complete drainage report rev 9

POA-1 NJ DEP 2-hr WQ Rainfall=1.25" 2024-05-12 HydroCad - Proposed POA 1B-1 Prepared by Anderson Consulting Services HydroCAD® 10.20-5c s/n 06666 © 2023 HydroCAD Software Solutions LLC Printed 10/25/2024 Page 146 Summary for Subcatchment 23S: Basin 6 - Perv Runoff = 0.20 cfs @ 1.12 hrs, Volume= Routed to Pond 24P : Basin 6 315 cf, Depth= 0.07" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs NJ DEP 2-hr WQ Rainfall=1.25" Area (sf) 51,219 51,219 CN 74 Description >75% Grass cover, Good, HSG C 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 0.6 40 0.0200 1.19 Sheet Flow, Sheet Flow (A-B) Smooth surfaces n= 0.011 P2= 3.47" 3.0 450 2.50 Direct Entry, Pipe Flow (B-C) 3.6 490 Total Sheet Flow (A-B) Pipe Flow (B-C) Subcatchment 23S: Basin 6 - Perv Subcatchment 23S: Basin 6 - Perv Flow (cfs) Hydrograph 0.22 0.21 0.20 cfs 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 0 2 4 6 Runoff NJ DEP 2-hr WQ Rainfall=1.25" Runoff Area=51,219 sf Runoff Volume=315 cf Runoff Depth=0.07" Flow Length=490' Slope=0.0200 '/' Tc=3.6 min CN=74 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)