complete drainage report rev 9

POA-1 2024-05-12 HydroCad - Proposed POA 1B-1 NOAA 24-hr D 100-Year Rainfall=8.66" Prepared by Anderson Consulting Services HydroCAD® 10.20-5c s/n 06666 © 2023 HydroCAD Software Solutions LLC Printed 10/25/2024 Page 111 Summary for Subcatchment 28S: undetained impervious Runoff = 0.06 cfs @ 12.09 hrs, Volume= Routed to Link 25L : POA 1 210 cf, Depth= 8.42" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs NOAA 24-hr D 100-Year Rainfall=8.66" Area (sf) 300 300 * CN 98 Description non pavement impervious 100.00% Impervious Area Subcatchment 28S: undetained impervious Hydrograph 0.07 Runoff 0.065 0.06 cfs NOAA 24-hr D 100-Year Rainfall=8.66" Runoff Area=300 sf Runoff Volume=210 cf Runoff Depth=8.42" Tc=0.0 min CN=98 0.06 0.055 0.05 Flow (cfs) 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 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)