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Type II 24-hr 10-Year Rainfall=4.26"21308 - PROPOSED <br /> Printed 7/15/2021Prepared by {enter your company name here} <br />Page 22HydroCAD® 10.10-6a s/n 02202 © 2020 HydroCAD Software Solutions LLC <br />Summary for Subcatchment PR1: PR1 (DRAINS TO 1P) <br />Runoff = 7.92 cfs @ 11.97 hrs, Volume= 0.433 af, Depth= 3.80" <br /> Routed to Pond 1P : FILTRATION BASIN <br />Runoff by SCS TR-20 method, UH=SCS, Weighted-Q, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs <br />Type II 24-hr 10-Year Rainfall=4.26" <br />Area (sf) CN Description <br />51,989 98 Paved parking, HSG D <br />7,539 80 >75% Grass cover, Good, HSG D <br />59,528 Weighted Average <br />7,539 12.66% Pervious Area <br />51,989 87.34% Impervious Area <br />Tc Length Slope Velocity Capacity Description <br />(min) (feet) (ft/ft) (ft/sec) (cfs) <br />6.0 Direct Entry, <br />Subcatchment PR1: PR1 (DRAINS TO 1P) <br />Runoff <br />Hydrograph <br />Time (hours) <br />2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)8 <br />7 <br />6 <br />5 <br />4 <br />3 <br />2 <br />1 <br />0 <br />Type II 24-hr <br />10-Year Rainfall=4.26" <br />Runoff Area=59,528 sf <br />Runoff Volume=0.433 af <br />Runoff Depth=3.80" <br />Tc=6.0 min <br />CN=WQ <br />7.92 cfs