s n 0 0 2 hsg c 1s, 2s, 3s, 4s, 5s 0.000 hsg d 5.534 other 1s, 2s, 3s, 4s, 5s 8.818 total area morse...
TRANSCRIPT
SN 002
Type II 24-hr 1 Year Rainfall=2.10"Morse Lot 6 PreDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 1HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 1S: Predevelopment - Mini Storage
[49] Hint: Tc<2dt may require smaller dt
Runoff = 2.18 cfs @ 11.98 hrs, Volume= 0.152 af, Depth= 0.21"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsType II 24-hr 1 Year Rainfall=2.10"
Area (ac) CN Description
1.900 39 Pasture/grassland/range, Good, HSG A6.980 74 Pasture/grassland/range, Good, HSG C
8.880 67 Weighted Average8.880 Pervious Area
Tc Length Slope Velocity Capacity Description(min) (feet) (ft/ft) (ft/sec) (cfs)
3.6 300 0.0400 1.40 Shallow Concentrated Flow, Shallow FlowShort Grass Pasture Kv= 7.0 fps
Subcatchment 1S: Predevelopment - Mini Storage
Runoff
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
2
1
0
Type II 24-hr 1 Year
Rainfall=2.10"
Runoff Area=8.880 ac
Runoff Volume=0.152 af
Runoff Depth=0.21"
Flow Length=300'
Slope=0.0400 '/'
Tc=3.6 min
CN=67
2.18 cfs
Type II 24-hr 10 Year Rainfall=3.10"Morse Lot 6 PreDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 2HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 1S: Predevelopment - Mini Storage
[49] Hint: Tc<2dt may require smaller dt
Runoff = 10.03 cfs @ 11.95 hrs, Volume= 0.470 af, Depth= 0.64"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsType II 24-hr 10 Year Rainfall=3.10"
Area (ac) CN Description
1.900 39 Pasture/grassland/range, Good, HSG A6.980 74 Pasture/grassland/range, Good, HSG C
8.880 67 Weighted Average8.880 Pervious Area
Tc Length Slope Velocity Capacity Description(min) (feet) (ft/ft) (ft/sec) (cfs)
3.6 300 0.0400 1.40 Shallow Concentrated Flow, Shallow FlowShort Grass Pasture Kv= 7.0 fps
Subcatchment 1S: Predevelopment - Mini Storage
Runoff
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
11
10
9
8
7
6
5
4
3
2
1
0
Type II 24-hr 10 Year
Rainfall=3.10"
Runoff Area=8.880 ac
Runoff Volume=0.470 af
Runoff Depth=0.64"
Flow Length=300'
Slope=0.0400 '/'
Tc=3.6 min
CN=67
10.03 cfs
Type II 24-hr 100 Year Rainfall=5.20"Morse Lot 6 PreDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 3HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 1S: Predevelopment - Mini Storage
[49] Hint: Tc<2dt may require smaller dt
Runoff = 33.02 cfs @ 11.95 hrs, Volume= 1.438 af, Depth= 1.94"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsType II 24-hr 100 Year Rainfall=5.20"
Area (ac) CN Description
1.900 39 Pasture/grassland/range, Good, HSG A6.980 74 Pasture/grassland/range, Good, HSG C
8.880 67 Weighted Average8.880 Pervious Area
Tc Length Slope Velocity Capacity Description(min) (feet) (ft/ft) (ft/sec) (cfs)
3.6 300 0.0400 1.40 Shallow Concentrated Flow, Shallow FlowShort Grass Pasture Kv= 7.0 fps
Subcatchment 1S: Predevelopment - Mini Storage
Runoff
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
Type II 24-hr 100 Year
Rainfall=5.20"
Runoff Area=8.880 ac
Runoff Volume=1.438 af
Runoff Depth=1.94"
Flow Length=300'
Slope=0.0400 '/'
Tc=3.6 min
CN=67
33.02 cfs
Type II 24-hr WQv Rainfall=0.90"Morse Lot 6 PreDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 4HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 1S: Predevelopment - Mini Storage
[49] Hint: Tc<2dt may require smaller dt[45] Hint: Runoff=Zero
Runoff = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Depth= 0.00"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsType II 24-hr WQv Rainfall=0.90"
Area (ac) CN Description
1.900 39 Pasture/grassland/range, Good, HSG A6.980 74 Pasture/grassland/range, Good, HSG C
8.880 67 Weighted Average8.880 Pervious Area
Tc Length Slope Velocity Capacity Description(min) (feet) (ft/ft) (ft/sec) (cfs)
3.6 300 0.0400 1.40 Shallow Concentrated Flow, Shallow FlowShort Grass Pasture Kv= 7.0 fps
Subcatchment 1S: Predevelopment - Mini Storage
Runoff
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
1
0
Type II 24-hr WQv
Rainfall=0.90"
Runoff Area=8.880 ac
Runoff Volume=0.000 af
Runoff Depth=0.00"
Flow Length=300'
Slope=0.0400 '/'
Tc=3.6 min
CN=67
0.00 cfs
1S
Lower Area
2S
Upper Section
3S
Drains off site
4S
New Building (2015)
5S
New Buildings (2016)
1R
Grass Swale
2R
S/N 001
1P
Upper Pond
2P
Lower Pond
Drainage Diagram for Morse Lot 6 PostDev 070716Prepared by Ruggiano Engineering, Printed 7/12/2016
HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Subcat Reach Pond Link
S/N 002.1
Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 2HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Area Listing (all nodes)
Area
(acres)
CN Description
(subcatchment-numbers)
0.344 39 >75% Grass cover, Good, HSG A (5S)
0.030 61 >75% Grass cover, Good, HSG B (4S)
2.910 74 >75% Grass cover, Good, HSG C (1S,2S,3S,4S,5S)
5.534 98 Paved parking & roofs (1S,2S,3S,4S,5S)
8.818 TOTAL AREA
Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 3HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Soil Listing (all nodes)
Area
(acres)
Soil
Goup
Subcatchment
Numbers
0.344 HSG A 5S
0.030 HSG B 4S
2.910 HSG C 1S, 2S, 3S, 4S, 5S
0.000 HSG D
5.534 Other 1S, 2S, 3S, 4S, 5S
8.818 TOTAL AREA
Type II 24-hr 1 Year Rainfall=2.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 4HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Time span=5.00-100.00 hrs, dt=0.05 hrs, 1901 pointsRunoff by SCS TR-20 method, UH=SCS
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Runoff Area=1.770 ac 69.49% Impervious Runoff Depth=1.25"Subcatchment 1S: Lower Area Flow Length=522' Tc=4.7 min CN=91 Runoff=3.98 cfs 0.185 af
Runoff Area=2.100 ac 69.52% Impervious Runoff Depth=1.25"Subcatchment 2S: Upper Section Flow Length=440' Tc=3.7 min CN=91 Runoff=4.90 cfs 0.219 af
Runoff Area=1.520 ac 50.66% Impervious Runoff Depth=0.93"Subcatchment 3S: Drains off site Flow Length=202' Tc=2.8 min CN=86 Runoff=2.74 cfs 0.117 af
Runoff Area=1.100 ac 35.45% Impervious Runoff Depth=0.72"Subcatchment 4S: New Building (2015) Tc=0.0 min CN=82 Runoff=1.62 cfs 0.066 af
Runoff Area=2.328 ac 72.34% Impervious Runoff Depth=0.93"Subcatchment 5S: New Buildings (2016) Flow Length=440' Tc=3.7 min CN=86 Runoff=4.11 cfs 0.180 af
Avg. Depth=0.52' Max Vel=0.39 fps Inflow=1.62 cfs 0.066 afReach 1R: Grass Swalen=0.150 L=310.0' S=0.0065 '/' Capacity=8.47 cfs Outflow=0.80 cfs 0.066 af
Inflow=0.21 cfs 0.640 afReach 2R: S/N 001 Outflow=0.21 cfs 0.640 af
Peak Elev=420.04' Storage=27,699 cf Inflow=9.10 cfs 0.464 afPond 1P: Upper Pond Outflow=0.13 cfs 0.458 af
Peak Elev=414.72' Storage=8,786 cf Inflow=4.06 cfs 0.643 afPond 2P: Lower Pond Outflow=0.21 cfs 0.640 af
Total Runoff Area = 8.818 ac Runoff Volume = 0.766 af Average Runoff Depth = 1.04"37.24% Pervious = 3.284 ac 62.76% Impervious = 5.534 ac
S/N 002.1
Type II 24-hr 1 Year Rainfall=2.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 5HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 1S: Lower Area
[49] Hint: Tc<2dt may require smaller dt
Runoff = 3.98 cfs @ 11.95 hrs, Volume= 0.185 af, Depth= 1.25"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsType II 24-hr 1 Year Rainfall=2.10"
Area (ac) CN Description
1.230 98 Paved parking & roofs0.540 74 >75% Grass cover, Good, HSG C
1.770 91 Weighted Average0.540 Pervious Area1.230 Impervious Area
Tc Length Slope Velocity Capacity Description(min) (feet) (ft/ft) (ft/sec) (cfs)
0.6 32 0.0200 0.89 Sheet Flow, Sheet (imp)Smooth surfaces n= 0.011 P2= 2.10"
1.0 90 0.0050 1.44 Shallow Concentrated Flow, Shallow ConcPaved Kv= 20.3 fps
3.1 400 0.0022 2.13 1.67 Circular Channel (pipe), 12" pipe flowDiam= 12.0" Area= 0.8 sf Perim= 3.1' r= 0.25'n= 0.013 Corrugated PE, smooth interior
4.7 522 Total
Subcatchment 1S: Lower Area
Runoff
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
4
3
2
1
0
Type II 24-hr 1 Year
Rainfall=2.10"
Runoff Area=1.770 ac
Runoff Volume=0.185 af
Runoff Depth=1.25"
Flow Length=522'
Tc=4.7 min
CN=91
3.98 cfs
Type II 24-hr 1 Year Rainfall=2.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 6HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 2S: Upper Section
Tc Path:- From ROW along driveway entrance over grass to pavement- Over pavement into catch basin (CB-9)- CB-9 to Pond
[49] Hint: Tc<2dt may require smaller dt
Runoff = 4.90 cfs @ 11.94 hrs, Volume= 0.219 af, Depth= 1.25"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsType II 24-hr 1 Year Rainfall=2.10"
Area (ac) CN Description
1.460 98 Paved parking & roofs0.640 74 >75% Grass cover, Good, HSG C
2.100 91 Weighted Average0.640 Pervious Area1.460 Impervious Area
Tc Length Slope Velocity Capacity Description(min) (feet) (ft/ft) (ft/sec) (cfs)
0.7 60 0.0050 1.44 Shallow Concentrated Flow, Shallow ConcentratedPaved Kv= 20.3 fps
3.0 380 0.0022 2.13 1.67 Circular Channel (pipe), 12" pipe flowDiam= 12.0" Area= 0.8 sf Perim= 3.1' r= 0.25'n= 0.013 Corrugated PE, smooth interior
3.7 440 Total
Type II 24-hr 1 Year Rainfall=2.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 7HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Subcatchment 2S: Upper Section
Runoff
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
5
4
3
2
1
0
Type II 24-hr 1 Year
Rainfall=2.10"
Runoff Area=2.100 ac
Runoff Volume=0.219 af
Runoff Depth=1.25"
Flow Length=440'
Tc=3.7 min
CN=91
4.90 cfs
Type II 24-hr 1 Year Rainfall=2.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 8HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 3S: Drains off site
[49] Hint: Tc<2dt may require smaller dt
Runoff = 2.74 cfs @ 11.94 hrs, Volume= 0.117 af, Depth= 0.93"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsType II 24-hr 1 Year Rainfall=2.10"
Area (ac) CN Description
0.770 98 Paved parking & roofs0.750 74 >75% Grass cover, Good, HSG C
1.520 86 Weighted Average0.750 Pervious Area0.770 Impervious Area
Tc Length Slope Velocity Capacity Description(min) (feet) (ft/ft) (ft/sec) (cfs)
0.6 32 0.0200 0.89 Sheet Flow, Sheet flowSmooth surfaces n= 0.011 P2= 2.10"
1.4 120 0.0050 1.44 Shallow Concentrated Flow, Shallow ConcentratedPaved Kv= 20.3 fps
0.8 50 0.0200 0.99 Shallow Concentrated Flow, Shallow Conc-grassShort Grass Pasture Kv= 7.0 fps
2.8 202 Total
Subcatchment 3S: Drains off site
Runoff
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
3
2
1
0
Type II 24-hr 1 Year
Rainfall=2.10"
Runoff Area=1.520 ac
Runoff Volume=0.117 af
Runoff Depth=0.93"
Flow Length=202'
Tc=2.8 min
CN=86
2.74 cfs
Type II 24-hr 1 Year Rainfall=2.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 9HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 4S: New Building (2015)
[46] Hint: Tc=0 (Instant runoff peak depends on dt)
Runoff = 1.62 cfs @ 11.90 hrs, Volume= 0.066 af, Depth= 0.72"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsType II 24-hr 1 Year Rainfall=2.10"
Area (ac) CN Description
0.390 98 Paved parking & roofs0.680 74 >75% Grass cover, Good, HSG C0.030 61 >75% Grass cover, Good, HSG B
1.100 82 Weighted Average0.710 Pervious Area0.390 Impervious Area
Subcatchment 4S: New Building (2015)
Runoff
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
1
0
Type II 24-hr 1 Year
Rainfall=2.10"
Runoff Area=1.100 ac
Runoff Volume=0.066 af
Runoff Depth=0.72"
Tc=0.0 min
CN=82
1.62 cfs
Type II 24-hr 1 Year Rainfall=2.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 10HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 5S: New Buildings (2016)
Tc Path:- From ROW along driveway entrance over grass to pavement- Over pavement into catch basin (CB-9)- CB-9 to Pond
[49] Hint: Tc<2dt may require smaller dt
Runoff = 4.11 cfs @ 11.95 hrs, Volume= 0.180 af, Depth= 0.93"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsType II 24-hr 1 Year Rainfall=2.10"
Area (ac) CN Description
1.684 98 Paved parking & roofs0.300 74 >75% Grass cover, Good, HSG C0.344 39 >75% Grass cover, Good, HSG A
2.328 86 Weighted Average0.644 Pervious Area1.684 Impervious Area
Tc Length Slope Velocity Capacity Description(min) (feet) (ft/ft) (ft/sec) (cfs)
0.7 60 0.0050 1.44 Shallow Concentrated Flow, Shallow ConcentratedPaved Kv= 20.3 fps
3.0 380 0.0022 2.13 1.67 Circular Channel (pipe), 12" pipe flowDiam= 12.0" Area= 0.8 sf Perim= 3.1' r= 0.25'n= 0.013 Corrugated PE, smooth interior
3.7 440 Total
Type II 24-hr 1 Year Rainfall=2.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 11HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Subcatchment 5S: New Buildings (2016)
Runoff
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
4
3
2
1
0
Type II 24-hr 1 Year
Rainfall=2.10"
Runoff Area=2.328 ac
Runoff Volume=0.180 af
Runoff Depth=0.93"
Flow Length=440'
Tc=3.7 min
CN=86
4.11 cfs
Type II 24-hr 1 Year Rainfall=2.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 12HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Reach 1R: Grass Swale
Inflow Area = 1.100 ac, 35.45% Impervious, Inflow Depth = 0.72" for 1 Year eventInflow = 1.62 cfs @ 11.90 hrs, Volume= 0.066 afOutflow = 0.80 cfs @ 12.20 hrs, Volume= 0.066 af, Atten= 51%, Lag= 18.1 min
Routing by Stor-Ind+Trans method, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsMax. Velocity= 0.39 fps, Min. Travel Time= 13.4 minAvg. Velocity = 0.10 fps, Avg. Travel Time= 49.6 min
Peak Storage= 666 cf @ 11.97 hrs, Average Depth at Peak Storage= 0.52'Bank-Full Depth= 1.50', Capacity at Bank-Full= 8.47 cfs
2.00' x 1.50' deep channel, n= 0.150 Sheet flow over Short GrassSide Slope Z-value= 4.0 '/' Top Width= 14.00'Length= 310.0' Slope= 0.0065 '/'Inlet Invert= 423.00', Outlet Invert= 421.00'
‡
Reach 1R: Grass Swale
InflowOutflow
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
1
0
Inflow Area=1.100 ac
Avg. Depth=0.52'
Max Vel=0.39 fps
n=0.150
L=310.0'
S=0.0065 '/'
Capacity=8.47 cfs
1.62 cfs
0.80 cfs
Type II 24-hr 1 Year Rainfall=2.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 13HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Reach 2R: S/N 001
[40] Hint: Not Described (Outflow=Inflow)
Inflow Area = 7.298 ac, 65.28% Impervious, Inflow Depth > 1.05" for 1 Year eventInflow = 0.21 cfs @ 15.34 hrs, Volume= 0.640 afOutflow = 0.21 cfs @ 15.34 hrs, Volume= 0.640 af, Atten= 0%, Lag= 0.0 min
Routing by Stor-Ind+Trans method, Time Span= 5.00-100.00 hrs, dt= 0.05 hrs
Reach 2R: S/N 001
InflowOutflow
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
0.230.22
0.21
0.20.19
0.18
0.170.16
0.15
0.140.13
0.12
0.110.1
0.09
0.080.07
0.06
0.050.04
0.03
0.020.01
0
Inflow Area=7.298 ac0.21 cfs
0.21 cfs
002.1
002.1
Type II 24-hr 1 Year Rainfall=2.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 14HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Pond 1P: Upper Pond
Inflow Area = 5.528 ac, 63.93% Impervious, Inflow Depth = 1.01" for 1 Year eventInflow = 9.10 cfs @ 11.94 hrs, Volume= 0.464 afOutflow = 0.13 cfs @ 19.81 hrs, Volume= 0.458 af, Atten= 99%, Lag= 471.8 minPrimary = 0.13 cfs @ 19.81 hrs, Volume= 0.458 af
Routing by Stor-Ind method, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsStarting Elev= 418.50' Surf.Area= 0 sf Storage= 12,807 cfPeak Elev= 420.04' @ 19.81 hrs Surf.Area= 0 sf Storage= 27,699 cf (14,892 cf above start)
Plug-Flow detention time= 2,777.8 min calculated for 0.164 af (35% of inflow)Center-of-Mass det. time= 1,433.9 min ( 2,267.4 - 833.5 )
Volume Invert Avail.Storage Storage Description
#1 415.00' 73,395 cf Custom Stage Data Listed below
Elevation Inc.Store Cum.Store(feet) (cubic-feet) (cubic-feet)
415.00 0 0416.00 307 307417.00 2,631 2,938418.00 5,848 8,786419.00 8,042 16,828420.00 10,401 27,229421.00 12,679 39,908422.00 16,351 56,259422.50 17,136 73,395
Device Routing Invert Outlet Devices
#1 Primary 418.50' 2.0" Vert. Orifice/Grate C= 0.600 #2 Primary 420.50' 24.0" Horiz. Orifice/Grate Limited to weir flow C= 0.600 #3 Primary 421.00' 5.0' long x 3.0' breadth Broad-Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 Coef. (English) 2.44 2.58 2.68 2.67 2.65 2.64 2.64 2.68 2.68 2.72 2.81 2.92 2.97 3.07 3.32
Primary OutFlow Max=0.13 cfs @ 19.81 hrs HW=420.04' (Free Discharge)1=Orifice/Grate (Orifice Controls 0.13 cfs @ 5.81 fps)2=Orifice/Grate ( Controls 0.00 cfs)3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs)
Type II 24-hr 1 Year Rainfall=2.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 15HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Pond 1P: Upper Pond
InflowPrimary
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
10
9
8
7
6
5
4
3
2
1
0
Inflow Area=5.528 ac
Peak Elev=420.04'
Storage=27,699 cf
9.10 cfs
0.13 cfs
Type II 24-hr 1 Year Rainfall=2.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 16HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Pond 2P: Lower Pond
Inflow Area = 7.298 ac, 65.28% Impervious, Inflow Depth > 1.06" for 1 Year eventInflow = 4.06 cfs @ 11.95 hrs, Volume= 0.643 afOutflow = 0.21 cfs @ 15.34 hrs, Volume= 0.640 af, Atten= 95%, Lag= 203.2 minPrimary = 0.21 cfs @ 15.34 hrs, Volume= 0.640 af
Routing by Stor-Ind method, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsStarting Elev= 413.00' Surf.Area= 0 sf Storage= 2,771 cfPeak Elev= 414.72' @ 15.34 hrs Surf.Area= 0 sf Storage= 8,786 cf (6,015 cf above start)
Plug-Flow detention time= 989.7 min calculated for 0.576 af (90% of inflow)Center-of-Mass det. time= 551.8 min ( 2,402.2 - 1,850.4 )
Volume Invert Avail.Storage Storage Description
#1 411.00' 15,572 cf Custom Stage Data Listed below
Elevation Inc.Store Cum.Store(feet) (cubic-feet) (cubic-feet)
411.00 0 0412.00 935 935413.00 1,836 2,771414.00 2,971 5,742415.00 4,244 9,986416.00 5,586 15,572
Device Routing Invert Outlet Devices
#1 Primary 413.00' 2.0" Vert. Orifice/Grate C= 0.600 #2 Primary 414.70' 24.0" Horiz. Orifice/Grate Limited to weir flow C= 0.600 #3 Primary 415.00' 5.0' long x 3.0' breadth Broad-Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 Coef. (English) 2.44 2.58 2.68 2.67 2.65 2.64 2.64 2.68 2.68 2.72 2.81 2.92 2.97 3.07 3.32
Primary OutFlow Max=0.18 cfs @ 15.34 hrs HW=414.72' (Free Discharge)1=Orifice/Grate (Orifice Controls 0.13 cfs @ 6.15 fps)2=Orifice/Grate (Weir Controls 0.05 cfs @ 0.43 fps)3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs)
Type II 24-hr 1 Year Rainfall=2.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 17HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Pond 2P: Lower Pond
InflowPrimary
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
4
3
2
1
0
Inflow Area=7.298 ac
Peak Elev=414.72'
Storage=8,786 cf
4.06 cfs
0.21 cfs
Type II 24-hr 10 Year Rainfall=3.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 18HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Time span=5.00-100.00 hrs, dt=0.05 hrs, 1901 pointsRunoff by SCS TR-20 method, UH=SCS
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Runoff Area=1.770 ac 69.49% Impervious Runoff Depth=2.16"Subcatchment 1S: Lower Area Flow Length=522' Tc=4.7 min CN=91 Runoff=6.71 cfs 0.319 af
Runoff Area=2.100 ac 69.52% Impervious Runoff Depth=2.16"Subcatchment 2S: Upper Section Flow Length=440' Tc=3.7 min CN=91 Runoff=8.23 cfs 0.379 af
Runoff Area=1.520 ac 50.66% Impervious Runoff Depth=1.75"Subcatchment 3S: Drains off site Flow Length=202' Tc=2.8 min CN=86 Runoff=5.08 cfs 0.221 af
Runoff Area=1.100 ac 35.45% Impervious Runoff Depth=1.46"Subcatchment 4S: New Building (2015) Tc=0.0 min CN=82 Runoff=3.30 cfs 0.134 af
Runoff Area=2.328 ac 72.34% Impervious Runoff Depth=1.75"Subcatchment 5S: New Buildings (2016) Flow Length=440' Tc=3.7 min CN=86 Runoff=7.64 cfs 0.339 af
Avg. Depth=0.79' Max Vel=0.49 fps Inflow=3.30 cfs 0.134 afReach 1R: Grass Swalen=0.150 L=310.0' S=0.0065 '/' Capacity=8.47 cfs Outflow=1.91 cfs 0.134 af
Inflow=2.56 cfs 1.156 afReach 2R: S/N 001 Outflow=2.56 cfs 1.156 af
Peak Elev=420.62' Storage=35,053 cf Inflow=16.42 cfs 0.852 afPond 1P: Upper Pond Outflow=0.99 cfs 0.842 af
Peak Elev=414.94' Storage=9,737 cf Inflow=6.82 cfs 1.161 afPond 2P: Lower Pond Outflow=2.56 cfs 1.156 af
Total Runoff Area = 8.818 ac Runoff Volume = 1.392 af Average Runoff Depth = 1.89"37.24% Pervious = 3.284 ac 62.76% Impervious = 5.534 ac
S/N 002.1
Type II 24-hr 10 Year Rainfall=3.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 19HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 1S: Lower Area
[49] Hint: Tc<2dt may require smaller dt
Runoff = 6.71 cfs @ 11.95 hrs, Volume= 0.319 af, Depth= 2.16"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsType II 24-hr 10 Year Rainfall=3.10"
Area (ac) CN Description
1.230 98 Paved parking & roofs0.540 74 >75% Grass cover, Good, HSG C
1.770 91 Weighted Average0.540 Pervious Area1.230 Impervious Area
Tc Length Slope Velocity Capacity Description(min) (feet) (ft/ft) (ft/sec) (cfs)
0.6 32 0.0200 0.89 Sheet Flow, Sheet (imp)Smooth surfaces n= 0.011 P2= 2.10"
1.0 90 0.0050 1.44 Shallow Concentrated Flow, Shallow ConcPaved Kv= 20.3 fps
3.1 400 0.0022 2.13 1.67 Circular Channel (pipe), 12" pipe flowDiam= 12.0" Area= 0.8 sf Perim= 3.1' r= 0.25'n= 0.013 Corrugated PE, smooth interior
4.7 522 Total
Subcatchment 1S: Lower Area
Runoff
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
7
6
5
4
3
2
1
0
Type II 24-hr 10 Year
Rainfall=3.10"
Runoff Area=1.770 ac
Runoff Volume=0.319 af
Runoff Depth=2.16"
Flow Length=522'
Tc=4.7 min
CN=91
6.71 cfs
Type II 24-hr 10 Year Rainfall=3.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 20HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 2S: Upper Section
Tc Path:- From ROW along driveway entrance over grass to pavement- Over pavement into catch basin (CB-9)- CB-9 to Pond
[49] Hint: Tc<2dt may require smaller dt
Runoff = 8.23 cfs @ 11.94 hrs, Volume= 0.379 af, Depth= 2.16"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsType II 24-hr 10 Year Rainfall=3.10"
Area (ac) CN Description
1.460 98 Paved parking & roofs0.640 74 >75% Grass cover, Good, HSG C
2.100 91 Weighted Average0.640 Pervious Area1.460 Impervious Area
Tc Length Slope Velocity Capacity Description(min) (feet) (ft/ft) (ft/sec) (cfs)
0.7 60 0.0050 1.44 Shallow Concentrated Flow, Shallow ConcentratedPaved Kv= 20.3 fps
3.0 380 0.0022 2.13 1.67 Circular Channel (pipe), 12" pipe flowDiam= 12.0" Area= 0.8 sf Perim= 3.1' r= 0.25'n= 0.013 Corrugated PE, smooth interior
3.7 440 Total
Type II 24-hr 10 Year Rainfall=3.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 21HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Subcatchment 2S: Upper Section
Runoff
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
9
8
7
6
5
4
3
2
1
0
Type II 24-hr 10 Year
Rainfall=3.10"
Runoff Area=2.100 ac
Runoff Volume=0.379 af
Runoff Depth=2.16"
Flow Length=440'
Tc=3.7 min
CN=91
8.23 cfs
Type II 24-hr 10 Year Rainfall=3.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 22HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 3S: Drains off site
[49] Hint: Tc<2dt may require smaller dt
Runoff = 5.08 cfs @ 11.93 hrs, Volume= 0.221 af, Depth= 1.75"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsType II 24-hr 10 Year Rainfall=3.10"
Area (ac) CN Description
0.770 98 Paved parking & roofs0.750 74 >75% Grass cover, Good, HSG C
1.520 86 Weighted Average0.750 Pervious Area0.770 Impervious Area
Tc Length Slope Velocity Capacity Description(min) (feet) (ft/ft) (ft/sec) (cfs)
0.6 32 0.0200 0.89 Sheet Flow, Sheet flowSmooth surfaces n= 0.011 P2= 2.10"
1.4 120 0.0050 1.44 Shallow Concentrated Flow, Shallow ConcentratedPaved Kv= 20.3 fps
0.8 50 0.0200 0.99 Shallow Concentrated Flow, Shallow Conc-grassShort Grass Pasture Kv= 7.0 fps
2.8 202 Total
Subcatchment 3S: Drains off site
Runoff
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
5
4
3
2
1
0
Type II 24-hr 10 Year
Rainfall=3.10"
Runoff Area=1.520 ac
Runoff Volume=0.221 af
Runoff Depth=1.75"
Flow Length=202'
Tc=2.8 min
CN=86
5.08 cfs
Type II 24-hr 10 Year Rainfall=3.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 23HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 4S: New Building (2015)
[46] Hint: Tc=0 (Instant runoff peak depends on dt)
Runoff = 3.30 cfs @ 11.89 hrs, Volume= 0.134 af, Depth= 1.46"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsType II 24-hr 10 Year Rainfall=3.10"
Area (ac) CN Description
0.390 98 Paved parking & roofs0.680 74 >75% Grass cover, Good, HSG C0.030 61 >75% Grass cover, Good, HSG B
1.100 82 Weighted Average0.710 Pervious Area0.390 Impervious Area
Subcatchment 4S: New Building (2015)
Runoff
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
3
2
1
0
Type II 24-hr 10 Year
Rainfall=3.10"
Runoff Area=1.100 ac
Runoff Volume=0.134 af
Runoff Depth=1.46"
Tc=0.0 min
CN=82
3.30 cfs
Type II 24-hr 10 Year Rainfall=3.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 24HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 5S: New Buildings (2016)
Tc Path:- From ROW along driveway entrance over grass to pavement- Over pavement into catch basin (CB-9)- CB-9 to Pond
[49] Hint: Tc<2dt may require smaller dt
Runoff = 7.64 cfs @ 11.94 hrs, Volume= 0.339 af, Depth= 1.75"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsType II 24-hr 10 Year Rainfall=3.10"
Area (ac) CN Description
1.684 98 Paved parking & roofs0.300 74 >75% Grass cover, Good, HSG C0.344 39 >75% Grass cover, Good, HSG A
2.328 86 Weighted Average0.644 Pervious Area1.684 Impervious Area
Tc Length Slope Velocity Capacity Description(min) (feet) (ft/ft) (ft/sec) (cfs)
0.7 60 0.0050 1.44 Shallow Concentrated Flow, Shallow ConcentratedPaved Kv= 20.3 fps
3.0 380 0.0022 2.13 1.67 Circular Channel (pipe), 12" pipe flowDiam= 12.0" Area= 0.8 sf Perim= 3.1' r= 0.25'n= 0.013 Corrugated PE, smooth interior
3.7 440 Total
Type II 24-hr 10 Year Rainfall=3.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 25HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Subcatchment 5S: New Buildings (2016)
Runoff
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
8
7
6
5
4
3
2
1
0
Type II 24-hr 10 Year
Rainfall=3.10"
Runoff Area=2.328 ac
Runoff Volume=0.339 af
Runoff Depth=1.75"
Flow Length=440'
Tc=3.7 min
CN=86
7.64 cfs
Type II 24-hr 10 Year Rainfall=3.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 26HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Reach 1R: Grass Swale
Inflow Area = 1.100 ac, 35.45% Impervious, Inflow Depth = 1.46" for 10 Year eventInflow = 3.30 cfs @ 11.89 hrs, Volume= 0.134 afOutflow = 1.91 cfs @ 12.14 hrs, Volume= 0.134 af, Atten= 42%, Lag= 14.6 min
Routing by Stor-Ind+Trans method, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsMax. Velocity= 0.49 fps, Min. Travel Time= 10.6 minAvg. Velocity = 0.12 fps, Avg. Travel Time= 42.8 min
Peak Storage= 1,267 cf @ 11.96 hrs, Average Depth at Peak Storage= 0.79'Bank-Full Depth= 1.50', Capacity at Bank-Full= 8.47 cfs
2.00' x 1.50' deep channel, n= 0.150 Sheet flow over Short GrassSide Slope Z-value= 4.0 '/' Top Width= 14.00'Length= 310.0' Slope= 0.0065 '/'Inlet Invert= 423.00', Outlet Invert= 421.00'
‡
Reach 1R: Grass Swale
InflowOutflow
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
3
2
1
0
Inflow Area=1.100 ac
Avg. Depth=0.79'
Max Vel=0.49 fps
n=0.150
L=310.0'
S=0.0065 '/'
Capacity=8.47 cfs
3.30 cfs
1.91 cfs
Type II 24-hr 10 Year Rainfall=3.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 27HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Reach 2R: S/N 001
[40] Hint: Not Described (Outflow=Inflow)
Inflow Area = 7.298 ac, 65.28% Impervious, Inflow Depth > 1.90" for 10 Year eventInflow = 2.56 cfs @ 12.07 hrs, Volume= 1.156 afOutflow = 2.56 cfs @ 12.07 hrs, Volume= 1.156 af, Atten= 0%, Lag= 0.0 min
Routing by Stor-Ind+Trans method, Time Span= 5.00-100.00 hrs, dt= 0.05 hrs
Reach 2R: S/N 001
InflowOutflow
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
2
1
0
Inflow Area=7.298 ac2.56 cfs
2.56 cfs
002.1
002.1
Type II 24-hr 10 Year Rainfall=3.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 28HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Pond 1P: Upper Pond
Inflow Area = 5.528 ac, 63.93% Impervious, Inflow Depth = 1.85" for 10 Year eventInflow = 16.42 cfs @ 11.94 hrs, Volume= 0.852 afOutflow = 0.99 cfs @ 13.00 hrs, Volume= 0.842 af, Atten= 94%, Lag= 63.2 minPrimary = 0.99 cfs @ 13.00 hrs, Volume= 0.842 af
Routing by Stor-Ind method, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsStarting Elev= 418.50' Surf.Area= 0 sf Storage= 12,807 cfPeak Elev= 420.62' @ 13.00 hrs Surf.Area= 0 sf Storage= 35,053 cf (22,246 cf above start)
Plug-Flow detention time= 2,007.0 min calculated for 0.548 af (64% of inflow)Center-of-Mass det. time= 1,262.6 min ( 2,078.8 - 816.2 )
Volume Invert Avail.Storage Storage Description
#1 415.00' 73,395 cf Custom Stage Data Listed below
Elevation Inc.Store Cum.Store(feet) (cubic-feet) (cubic-feet)
415.00 0 0416.00 307 307417.00 2,631 2,938418.00 5,848 8,786419.00 8,042 16,828420.00 10,401 27,229421.00 12,679 39,908422.00 16,351 56,259422.50 17,136 73,395
Device Routing Invert Outlet Devices
#1 Primary 418.50' 2.0" Vert. Orifice/Grate C= 0.600 #2 Primary 420.50' 24.0" Horiz. Orifice/Grate Limited to weir flow C= 0.600 #3 Primary 421.00' 5.0' long x 3.0' breadth Broad-Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 Coef. (English) 2.44 2.58 2.68 2.67 2.65 2.64 2.64 2.68 2.68 2.72 2.81 2.92 2.97 3.07 3.32
Primary OutFlow Max=0.97 cfs @ 13.00 hrs HW=420.62' (Free Discharge)1=Orifice/Grate (Orifice Controls 0.15 cfs @ 6.87 fps)2=Orifice/Grate (Weir Controls 0.82 cfs @ 1.12 fps)3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs)
Type II 24-hr 10 Year Rainfall=3.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 29HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Pond 1P: Upper Pond
InflowPrimary
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Inflow Area=5.528 ac
Peak Elev=420.62'
Storage=35,053 cf
16.42 cfs
0.99 cfs
Type II 24-hr 10 Year Rainfall=3.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 30HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Pond 2P: Lower Pond
Inflow Area = 7.298 ac, 65.28% Impervious, Inflow Depth > 1.91" for 10 Year eventInflow = 6.82 cfs @ 11.95 hrs, Volume= 1.161 afOutflow = 2.56 cfs @ 12.07 hrs, Volume= 1.156 af, Atten= 62%, Lag= 7.3 minPrimary = 2.56 cfs @ 12.07 hrs, Volume= 1.156 af
Routing by Stor-Ind method, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsStarting Elev= 413.00' Surf.Area= 0 sf Storage= 2,771 cfPeak Elev= 414.94' @ 12.07 hrs Surf.Area= 0 sf Storage= 9,737 cf (6,966 cf above start)
Plug-Flow detention time= 663.8 min calculated for 1.092 af (94% of inflow)Center-of-Mass det. time= 390.2 min ( 2,117.2 - 1,727.0 )
Volume Invert Avail.Storage Storage Description
#1 411.00' 15,572 cf Custom Stage Data Listed below
Elevation Inc.Store Cum.Store(feet) (cubic-feet) (cubic-feet)
411.00 0 0412.00 935 935413.00 1,836 2,771414.00 2,971 5,742415.00 4,244 9,986416.00 5,586 15,572
Device Routing Invert Outlet Devices
#1 Primary 413.00' 2.0" Vert. Orifice/Grate C= 0.600 #2 Primary 414.70' 24.0" Horiz. Orifice/Grate Limited to weir flow C= 0.600 #3 Primary 415.00' 5.0' long x 3.0' breadth Broad-Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 Coef. (English) 2.44 2.58 2.68 2.67 2.65 2.64 2.64 2.68 2.68 2.72 2.81 2.92 2.97 3.07 3.32
Primary OutFlow Max=2.37 cfs @ 12.07 hrs HW=414.93' (Free Discharge)1=Orifice/Grate (Orifice Controls 0.14 cfs @ 6.54 fps)2=Orifice/Grate (Weir Controls 2.22 cfs @ 1.56 fps)3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs)
Type II 24-hr 10 Year Rainfall=3.10"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 31HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Pond 2P: Lower Pond
InflowPrimary
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
7
6
5
4
3
2
1
0
Inflow Area=7.298 ac
Peak Elev=414.94'
Storage=9,737 cf
6.82 cfs
2.56 cfs
Type II 24-hr WQv Rainfall=0.90"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 32HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Time span=5.00-100.00 hrs, dt=0.05 hrs, 1901 pointsRunoff by SCS TR-20 method, UH=SCS
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Runoff Area=1.770 ac 69.49% Impervious Runoff Depth=0.29"Subcatchment 1S: Lower Area Flow Length=522' Tc=4.7 min CN=91 Runoff=0.93 cfs 0.043 af
Runoff Area=2.100 ac 69.52% Impervious Runoff Depth=0.29"Subcatchment 2S: Upper Section Flow Length=440' Tc=3.7 min CN=91 Runoff=1.16 cfs 0.051 af
Runoff Area=1.520 ac 50.66% Impervious Runoff Depth=0.15"Subcatchment 3S: Drains off site Flow Length=202' Tc=2.8 min CN=86 Runoff=0.40 cfs 0.019 af
Runoff Area=1.100 ac 35.45% Impervious Runoff Depth=0.08"Subcatchment 4S: New Building (2015) Tc=0.0 min CN=82 Runoff=0.11 cfs 0.007 af
Runoff Area=2.328 ac 72.34% Impervious Runoff Depth=0.15"Subcatchment 5S: New Buildings (2016) Flow Length=440' Tc=3.7 min CN=86 Runoff=0.58 cfs 0.029 af
Avg. Depth=0.07' Max Vel=0.12 fps Inflow=0.11 cfs 0.007 afReach 1R: Grass Swalen=0.150 L=310.0' S=0.0065 '/' Capacity=8.47 cfs Outflow=0.02 cfs 0.007 af
Inflow=0.06 cfs 0.127 afReach 2R: S/N 001 Outflow=0.06 cfs 0.127 af
Peak Elev=418.77' Storage=14,972 cf Inflow=1.73 cfs 0.087 afPond 1P: Upper Pond Outflow=0.05 cfs 0.085 af
Peak Elev=413.42' Storage=4,021 cf Inflow=0.95 cfs 0.128 afPond 2P: Lower Pond Outflow=0.06 cfs 0.127 af
Total Runoff Area = 8.818 ac Runoff Volume = 0.149 af Average Runoff Depth = 0.20"37.24% Pervious = 3.284 ac 62.76% Impervious = 5.534 ac
S/N 002.1
Type II 24-hr WQv Rainfall=0.90"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 33HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 1S: Lower Area
[49] Hint: Tc<2dt may require smaller dt
Runoff = 0.93 cfs @ 11.96 hrs, Volume= 0.043 af, Depth= 0.29"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsType II 24-hr WQv Rainfall=0.90"
Area (ac) CN Description
1.230 98 Paved parking & roofs0.540 74 >75% Grass cover, Good, HSG C
1.770 91 Weighted Average0.540 Pervious Area1.230 Impervious Area
Tc Length Slope Velocity Capacity Description(min) (feet) (ft/ft) (ft/sec) (cfs)
0.6 32 0.0200 0.89 Sheet Flow, Sheet (imp)Smooth surfaces n= 0.011 P2= 2.10"
1.0 90 0.0050 1.44 Shallow Concentrated Flow, Shallow ConcPaved Kv= 20.3 fps
3.1 400 0.0022 2.13 1.67 Circular Channel (pipe), 12" pipe flowDiam= 12.0" Area= 0.8 sf Perim= 3.1' r= 0.25'n= 0.013 Corrugated PE, smooth interior
4.7 522 Total
Subcatchment 1S: Lower Area
Runoff
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
1
0
Type II 24-hr WQv
Rainfall=0.90"
Runoff Area=1.770 ac
Runoff Volume=0.043 af
Runoff Depth=0.29"
Flow Length=522'
Tc=4.7 min
CN=91
0.93 cfs
Type II 24-hr WQv Rainfall=0.90"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 34HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 2S: Upper Section
Tc Path:- From ROW along driveway entrance over grass to pavement- Over pavement into catch basin (CB-9)- CB-9 to Pond
[49] Hint: Tc<2dt may require smaller dt
Runoff = 1.16 cfs @ 11.95 hrs, Volume= 0.051 af, Depth= 0.29"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsType II 24-hr WQv Rainfall=0.90"
Area (ac) CN Description
1.460 98 Paved parking & roofs0.640 74 >75% Grass cover, Good, HSG C
2.100 91 Weighted Average0.640 Pervious Area1.460 Impervious Area
Tc Length Slope Velocity Capacity Description(min) (feet) (ft/ft) (ft/sec) (cfs)
0.7 60 0.0050 1.44 Shallow Concentrated Flow, Shallow ConcentratedPaved Kv= 20.3 fps
3.0 380 0.0022 2.13 1.67 Circular Channel (pipe), 12" pipe flowDiam= 12.0" Area= 0.8 sf Perim= 3.1' r= 0.25'n= 0.013 Corrugated PE, smooth interior
3.7 440 Total
Type II 24-hr WQv Rainfall=0.90"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 35HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Subcatchment 2S: Upper Section
Runoff
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
1
0
Type II 24-hr WQv
Rainfall=0.90"
Runoff Area=2.100 ac
Runoff Volume=0.051 af
Runoff Depth=0.29"
Flow Length=440'
Tc=3.7 min
CN=91
1.16 cfs
Type II 24-hr WQv Rainfall=0.90"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 36HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 3S: Drains off site
[49] Hint: Tc<2dt may require smaller dt
Runoff = 0.40 cfs @ 11.95 hrs, Volume= 0.019 af, Depth= 0.15"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsType II 24-hr WQv Rainfall=0.90"
Area (ac) CN Description
0.770 98 Paved parking & roofs0.750 74 >75% Grass cover, Good, HSG C
1.520 86 Weighted Average0.750 Pervious Area0.770 Impervious Area
Tc Length Slope Velocity Capacity Description(min) (feet) (ft/ft) (ft/sec) (cfs)
0.6 32 0.0200 0.89 Sheet Flow, Sheet flowSmooth surfaces n= 0.011 P2= 2.10"
1.4 120 0.0050 1.44 Shallow Concentrated Flow, Shallow ConcentratedPaved Kv= 20.3 fps
0.8 50 0.0200 0.99 Shallow Concentrated Flow, Shallow Conc-grassShort Grass Pasture Kv= 7.0 fps
2.8 202 Total
Subcatchment 3S: Drains off site
Runoff
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
0.44
0.42
0.4
0.38
0.36
0.34
0.32
0.3
0.28
0.26
0.24
0.22
0.2
0.18
0.16
0.14
0.12
0.1
0.08
0.06
0.04
0.02
0
Type II 24-hr WQv
Rainfall=0.90"
Runoff Area=1.520 ac
Runoff Volume=0.019 af
Runoff Depth=0.15"
Flow Length=202'
Tc=2.8 min
CN=86
0.40 cfs
Type II 24-hr WQv Rainfall=0.90"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 37HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 4S: New Building (2015)
[46] Hint: Tc=0 (Instant runoff peak depends on dt)
Runoff = 0.11 cfs @ 11.93 hrs, Volume= 0.007 af, Depth= 0.08"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsType II 24-hr WQv Rainfall=0.90"
Area (ac) CN Description
0.390 98 Paved parking & roofs0.680 74 >75% Grass cover, Good, HSG C0.030 61 >75% Grass cover, Good, HSG B
1.100 82 Weighted Average0.710 Pervious Area0.390 Impervious Area
Subcatchment 4S: New Building (2015)
Runoff
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
0.12
0.115
0.11
0.105
0.1
0.095
0.09
0.085
0.08
0.075
0.07
0.065
0.06
0.055
0.05
0.045
0.04
0.035
0.03
0.025
0.02
0.015
0.01
0.005
0
Type II 24-hr WQv
Rainfall=0.90"
Runoff Area=1.100 ac
Runoff Volume=0.007 af
Runoff Depth=0.08"
Tc=0.0 min
CN=82
0.11 cfs
Type II 24-hr WQv Rainfall=0.90"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 38HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 5S: New Buildings (2016)
Tc Path:- From ROW along driveway entrance over grass to pavement- Over pavement into catch basin (CB-9)- CB-9 to Pond
[49] Hint: Tc<2dt may require smaller dt
Runoff = 0.58 cfs @ 11.96 hrs, Volume= 0.029 af, Depth= 0.15"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsType II 24-hr WQv Rainfall=0.90"
Area (ac) CN Description
1.684 98 Paved parking & roofs0.300 74 >75% Grass cover, Good, HSG C0.344 39 >75% Grass cover, Good, HSG A
2.328 86 Weighted Average0.644 Pervious Area1.684 Impervious Area
Tc Length Slope Velocity Capacity Description(min) (feet) (ft/ft) (ft/sec) (cfs)
0.7 60 0.0050 1.44 Shallow Concentrated Flow, Shallow ConcentratedPaved Kv= 20.3 fps
3.0 380 0.0022 2.13 1.67 Circular Channel (pipe), 12" pipe flowDiam= 12.0" Area= 0.8 sf Perim= 3.1' r= 0.25'n= 0.013 Corrugated PE, smooth interior
3.7 440 Total
Type II 24-hr WQv Rainfall=0.90"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 39HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Subcatchment 5S: New Buildings (2016)
Runoff
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
0.6
0.55
0.5
0.45
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
Type II 24-hr WQv
Rainfall=0.90"
Runoff Area=2.328 ac
Runoff Volume=0.029 af
Runoff Depth=0.15"
Flow Length=440'
Tc=3.7 min
CN=86
0.58 cfs
Type II 24-hr WQv Rainfall=0.90"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 40HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Reach 1R: Grass Swale
Inflow Area = 1.100 ac, 35.45% Impervious, Inflow Depth = 0.08" for WQv eventInflow = 0.11 cfs @ 11.93 hrs, Volume= 0.007 afOutflow = 0.02 cfs @ 13.09 hrs, Volume= 0.007 af, Atten= 82%, Lag= 69.6 min
Routing by Stor-Ind+Trans method, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsMax. Velocity= 0.12 fps, Min. Travel Time= 42.0 minAvg. Velocity = 0.07 fps, Avg. Travel Time= 77.7 min
Peak Storage= 48 cf @ 12.39 hrs, Average Depth at Peak Storage= 0.07'Bank-Full Depth= 1.50', Capacity at Bank-Full= 8.47 cfs
2.00' x 1.50' deep channel, n= 0.150 Sheet flow over Short GrassSide Slope Z-value= 4.0 '/' Top Width= 14.00'Length= 310.0' Slope= 0.0065 '/'Inlet Invert= 423.00', Outlet Invert= 421.00'
‡
Reach 1R: Grass Swale
InflowOutflow
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
0.12
0.1150.11
0.1050.1
0.095
0.090.085
0.080.075
0.070.065
0.06
0.0550.05
0.0450.04
0.035
0.030.025
0.020.015
0.010.005
0
Inflow Area=1.100 ac
Avg. Depth=0.07'
Max Vel=0.12 fps
n=0.150
L=310.0'
S=0.0065 '/'
Capacity=8.47 cfs
0.11 cfs
0.02 cfs
Type II 24-hr WQv Rainfall=0.90"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 41HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Reach 2R: S/N 001
[40] Hint: Not Described (Outflow=Inflow)
Inflow Area = 7.298 ac, 65.28% Impervious, Inflow Depth > 0.21" for WQv eventInflow = 0.06 cfs @ 18.96 hrs, Volume= 0.127 afOutflow = 0.06 cfs @ 18.96 hrs, Volume= 0.127 af, Atten= 0%, Lag= 0.0 min
Routing by Stor-Ind+Trans method, Time Span= 5.00-100.00 hrs, dt= 0.05 hrs
Reach 2R: S/N 001
InflowOutflow
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
0.065
0.06
0.055
0.05
0.045
0.04
0.035
0.03
0.025
0.02
0.015
0.01
0.005
0
Inflow Area=7.298 ac0.06 cfs
0.06 cfs
002.1
002.1
Type II 24-hr WQv Rainfall=0.90"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 42HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Pond 1P: Upper Pond
Inflow Area = 5.528 ac, 63.93% Impervious, Inflow Depth = 0.19" for WQv eventInflow = 1.73 cfs @ 11.95 hrs, Volume= 0.087 afOutflow = 0.05 cfs @ 17.66 hrs, Volume= 0.085 af, Atten= 97%, Lag= 342.1 minPrimary = 0.05 cfs @ 17.66 hrs, Volume= 0.085 af
Routing by Stor-Ind method, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsStarting Elev= 418.50' Surf.Area= 0 sf Storage= 12,807 cfPeak Elev= 418.77' @ 17.66 hrs Surf.Area= 0 sf Storage= 14,972 cf (2,165 cf above start)
Plug-Flow detention time= (not calculated: initial storage excedes outflow)Center-of-Mass det. time= 768.0 min ( 1,654.3 - 886.3 )
Volume Invert Avail.Storage Storage Description
#1 415.00' 73,395 cf Custom Stage Data Listed below
Elevation Inc.Store Cum.Store(feet) (cubic-feet) (cubic-feet)
415.00 0 0416.00 307 307417.00 2,631 2,938418.00 5,848 8,786419.00 8,042 16,828420.00 10,401 27,229421.00 12,679 39,908422.00 16,351 56,259422.50 17,136 73,395
Device Routing Invert Outlet Devices
#1 Primary 418.50' 2.0" Vert. Orifice/Grate C= 0.600 #2 Primary 420.50' 24.0" Horiz. Orifice/Grate Limited to weir flow C= 0.600 #3 Primary 421.00' 5.0' long x 3.0' breadth Broad-Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 Coef. (English) 2.44 2.58 2.68 2.67 2.65 2.64 2.64 2.68 2.68 2.72 2.81 2.92 2.97 3.07 3.32
Primary OutFlow Max=0.05 cfs @ 17.66 hrs HW=418.77' (Free Discharge)1=Orifice/Grate (Orifice Controls 0.05 cfs @ 2.08 fps)2=Orifice/Grate ( Controls 0.00 cfs)3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs)
Type II 24-hr WQv Rainfall=0.90"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 43HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Pond 1P: Upper Pond
InflowPrimary
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
1
0
Inflow Area=5.528 ac
Peak Elev=418.77'
Storage=14,972 cf
1.73 cfs
0.05 cfs
Type II 24-hr WQv Rainfall=0.90"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 44HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Pond 2P: Lower Pond
Inflow Area = 7.298 ac, 65.28% Impervious, Inflow Depth > 0.21" for WQv eventInflow = 0.95 cfs @ 11.96 hrs, Volume= 0.128 afOutflow = 0.06 cfs @ 18.96 hrs, Volume= 0.127 af, Atten= 94%, Lag= 419.7 minPrimary = 0.06 cfs @ 18.96 hrs, Volume= 0.127 af
Routing by Stor-Ind method, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsStarting Elev= 413.00' Surf.Area= 0 sf Storage= 2,771 cfPeak Elev= 413.42' @ 18.96 hrs Surf.Area= 0 sf Storage= 4,021 cf (1,250 cf above start)
Plug-Flow detention time= 1,429.2 min calculated for 0.064 af (50% of inflow)Center-of-Mass det. time= 318.3 min ( 1,704.9 - 1,386.6 )
Volume Invert Avail.Storage Storage Description
#1 411.00' 15,572 cf Custom Stage Data Listed below
Elevation Inc.Store Cum.Store(feet) (cubic-feet) (cubic-feet)
411.00 0 0412.00 935 935413.00 1,836 2,771414.00 2,971 5,742415.00 4,244 9,986416.00 5,586 15,572
Device Routing Invert Outlet Devices
#1 Primary 413.00' 2.0" Vert. Orifice/Grate C= 0.600 #2 Primary 414.70' 24.0" Horiz. Orifice/Grate Limited to weir flow C= 0.600 #3 Primary 415.00' 5.0' long x 3.0' breadth Broad-Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 Coef. (English) 2.44 2.58 2.68 2.67 2.65 2.64 2.64 2.68 2.68 2.72 2.81 2.92 2.97 3.07 3.32
Primary OutFlow Max=0.06 cfs @ 18.96 hrs HW=413.42' (Free Discharge)1=Orifice/Grate (Orifice Controls 0.06 cfs @ 2.80 fps)2=Orifice/Grate ( Controls 0.00 cfs)3=Broad-Crested Rectangular Weir ( Controls 0.00 cfs)
Type II 24-hr WQv Rainfall=0.90"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 45HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Pond 2P: Lower Pond
InflowPrimary
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
1
0
Inflow Area=7.298 ac
Peak Elev=413.42'
Storage=4,021 cf
0.95 cfs
0.06 cfs
3S
Drains off site
2P
Lower Pond
Drainage Diagram for Morse Lot 6 PostDev 070716Prepared by Ruggiano Engineering, Printed 7/12/2016
HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Subcat Reach Pond Link
Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 2HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Area Listing (selected nodes)
Area
(acres)
CN Description
(subcatchment-numbers)
0.750 74 >75% Grass cover, Good, HSG C (3S)
0.770 98 Paved parking & roofs (3S)
1.520 TOTAL AREA
Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 3HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Soil Listing (selected nodes)
Area
(acres)
Soil
Goup
Subcatchment
Numbers
0.000 HSG A
0.000 HSG B
0.750 HSG C 3S
0.000 HSG D
0.770 Other 3S
1.520 TOTAL AREA
Type II 24-hr 100 Year Rainfall=5.20"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 4HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Time span=5.00-100.00 hrs, dt=0.05 hrs, 1901 pointsRunoff by SCS TR-20 method, UH=SCS
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
Runoff Area=1.520 ac 50.66% Impervious Runoff Depth>3.65"Subcatchment 3S: Drains off site Flow Length=202' Tc=2.8 min CN=86 Runoff=10.20 cfs 0.463 af
Peak Elev=415.63' Storage=13,481 cf Inflow=24.62 cfs 2.340 afPond 2P: Lower Pond Outflow=21.35 cfs 2.335 af
Total Runoff Area = 1.520 ac Runoff Volume = 0.463 af Average Runoff Depth = 3.65"49.34% Pervious = 0.750 ac 50.66% Impervious = 0.770 ac
Type II 24-hr 100 Year Rainfall=5.20"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 5HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 3S: Drains off site
[49] Hint: Tc<2dt may require smaller dt
Runoff = 10.20 cfs @ 11.93 hrs, Volume= 0.463 af, Depth> 3.65"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsType II 24-hr 100 Year Rainfall=5.20"
Area (ac) CN Description
0.770 98 Paved parking & roofs0.750 74 >75% Grass cover, Good, HSG C
1.520 86 Weighted Average0.750 Pervious Area0.770 Impervious Area
Tc Length Slope Velocity Capacity Description(min) (feet) (ft/ft) (ft/sec) (cfs)
0.6 32 0.0200 0.89 Sheet Flow, Sheet flowSmooth surfaces n= 0.011 P2= 2.10"
1.4 120 0.0050 1.44 Shallow Concentrated Flow, Shallow ConcentratedPaved Kv= 20.3 fps
0.8 50 0.0200 0.99 Shallow Concentrated Flow, Shallow Conc-grassShort Grass Pasture Kv= 7.0 fps
2.8 202 Total
Subcatchment 3S: Drains off site
Runoff
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
11
10
9
8
7
6
5
4
3
2
1
0
Type II 24-hr 100 Year
Rainfall=5.20"
Runoff Area=1.520 ac
Runoff Volume=0.463 af
Runoff Depth>3.65"
Flow Length=202'
Tc=2.8 min
CN=86
10.20 cfs
Type II 24-hr 100 Year Rainfall=5.20"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 6HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Summary for Pond 2P: Lower Pond
[82] Warning: Early inflow requires earlier time span
Inflow Area = 7.298 ac, 65.28% Impervious, Inflow Depth > 3.85" for 100 Year eventInflow = 24.62 cfs @ 12.00 hrs, Volume= 2.340 afOutflow = 21.35 cfs @ 12.05 hrs, Volume= 2.335 af, Atten= 13%, Lag= 3.2 minPrimary = 21.35 cfs @ 12.05 hrs, Volume= 2.335 af
Routing by Stor-Ind method, Time Span= 5.00-100.00 hrs, dt= 0.05 hrsStarting Elev= 413.00' Surf.Area= 0 sf Storage= 2,771 cfPeak Elev= 415.63' @ 12.05 hrs Surf.Area= 0 sf Storage= 13,481 cf (10,710 cf above start)
Plug-Flow detention time= 329.6 min calculated for 2.271 af (97% of inflow)Center-of-Mass det. time= 199.6 min ( 1,467.6 - 1,268.0 )
Volume Invert Avail.Storage Storage Description
#1 411.00' 15,572 cf Custom Stage Data Listed below
Elevation Inc.Store Cum.Store(feet) (cubic-feet) (cubic-feet)
411.00 0 0412.00 935 935413.00 1,836 2,771414.00 2,971 5,742415.00 4,244 9,986416.00 5,586 15,572
Device Routing Invert Outlet Devices
#1 Primary 413.00' 2.0" Vert. Orifice/Grate C= 0.600 #2 Primary 414.70' 24.0" Horiz. Orifice/Grate Limited to weir flow C= 0.600 #3 Primary 415.00' 5.0' long x 3.0' breadth Broad-Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 Coef. (English) 2.44 2.58 2.68 2.67 2.65 2.64 2.64 2.68 2.68 2.72 2.81 2.92 2.97 3.07 3.32
Primary OutFlow Max=21.30 cfs @ 12.05 hrs HW=415.62' (Free Discharge)1=Orifice/Grate (Orifice Controls 0.17 cfs @ 7.67 fps)2=Orifice/Grate (Orifice Controls 14.54 cfs @ 4.63 fps)3=Broad-Crested Rectangular Weir (Weir Controls 6.60 cfs @ 2.12 fps)
Type II 24-hr 100 Year Rainfall=5.20"Morse Lot 6 PostDev 070716 Printed 7/12/2016Prepared by Ruggiano Engineering
Page 7HydroCAD® 8.50 s/n 003343 © 2007 HydroCAD Software Solutions LLC
Pond 2P: Lower Pond
InflowPrimary
Hydrograph
Time (hours)1009590858075706560555045403530252015105
Flo
w
(cfs
)
26
24
22
20
18
16
14
12
10
8
6
4
2
0
Inflow Area=7.298 ac
Peak Elev=415.63'
Storage=13,481 cf
24.62 cfs
21.35 cfs
SN 003
3S
SN003_Pre-dev
9S
FPW to SN003
10S
Lots 15, 29, 30
12P
Lot 14 Pond (As
Surveyed)
13L
SN 003
Drainage Diagram for 14122.1_StormwaterPrepared by Cross Consulting Engineers, P.C., Printed 8/10/2016HydroCAD® 8.50 s/n 001911 © 2007 HydroCAD Software Solutions LLC
Subcat Reach Pond Link
C
Type II 24-hr 1-Year Rainfall=2.10"14122.1_Stormwater Printed 8/10/2016Prepared by Cross Consulting Engineers, P.C.
Page 2HydroCAD® 8.50 s/n 001911 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 3S: SN003_Pre-dev
Runoff = 9.03 cfs @ 12.36 hrs, Volume= 1.397 af, Depth= 0.31"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-96.00 hrs, dt= 0.02 hrsType II 24-hr 1-Year Rainfall=2.10"
Area (ac) CN Description
3.450 58 Meadow, non-grazed, HSG B42.640 71 Meadow, non-grazed, HSG C8.520 78 Meadow, non-grazed, HSG D0.030 78 Meadow, non-grazed, HSG D
54.640 71 Weighted Average54.640 Pervious Area
Tc Length Slope Velocity Capacity Description(min) (feet) (ft/ft) (ft/sec) (cfs)
7.2 100 0.0490 0.23 Sheet Flow, SheetRange n= 0.130 P2= 2.30"
2.6 200 0.0330 1.27 Shallow Concentrated Flow, ShallowShort Grass Pasture Kv= 7.0 fps
3.1 370 0.0160 1.98 0.99 Trap/Vee/Rect Channel Flow, DitchBot.W=0.00' D=0.50' Z= 2.0 '/' Top.W=2.00'n= 0.035 Earth, dense weeds
3.6 310 0.0050 1.45 1.63 Trap/Vee/Rect Channel Flow, DitchBot.W=0.00' D=0.75' Z= 2.0 '/' Top.W=3.00'n= 0.035 Earth, dense weeds
16.1 1,580 0.0060 1.64 8.19 Trap/Vee/Rect Channel Flow, ChannelBot.W=2.00' D=1.00' Z= 3.0 '/' Top.W=8.00'n= 0.050 Mountain streams w/large boulders
32.6 2,560 Total
Subcatchment 3S: SN003_Pre-dev
Runoff
Hydrograph
Time (hours)9590858075706560555045403530252015105
Flow (cfs)
10
9
8
7
6
5
4
3
2
1
0
Type II 24-hr 1-Year
Rainfall=2.10"
Runoff Area=54.640 ac
Runoff Volume=1.397 af
Runoff Depth=0.31"
Flow Length=2,560'
Tc=32.6 min
CN=71
9.03 cfs
Type II 24-hr 1-Year Rainfall=2.10"14122.1_Stormwater Printed 8/10/2016Prepared by Cross Consulting Engineers, P.C.
Page 3HydroCAD® 8.50 s/n 001911 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 9S: FPW to SN003
Runoff = 11.17 cfs @ 12.34 hrs, Volume= 1.492 af, Depth= 0.40"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-96.00 hrs, dt= 0.02 hrsType II 24-hr 1-Year Rainfall=2.10"
Area (ac) CN Description
3.400 61 >75% Grass cover, Good, HSG B32.840 74 >75% Grass cover, Good, HSG C8.192 80 >75% Grass cover, Good, HSG D0.600 98 Paved parking & roofs
45.032 74 Weighted Average44.432 Pervious Area0.600 Impervious Area
Tc Length Slope Velocity Capacity Description(min) (feet) (ft/ft) (ft/sec) (cfs)
7.2 100 0.0490 0.23 Sheet Flow, SheetRange n= 0.130 P2= 2.30"
2.6 200 0.0330 1.27 Shallow Concentrated Flow, ShallowShort Grass Pasture Kv= 7.0 fps
3.1 370 0.0160 1.98 0.99 Trap/Vee/Rect Channel Flow, DitchBot.W=0.00' D=0.50' Z= 2.0 '/' Top.W=2.00'n= 0.035 Earth, dense weeds
3.6 310 0.0050 1.45 1.63 Trap/Vee/Rect Channel Flow, DitchBot.W=0.00' D=0.75' Z= 2.0 '/' Top.W=3.00'n= 0.035 Earth, dense weeds
16.1 1,580 0.0060 1.64 8.19 Trap/Vee/Rect Channel Flow, ChannelBot.W=2.00' D=1.00' Z= 3.0 '/' Top.W=8.00'n= 0.050 Mountain streams w/large boulders
32.6 2,560 Total
Subcatchment 9S: FPW to SN003
Runoff
Hydrograph
Time (hours)9590858075706560555045403530252015105
Flow (cfs)
12
11
10
9
8
7
6
5
4
3
2
1
0
Type II 24-hr 1-Year
Rainfall=2.10"
Runoff Area=45.032 ac
Runoff Volume=1.492 af
Runoff Depth=0.40"
Flow Length=2,560'
Tc=32.6 min
CN=74
11.17 cfs
Type II 24-hr 1-Year Rainfall=2.10"14122.1_Stormwater Printed 8/10/2016Prepared by Cross Consulting Engineers, P.C.
Page 4HydroCAD® 8.50 s/n 001911 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 10S: Lots 15, 29, 30
Runoff = 3.76 cfs @ 12.25 hrs, Volume= 0.402 af, Depth= 0.50"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-96.00 hrs, dt= 0.02 hrsType II 24-hr 1-Year Rainfall=2.10"
Area (ac) CN Description
8.169 74 >75% Grass cover, Good, HSG C0.118 80 >75% Grass cover, Good, HSG D1.315 98 Paved parking & roofs
9.602 77 Weighted Average8.287 Pervious Area1.315 Impervious Area
Tc Length Slope Velocity Capacity Description(min) (feet) (ft/ft) (ft/sec) (cfs)
20.6 100 0.0120 0.08 Sheet Flow, SheetGrass: Dense n= 0.240 P2= 2.30"
2.5 170 0.0050 1.14 Shallow Concentrated Flow, ShallowUnpaved Kv= 16.1 fps
4.7 1,050 0.0040 3.76 6.64 Circular Channel (pipe), PipeDiam= 18.0" Area= 1.8 sf Perim= 4.7' r= 0.38'n= 0.013 Corrugated PE, smooth interior
27.8 1,320 Total
Subcatchment 10S: Lots 15, 29, 30
Runoff
Hydrograph
Time (hours)9590858075706560555045403530252015105
Flow (cfs)
4
3
2
1
0
Type II 24-hr 1-Year
Rainfall=2.10"
Runoff Area=9.602 ac
Runoff Volume=0.402 af
Runoff Depth=0.50"
Flow Length=1,320'
Tc=27.8 min
CN=77
3.76 cfs
Type II 24-hr 1-Year Rainfall=2.10"14122.1_Stormwater Printed 8/10/2016Prepared by Cross Consulting Engineers, P.C.
Page 5HydroCAD® 8.50 s/n 001911 © 2007 HydroCAD Software Solutions LLC
Summary for Pond 12P: Lot 14 Pond (As Surveyed)
Inflow Area = 9.602 ac, 13.70% Impervious, Inflow Depth = 0.50" for 1-Year eventInflow = 3.76 cfs @ 12.25 hrs, Volume= 0.402 afOutflow = 0.18 cfs @ 19.03 hrs, Volume= 0.402 af, Atten= 95%, Lag= 406.5 minPrimary = 0.18 cfs @ 19.03 hrs, Volume= 0.402 af
Routing by Stor-Ind method, Time Span= 5.00-96.00 hrs, dt= 0.02 hrsStarting Elev= 427.92' Surf.Area= 1,303 sf Storage= 1,846 cfPeak Elev= 430.67' @ 19.03 hrs Surf.Area= 6,339 sf Storage= 12,541 cf (10,695 cf above start)
Plug-Flow detention time= 926.7 min calculated for 0.360 af (89% of inflow)Center-of-Mass det. time= 775.1 min ( 1,672.7 - 897.6 )
Volume Invert Avail.Storage Storage Description
#1 428.00' 24,580 cf Basin (Surveyed) (Prismatic) Listed below (Recalc)#2 424.00' 976 cf 2.00'W x 2.00'L x 4.00'H Forebay Z=3.0#3 424.00' 976 cf 2.00'W x 2.00'L x 4.00'H Micropool Z=3.0
26,532 cf Total Available Storage
Elevation Surf.Area Inc.Store Cum.Store(feet) (sq-ft) (cubic-feet) (cubic-feet)
428.00 3,020 0 0429.00 3,706 3,363 3,363430.00 4,450 4,078 7,441431.00 5,255 4,853 12,294432.00 6,118 5,687 17,980433.00 7,081 6,600 24,580
Device Routing Invert Outlet Devices
#1 Primary 427.92' 24.0" x 232.9' long Outlet Pipe CPP, square edge headwall, Ke= 0.500 Outlet Invert= 427.92' S= -0.0001 '/' Cc= 0.900 n= 0.010
#2 Device 1 427.56' 2.0" Vert. Orifice/Grate C= 0.600 #3 Device 1 430.66' 12.0" Vert. Orifice/Grate C= 0.600 #4 Device 1 432.31' 2.00' x 2.00' Horiz. Orifice/Grate Limited to weir flow C= 0.600 #5 Primary 432.65' 5.0' long (Profile 3) Spillway
Head (feet) 0.49 0.98 1.48 Coef. (English) 2.86 3.17 3.24
Primary OutFlow Max=0.17 cfs @ 19.03 hrs HW=430.67' (Free Discharge)1=Outlet Pipe (Passes 0.17 cfs of 12.31 cfs potential flow)
2=Orifice/Grate (Orifice Controls 0.17 cfs @ 7.98 fps)3=Orifice/Grate (Orifice Controls 0.00 cfs @ 0.29 fps)4=Orifice/Grate ( Controls 0.00 cfs)
5=Spillway ( Controls 0.00 cfs)
C
Type II 24-hr 1-Year Rainfall=2.10"14122.1_Stormwater Printed 8/10/2016Prepared by Cross Consulting Engineers, P.C.
Page 6HydroCAD® 8.50 s/n 001911 © 2007 HydroCAD Software Solutions LLC
Pond 12P: Lot 14 Pond (As Surveyed)
InflowPrimary
Hydrograph
Time (hours)9590858075706560555045403530252015105
Flow (cfs)
4
3
2
1
0
Inflow Area=9.602 ac
Peak Elev=430.67'
Storage=12,541 cf
3.76 cfs
0.18 cfs
C
Type II 24-hr 1-Year Rainfall=2.10"14122.1_Stormwater Printed 8/10/2016Prepared by Cross Consulting Engineers, P.C.
Page 7HydroCAD® 8.50 s/n 001911 © 2007 HydroCAD Software Solutions LLC
Summary for Link 13L: SN 003
Inflow Area = 54.634 ac, 3.51% Impervious, Inflow Depth = 0.42" for 1-Year eventInflow = 11.29 cfs @ 12.34 hrs, Volume= 1.894 afPrimary = 11.29 cfs @ 12.34 hrs, Volume= 1.894 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 5.00-96.00 hrs, dt= 0.02 hrs
Link 13L: SN 003
InflowPrimary
Hydrograph
Time (hours)9590858075706560555045403530252015105
Flow (cfs)
12
11
10
9
8
7
6
5
4
3
2
1
0
Inflow Area=54.634 ac
11.29 cfs11.29 cfs
Type II 24-hr 10-Year Rainfall=3.10"14122.1_Stormwater Printed 8/10/2016Prepared by Cross Consulting Engineers, P.C.
Page 8HydroCAD® 8.50 s/n 001911 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 3S: SN003_Pre-dev
Runoff = 32.07 cfs @ 12.31 hrs, Volume= 3.727 af, Depth= 0.82"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-96.00 hrs, dt= 0.02 hrsType II 24-hr 10-Year Rainfall=3.10"
Area (ac) CN Description
3.450 58 Meadow, non-grazed, HSG B42.640 71 Meadow, non-grazed, HSG C8.520 78 Meadow, non-grazed, HSG D0.030 78 Meadow, non-grazed, HSG D
54.640 71 Weighted Average54.640 Pervious Area
Tc Length Slope Velocity Capacity Description(min) (feet) (ft/ft) (ft/sec) (cfs)
7.2 100 0.0490 0.23 Sheet Flow, SheetRange n= 0.130 P2= 2.30"
2.6 200 0.0330 1.27 Shallow Concentrated Flow, ShallowShort Grass Pasture Kv= 7.0 fps
3.1 370 0.0160 1.98 0.99 Trap/Vee/Rect Channel Flow, DitchBot.W=0.00' D=0.50' Z= 2.0 '/' Top.W=2.00'n= 0.035 Earth, dense weeds
3.6 310 0.0050 1.45 1.63 Trap/Vee/Rect Channel Flow, DitchBot.W=0.00' D=0.75' Z= 2.0 '/' Top.W=3.00'n= 0.035 Earth, dense weeds
16.1 1,580 0.0060 1.64 8.19 Trap/Vee/Rect Channel Flow, ChannelBot.W=2.00' D=1.00' Z= 3.0 '/' Top.W=8.00'n= 0.050 Mountain streams w/large boulders
32.6 2,560 Total
Subcatchment 3S: SN003_Pre-dev
Runoff
Hydrograph
Time (hours)9590858075706560555045403530252015105
Flow (cfs)
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
Type II 24-hr 10-Year
Rainfall=3.10"
Runoff Area=54.640 ac
Runoff Volume=3.727 af
Runoff Depth=0.82"
Flow Length=2,560'
Tc=32.6 min
CN=71
32.07 cfs
Type II 24-hr 10-Year Rainfall=3.10"14122.1_Stormwater Printed 8/10/2016Prepared by Cross Consulting Engineers, P.C.
Page 9HydroCAD® 8.50 s/n 001911 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 9S: FPW to SN003
Runoff = 33.04 cfs @ 12.29 hrs, Volume= 3.649 af, Depth= 0.97"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-96.00 hrs, dt= 0.02 hrsType II 24-hr 10-Year Rainfall=3.10"
Area (ac) CN Description
3.400 61 >75% Grass cover, Good, HSG B32.840 74 >75% Grass cover, Good, HSG C8.192 80 >75% Grass cover, Good, HSG D0.600 98 Paved parking & roofs
45.032 74 Weighted Average44.432 Pervious Area0.600 Impervious Area
Tc Length Slope Velocity Capacity Description(min) (feet) (ft/ft) (ft/sec) (cfs)
7.2 100 0.0490 0.23 Sheet Flow, SheetRange n= 0.130 P2= 2.30"
2.6 200 0.0330 1.27 Shallow Concentrated Flow, ShallowShort Grass Pasture Kv= 7.0 fps
3.1 370 0.0160 1.98 0.99 Trap/Vee/Rect Channel Flow, DitchBot.W=0.00' D=0.50' Z= 2.0 '/' Top.W=2.00'n= 0.035 Earth, dense weeds
3.6 310 0.0050 1.45 1.63 Trap/Vee/Rect Channel Flow, DitchBot.W=0.00' D=0.75' Z= 2.0 '/' Top.W=3.00'n= 0.035 Earth, dense weeds
16.1 1,580 0.0060 1.64 8.19 Trap/Vee/Rect Channel Flow, ChannelBot.W=2.00' D=1.00' Z= 3.0 '/' Top.W=8.00'n= 0.050 Mountain streams w/large boulders
32.6 2,560 Total
Subcatchment 9S: FPW to SN003
Runoff
Hydrograph
Time (hours)9590858075706560555045403530252015105
Flow (cfs)
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
Type II 24-hr 10-Year
Rainfall=3.10"
Runoff Area=45.032 ac
Runoff Volume=3.649 af
Runoff Depth=0.97"
Flow Length=2,560'
Tc=32.6 min
CN=74
33.04 cfs
Type II 24-hr 10-Year Rainfall=3.10"14122.1_Stormwater Printed 8/10/2016Prepared by Cross Consulting Engineers, P.C.
Page 10HydroCAD® 8.50 s/n 001911 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment 10S: Lots 15, 29, 30
Runoff = 9.56 cfs @ 12.23 hrs, Volume= 0.913 af, Depth= 1.14"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-96.00 hrs, dt= 0.02 hrsType II 24-hr 10-Year Rainfall=3.10"
Area (ac) CN Description
8.169 74 >75% Grass cover, Good, HSG C0.118 80 >75% Grass cover, Good, HSG D1.315 98 Paved parking & roofs
9.602 77 Weighted Average8.287 Pervious Area1.315 Impervious Area
Tc Length Slope Velocity Capacity Description(min) (feet) (ft/ft) (ft/sec) (cfs)
20.6 100 0.0120 0.08 Sheet Flow, SheetGrass: Dense n= 0.240 P2= 2.30"
2.5 170 0.0050 1.14 Shallow Concentrated Flow, ShallowUnpaved Kv= 16.1 fps
4.7 1,050 0.0040 3.76 6.64 Circular Channel (pipe), PipeDiam= 18.0" Area= 1.8 sf Perim= 4.7' r= 0.38'n= 0.013 Corrugated PE, smooth interior
27.8 1,320 Total
Subcatchment 10S: Lots 15, 29, 30
Runoff
Hydrograph
Time (hours)9590858075706560555045403530252015105
Flow (cfs)
10
9
8
7
6
5
4
3
2
1
0
Type II 24-hr 10-Year
Rainfall=3.10"
Runoff Area=9.602 ac
Runoff Volume=0.913 af
Runoff Depth=1.14"
Flow Length=1,320'
Tc=27.8 min
CN=77
9.56 cfs
Type II 24-hr 10-Year Rainfall=3.10"14122.1_Stormwater Printed 8/10/2016Prepared by Cross Consulting Engineers, P.C.
Page 11HydroCAD® 8.50 s/n 001911 © 2007 HydroCAD Software Solutions LLC
Summary for Pond 12P: Lot 14 Pond (As Surveyed)
Inflow Area = 9.602 ac, 13.70% Impervious, Inflow Depth = 1.14" for 10-Year eventInflow = 9.56 cfs @ 12.23 hrs, Volume= 0.913 afOutflow = 2.79 cfs @ 12.75 hrs, Volume= 0.913 af, Atten= 71%, Lag= 31.4 minPrimary = 2.79 cfs @ 12.75 hrs, Volume= 0.913 af
Routing by Stor-Ind method, Time Span= 5.00-96.00 hrs, dt= 0.02 hrsStarting Elev= 427.92' Surf.Area= 1,303 sf Storage= 1,846 cfPeak Elev= 431.63' @ 12.75 hrs Surf.Area= 7,147 sf Storage= 17,702 cf (15,856 cf above start)
Plug-Flow detention time= 466.3 min calculated for 0.871 af (95% of inflow)Center-of-Mass det. time= 414.1 min ( 1,285.1 - 871.0 )
Volume Invert Avail.Storage Storage Description
#1 428.00' 24,580 cf Basin (Surveyed) (Prismatic) Listed below (Recalc)#2 424.00' 976 cf 2.00'W x 2.00'L x 4.00'H Forebay Z=3.0#3 424.00' 976 cf 2.00'W x 2.00'L x 4.00'H Micropool Z=3.0
26,532 cf Total Available Storage
Elevation Surf.Area Inc.Store Cum.Store(feet) (sq-ft) (cubic-feet) (cubic-feet)
428.00 3,020 0 0429.00 3,706 3,363 3,363430.00 4,450 4,078 7,441431.00 5,255 4,853 12,294432.00 6,118 5,687 17,980433.00 7,081 6,600 24,580
Device Routing Invert Outlet Devices
#1 Primary 427.92' 24.0" x 232.9' long Outlet Pipe CPP, square edge headwall, Ke= 0.500 Outlet Invert= 427.92' S= -0.0001 '/' Cc= 0.900 n= 0.010
#2 Device 1 427.56' 2.0" Vert. Orifice/Grate C= 0.600 #3 Device 1 430.66' 12.0" Vert. Orifice/Grate C= 0.600 #4 Device 1 432.31' 2.00' x 2.00' Horiz. Orifice/Grate Limited to weir flow C= 0.600 #5 Primary 432.65' 5.0' long (Profile 3) Spillway
Head (feet) 0.49 0.98 1.48 Coef. (English) 2.86 3.17 3.24
Primary OutFlow Max=2.80 cfs @ 12.75 hrs HW=431.63' (Free Discharge)1=Outlet Pipe (Passes 2.80 cfs of 18.46 cfs potential flow)
2=Orifice/Grate (Orifice Controls 0.20 cfs @ 9.27 fps)3=Orifice/Grate (Orifice Controls 2.60 cfs @ 3.35 fps)4=Orifice/Grate ( Controls 0.00 cfs)
5=Spillway ( Controls 0.00 cfs)
C
Type II 24-hr 10-Year Rainfall=3.10"14122.1_Stormwater Printed 8/10/2016Prepared by Cross Consulting Engineers, P.C.
Page 12HydroCAD® 8.50 s/n 001911 © 2007 HydroCAD Software Solutions LLC
Pond 12P: Lot 14 Pond (As Surveyed)
InflowPrimary
Hydrograph
Time (hours)9590858075706560555045403530252015105
Flow (cfs)
10
9
8
7
6
5
4
3
2
1
0
Inflow Area=9.602 ac
Peak Elev=431.63'
Storage=17,702 cf
9.56 cfs
2.79 cfs
C
Type II 24-hr 10-Year Rainfall=3.10"14122.1_Stormwater Printed 8/10/2016Prepared by Cross Consulting Engineers, P.C.
Page 13HydroCAD® 8.50 s/n 001911 © 2007 HydroCAD Software Solutions LLC
Summary for Link 13L: SN 003
Inflow Area = 54.634 ac, 3.51% Impervious, Inflow Depth = 1.00" for 10-Year eventInflow = 33.21 cfs @ 12.29 hrs, Volume= 4.562 afPrimary = 33.21 cfs @ 12.29 hrs, Volume= 4.562 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 5.00-96.00 hrs, dt= 0.02 hrs
Link 13L: SN 003
InflowPrimary
Hydrograph
Time (hours)9590858075706560555045403530252015105
Flow (cfs)
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
Inflow Area=54.634 ac
33.21 cfs33.21 cfs