251203_42 ERW_Stormwater Report

NOAA 24-hr D 10-Year Rainfall=6.37" 250903_42 ERW Waystone - Future Rainfall Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Printed 11/25/2025 Page 24 Summary for Reach DP2-EX: Inflow Area = Inflow = Outflow = 0.423 ac, 0.00% Impervious, Inflow Depth = 3.50" for 10-Year event 1.63 cfs @ 12.14 hrs, Volume= 0.123 af 1.63 cfs @ 12.14 hrs, Volume= 0.123 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.05 hrs Reach DP2-EX: Hydrograph Inflow Outflow 1.63 cfs Flow (cfs) 1.63 cfs Inflow Area=0.423 ac 1 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 Time (hours)