251203_42 ERW_Stormwater Report

251202_42 ERW Waystone - Future Rainfall NOAA 24-hr D 25-Year Rainfall=6.44" Prepared by Colliers Engineering & Design HydroCAD® 10.20-5c s/n 04431 © 2023 HydroCAD Software Solutions LLC Printed 12/3/2025 Page 21 Pond 1P: BASIN - FAILURE Hydrograph 13 Inflow Area=2.619 ac Peak Elev=17.80' Storage=0.332 af 12 11 10 9 Flow (cfs) Inflow Primary 11.97 cfs 8 7 6 5.27 cfs 5 4 3 2 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)