Drainage Report

Basin 2-6 without exfiltration Proposed basin 2-6 R5 NOAA 24-hr D 100-Year Rainfall=8.66" Prepared by Anderson Consulting Services Printed 10/29/2023 HydroCAD® 10.20-3f s/n 06666 © 2023 HydroCAD Software Solutions LLC Page 28 Time span=0.00-72.00 hrs, dt=0.05 hrs, 1441 points Runoff by SCS TR-20 method, UH=SCS, Split Pervious/Imperv. Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 36S: Basin 2-6 Runoff Area=80,223 sf Runoff Depth=8.42" Flow Length=1,762' Tc=10.0 min CN=98/98 Runoff=13.04 cfs 1.292 af Subcatchment 42S: basin 2-6 pre-development Runoff Area=80,223 sf Runoff Depth=5.04" Flow Length=230' Tc=17.3 min CN=70/0 Runoff=7.47 cfs 0.773 af Pond 37P: Pond 2-6 Peak Elev=543.84' Storage=36,022 cf Inflow=13.04 cfs 1.292 af Outflow=1.27 cfs 0.966 af Total Runoff Area = 3.683 ac Runoff Volume = 2.065 af Average Runoff Depth = 6.73"