Council archive · source document
Appendix D- Stormwater Management Plan · MCU23/0078
Plans and drawings: the text below has words only, no drawings.
Very large file (18.3 MB): may take a few minutes to open.
Original PDF page 39, section 1. The text section number identifies this passage in the reader.
24/04/2023 + JOB No:-
INITIAL PEAK FLOW ESTIMATE
Written by BB 31/10/08
Updated by DJK 25/05/20
Job Number: 22159
Job Name: SITE A - Noosa Civic Village Expansion
Designed: VN
Checked: SG IFD Location: Noosaville
TOTAL RUNOFF COEFF. EXISTING TIME OF CONCENTRATION DEVELOPED TIME OF CONCENTRATION
Sub Catchment Area (Ha) Fraction Impervious Runoff Coeficients Calculated C10 Std Inlet Time 0 Std Inlet Time 5
No. Existing Proposed Existing Proposed Existing Proposed Existing Proposed
SHEET FLOW
SHEET FLOW
1 0.477 0.477 0% 0% 0.53 0.53 Site Slope (%) 2.7 Site Slope (%) 0
2 3.243 3.243 0% 100% 0.53 0.90 Flow Length (m) 200 Flow Length (m) 0
3 0.000 0.000 0% 0% 0.00 0.00 Horton's "n" 0.05 Horton's "n" 0
4 0.000 0.000 0% 0% 0.00 0.00 Travel Time (min) 25.65 Travel Time (min) 0.00
5 0.000 0.000 0% 0% 0.00 0.00
3.72 3.72 0.53 0.85 Travel Length (m) 0 Travel Length (m) 200
CHANNEL/PI
CHANNEL/PI
PE FLOW
PE FLOW
Raw IFD data has been obtained from the Bureau of Meteorology (BOM) website. Fall (m) 0 Fall (m) 5.6
Travel Time (min) 0 Travel Time (min) 2
Multiplier 0 Multiplier 1
Travel Time (min) 0 Travel Time (min) 2
Total Time (Tc) 25.7 Total Time (Tc) 7.0
PEAK RUNOFF CALCULATIONS PEAK FLOWS FOR FREQUENT EVENTS
Rainfall Intensity (mm/hr) Coeficient of Runoff Peak Runoff Rates (m^3/s) ARI Event % of Q1 Peak discharge (m^/s)
AEP Event % ARI Event yr Existing Proposed Existing Proposed Existing Proposed yr Existing Proposed
63% 1 65 113 0.42 0.68 0.286 0.800 1mth 25% 0.072 0.200
39% 2 74 129 0.45 0.72 0.344 0.963 2mth 40% 0.114 0.320
18% 5 100 174 0.50 0.81 0.520 1.459 3mth 50% 0.143 0.400
10% 10 117 204 0.53 0.85 0.641 1.798 4mth 60% 0.172 0.480
5% 20 133 232 0.56 0.90 0.765 2.149 6mth 75% 0.215 0.600
2% 50 154 268 0.61 0.98 0.968 2.719 9mth 90% 0.257 0.720
1% 100 169 295 0.64 1.00 1.111 3.049 12mth 100% 0.286 0.800
^ 1
See the original
The page text is free to read. Viewing or downloading an original file needs an account.
Log in to see the originalUsed in these records
Appendix D- Stormwater Management Plan.PDFRelated documentApplication case desk ↗
About this file
- File size
- 18.3 MB (very large file)
- File type
No other editions are linked here.
Original file
Log in to download the original file
The download may take a few minutes. On mobile data, it is best to wait for Wi-Fi.