Stormwater Management Plan 2016 Appendices

APPENDIX 12

Existing characteristics of lower Brown Hill Creek

Segment Location Chainage* Segment

Length

Invert *

(mAHD) Channel Description

Channel

Depth* Grade

Current

Capacity*

Manning's

Roughness*

Reserve

Width

Vegetation

Description Planning Zone

Land

Ownership

Care and

Custody

DS US M DS US m % m3/s m

BH1

Keswick Creek

Confluence to

Watson Ave/

Beare Ave

16860 16450 410 4.9 6.9 Concrete lined channel, 3 m

base , 1 in 1.5 batters 2 0.48 40 0.014 Airport Land

No vegetation

within creek Airport

Federal

Government

(Leased to

Adelaide

Airport Ltd)

SA

Water

BH2 Watson Ave

Bridge 16450 16440 10 6.9 7.1

Vehicle bridge over concrete

lined channel 2 5.00 20 0.014 N/A N/A

Airport/

Residential CWT

SA

Water

BH3 Watson Ave to

Harvey Ave 16440 16035 405 7.1 9

Concrete lined channel, 2m

wide base, 1:1.1 batters 2 0.48 20 0.014 10m

Some trees

overhanging

channel

Residential/Small

Section Private CWT

SA

Water

BH4 Harvey Ave Bridge 16035 16025 10 9.1 9.2 Vehicle bridge over concrete

lined channel 2.1 1.67 25 0.014 N/A N/A Residential CWT

SA

Water

Segment Location Chainage* Segment

Length

Invert *

(mAHD)

Channel Description Channel

Depth*

Grade Current

Capacity*

Manning's

Roughness*

Reserve Width Vegetation Description Planning

Zone

Land

Ownership

Care and

Custody

DS US m DS US

m % m3/s

m

BH5 Parallel to Debra Ct 16025 15865 160 9.2 9.9 Concrete-lined channel,

1.8m wide base, 1:1 batters 2 0.44 25 0.014 10

NE side lined with pine

trees. Residential CWT SA Water

BH6 Debra Ct to Marion

Rd 15865 15760 105 9.9 10.2

Concrete-lined channel,

1.8m wide base, 1:1 batters 2.3 0.30 35 0.014 10

Some vegetation on

northern side of

channel.

Residential CWT SA Water

BH7 Marion Rd Bridge 15760 15740 20 10.2 10.4 Vehicle bridge over

concrete lined channel 1.7 2.50 15 0.014 N/A N/A Residential CWT DPTI

BH8 Concrete Channel US

of Marion Rd 15740 15575 165 10.4 11.1

Concrete-lined channel,

1.9m wide base, 1:1 batters 2 0.42 15 0.014 12m

Minimal within

channel reserve, some

overhanging trees.

Residential CWT SA Water

BH9 End of Concrete to

Packard St 15575 15415 160 11.1 11.6

Rock-lined base 3.2m wide,

1:1 earth/rock/retaining

wall batters

2.2 0.31 20 0.045 base,

0.07 sides 12m Some smaller trees Residential CWT CWT

BH10 Packard St Bridge 15415 15413 2 11.6 11.6 Pedestrian bridge over

earth/rock channel 2.1 0.00 15

0.045 base,

0.08 sides N/A N/A Residential CWT CWT

Segment Location Chainage* Segment

Length

Invert *

(mAHD)

Channel Description Channel

Depth*

Grade Current

Capacity*

Manning's

Roughness*

Reserve

Width

Vegetation Description Planning

Zone

Land

Ownership

Care and

Custody

DS US m DS US

m % m3/s

m

BH11 Packard St to

Birdwood Tce 15413 15200 213 11.6 12.8

Rock-lined base 1.6m wide,

1:2.5 earth/rock batters 2.5 0.56 15

0.045 base,

0.08 sides 12m

2 significant trees. Some

areas of dense vegetation. Residential CWT CWT

BH12 Birdwood Tce Bridge 15200 15180 20 12.8 12.9 2 x 3.6m wide x 2.22m high

culverts - 0.53 30 0.014 N/A N/A Residential CWT CWT

BH13 Birdwood Tce to

Gray St 15180 15005 175 13.1 13.9

Rock-lined base 5m wide,

1:2 earth/rock batters 3 0.45 35

0.045 base,

0.06 sides 12.5m

Some areas of dense

vegetation. Residential CWT CWT

BH14 Gray St Bridge 15005 15000 5 13.9 14 Pedestrian bridge over

earth/rock channel 3 2.00 40

0.045 base,

0.06 sides N/A N/A Residential CWT CWT

BH15 Gray St to Private

Property 15000 14940 60 14 13.8

Rock-lined base 2m wide,

1:1 earth batters 3.5 -0.35 25

0.045 base,

0.12 sides 12 Moderately vegetated Residential CWT CWT

BH16 Parallel to Daly St

(Private Property) 14940 14860 80 13.8 14.45

Rock-lined base 2.5m wide,

1:0.6 earth batters 3 0.81 20 0.06 0

Moderately vegetated

(exotic), 3 significant trees Residential CWT CWT

Segment Location Chainage* Segment

Length

Invert *

(mAHD)

Channel Description Channel

Depth*

Grade Current

Capacity*

Manning's

Roughness*

Reserve

Width

Vegetation Description Planning

Zone

Land

Ownership

Care and

Custody

DS US m DS US

m % m3/s

m

BH17 Private Property to

Daly St 14860 14740 120 14.45 15.4

Rock-lined base 2m wide,

1:1.5 earth/rock batters 3 0.88 20

0.045 base,

0.08 sides

12.5 East-

West Section,

28 North-

South Section

Vegetation on banks Residential Private

(Various) CWT

BH18 Daly St Bridge 14740 14730 10 15.4 15.5 Corrugated domed tunnel

2.3m high 3.7m wide - 1.00 20

0.045 base,

0.08 sides N/A N/A Residential CWT CWT

BH19 Grassmere Reserve 14730 14500 230 15.5 16.7

4.5m wide earth/ rock-lined

base width, 1:2.5 earth

batters

3 0.53 15 0.045 base,

0.06 sides

34m

(excluding

road reserve)

10 significant trees.

Heavily vegetated in

channel and Council

reserve.

Residential CWT CWT

BH20 Warwick Ave Bridge 14500 14495 5 16.7 16.7 Pedestrian bridge over

earth/rock channel 2.8 0.00 35

0.045 base,

0.06 sides N/A N/A Residential CWT CWT

BH21 Warwick Ave to

Concrete Lining 14495 14220 275 16.7 18.1

Rock-lined base 3.5m wide,

1:1.5 earth/rock batters 3.3 0.50 20

0.045 base,

0.08 sides 12

1 significant tree. Areas

of dense vegetation on

creek banks.

Residential CWT CWT

BH22 Start of Concrete to

Beauchamp St 14220 14140 80 18.1 18

Concrete/rock base 1m

wide, 1:1 concrete batters 4.3 -0.13 >40

0.02 base,

0.018 sides 12

Some vegetation in

creek reserve Residential CWT CWT

Segment Location Chainage* Segment

Length

Invert *

(mAHD)

Channel Description Channel

Depth*

Grade Current

Capacity*

Manning's

Roughness*

Reserve Width Vegetation Description Planning

Zone

Land

Ownership

Care and

Custody

DS US m DS US

m % m3/s

m

BH23 Beauchamp St

Footbridge 14140 14138 2 18 18

Pedestrian bridge over

concrete channel, some local

rocks

Unknown 0.00 N/A 0.02 base,

0.018 sides N/A N/A Residential CWT CWT

BH24 Beauchamp St

to South Rd 14138 14000 138 18 20.8

Concrete/rock base 1m

wide, 1:1.5 concrete batters 3.2 3.73 40

0.02 base,

0.018 sides 12 Sparse vegetation Residential CWT CWT

BH25 South Rd

Bridge 14000 13945 55 20.8 21.1

2 x 4.2m wide x 2.44m high

culverts - 0.56 40 0.015 12 N/A Residential CWT DPTI

BH26 South Rd to

Farnham Rd 13945 13700 245 21.1 22.6

3.5m wide earth base,

mostly 1:1 earth batters.

Some retaining walls.

2.9 0.51 25 0.045 base,

0.08 sides 12

5 significant trees.

Relatively dense

vegetation, some large

trees rooted in banks.

Residential CWT CWT

BH27 Farnham Rd

Bridge 13700 13690 10 22.6 22.8

4.6m wide x 2.53 high

culvert - 5.00 25

0.045 base,

0.08 sides N/A N/A Residential CWT CWT

BH28 Farnham Rd

to Anzac Hwy 13690 13550 140 22.8 23.2

4m wide earth/rock channel,

1:0.7 batters. Some retaining

walls.

2.6 0.29 20 0.045 base,

0.08 sides

12 (except short

wider section

adj Farnham Rd)

Relatively dense

vegetation, some large

trees rooted in banks.

Residential CWT CWT