 minute winter 406 1.006 407 169.9 0.988 0.236 1.6197
15 minute winter 407 12 17.409 0.405 207.3 1.2255 0.0000 OK
15 minute winter 407 1.007 408 202.6 0.993 0.715 13.8548
15 minute winter 408 13 17.322 0.432 230.4 1.1927 0.0000 OK
15 minute winter 408 1.008 409 220.9 1.015 0.779 14.7347
15 minute winter 409 13 17.228 0.452 249.8 1.2576 0.0000 OK
15 minute winter 409 1.009 410 239.8 1.055 0.846 15.0528
15 minute winter 410 13 17.112 0.450 254.6 1.0998 0.0000 OK
15 minute winter 410 1.010 411 251.6 1.188 0.887 8.1778
15 minute winter 411 13 16.997 0.401 277.7 1.1565 0.0000 OK
15 minute winter 411 1.011 412 276.0 2.130 0.904 10.3312
15 minute winter 412 13 16.606 0.166 298.0 0.4301 0.0000 OK
15 minute winter 412 1.012 413 296.5 4.782 0.163 4.8569 193.4
15 minute winter 413 13 11.160 0.160 296.5 0.0000 0.0000 OK
Idom Merebrook Ltd File: Combined Networks FEH.pfdNetwork: Southern Ground Water NetworkSam Raven06/03/2020
Page 7
Flow+ v9.1 Copyright © 1988-2020 Causeway So ware Solu ons Limited
Results for 100 year +40% CC Cri cal Storm Dura on. Lowest mass balance: 99.20%
Node Event USNode
Peak(mins)
Level(m)
Depth(m)
In ow(l/s)
NodeVol (m³)
Flood(m³)
Status
Link Event(Upstream Depth)
USNode
Link DSNode
Ou low(l/s)
Velocity(m/s)
Flow/Cap LinkVol (m³)
DischargeVol (m³)
15 minute winter 400 10 22.166 0.058 28.1 0.1117 0.0000 OK
15 minute winter 400 1.000 401 27.8 0.855 0.036 1.7855
15 minute winter 401 11 19.544 0.190 57.9 0.3755 0.0000 OK
15 minute winter 401 1.001 402 56.5 0.861 0.354 3.1261
15 minute winter 402 11 19.437 0.275 114.0 0.7147 0.0000 OK
15 minute winter 402 1.002 403 111.9 1.028 0.516 8.9062
15 minute winter 403 11 19.254 0.257 182.3 0.7158 0.0000 OK
15 minute winter 403 1.003 404 179.7 1.878 0.454 7.8358
15 minute winter 404 11 18.680 0.224 213.0 0.4979 0.0000 OK
15 minute winter 404 1.004 405 209.0 2.601 0.304 2.0718
15 minute winter 405 12 18.372 0.376 245.4 0.8012 0.0000 OK
15 minute winter 405 1.005 406 243.1 1.353 0.251 10.5937
15 minute winter 406 13 18.336 1.232 323.0 3.9191 0.0000 SURCHARGED
15 minute winter 406 1.006 407 297.8 1.057 0.414 2.5864
15 minute winter 407 13 18.293 1.289 330.9 3.8981 0.0000 SURCHARGED
15 minute winter 407 1.007 408 336.7 1.195 1.187 18.6504
15 minute winter 408 12 18.100 1.210 370.5 3.3413 0.0000 SURCHARGED
15 minute winter 408 1.008 409 372.1 1.321 1.312 18.6501
15 minute winter 409 12 17.886 1.110 411.2 3.0856 0.0000 SURCHARGED
15 minute winter 409 1.009 410 413.0 1.466 1.456 18.6504
15 minute winter 410 12 17.600 0.938 449.0 2.2933 0.0000 SURCHARGED
15 minute winter 410 1.010 411 449.2 1.595 1.583 10.7908
15 minute winter 411 12 17.379 0.783 513.4 2.2580 0.0000 SURCHARGED
15 minute winter 411 1.011 412 510.4 2.343 1.672 15.0600
15 minute winter 412 12 16.676 0.236 565.2 0.6103 0.0000 OK
15 minute winter 412 1.012 413 560.0 5.653 0.308 7.7665 348.4
15 minute winter 413 12 11.223 0.223 560.0 0.0000 0.0000 OK
