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Attachment 2 - Stormwater Management Plan · 131998.981126.5
Plans and drawings: the text below has words only, no drawings.
PRE DEVELOPMENT noosa 2-Year Duration=6 min, Inten=153.3 mm/hr
Prepared by HP Inc. Printed 2/09/2022
HydroCAD® 10.00-26 s/n 05328 © 2020 HydroCAD Software Solutions LLC Page 5
Time span=0.00-3.00 hrs, dt=0.01 hrs, 301 points
Runoff by Rational method, Rise/Fall=1.0/1.7 xTc
Reach routing by Stor-Ind method - Pond routing by Stor-Ind method
Subcatchment 1S: Existing Equivalent Runoff Area=509.0 m² 0.00% Impervious Runoff Depth=12 mm
Tc=6.0 min C=0.59 Runoff=0.01280 m³/s 0.006 Ml
Subcatchment 2S: Existing shed and Runoff Area=101.0 m² 0.00% Impervious Runoff Depth=17 mm
Tc=6.0 min C=0.83 Runoff=0.00357 m³/s 0.002 Ml
Reach 4R: DN450 SW Pipe Inflow=0.01638 m³/s 0.008 Ml
Outflow=0.01638 m³/s 0.008 Ml
Total Runoff Area = 0.0610 ha Runoff Volume = 0.008 Ml Average Runoff Depth = 13 mm
100.00% Pervious = 0.0610 ha 0.00% Impervious = 0.0000 ha
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