complete drainage report rev 9

POA-2 2024-05-12 HydroCad - Proposed POA 2B-1 NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services HydroCAD® 10.20-5c s/n 06666 © 2023 HydroCAD Software Solutions LLC Printed 10/25/2024 Page 35 Summary for Subcatchment 35S: DA 2 Und - Imp Runoff = 3.41 cfs @ 12.17 hrs, Volume= Routed to Link 34L : DA 2 Undetained 14,033 cf, Depth= 3.21" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-80.00 hrs, dt= 0.04 hrs NOAA 24-hr D 2-Year Rainfall=3.44" Area (sf) 18,404 33,009 1,100 52,513 52,513 CN 98 98 98 98 Description Paved parking, HSG C Paved parking, HSG D Roofs, HSG D Weighted Average 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.5 100 0.0500 0.18 Sheet Flow, Sheet Flow (A-B) Grass: Dense n= 0.240 P2= 3.47" 0.3 60 0.0600 3.94 Shallow Concentrated Flow, SCF (B-C) Unpaved Kv= 16.1 fps 9.8 160 Total Sheet Flow (A-B) Subcatchment SCF 35S: (B-C) DA 2 Und - Imp