Drainage Report

Basin 2-6 without exfiltration Proposed basin 2-6 R5 NOAA 24-hr D 10-Year Rainfall=5.22" Prepared by Anderson Consulting Services Printed 10/29/2023 HydroCAD® 10.20-3f s/n 06666 © 2023 HydroCAD Software Solutions LLC Page 18 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=4.98" Flow Length=1,762' Tc=10.0 min CN=98/98 Runoff=7.83 cfs 0.765 af Subcatchment 42S: basin 2-6 pre-development Runoff Area=80,223 sf Runoff Depth=2.20" Flow Length=230' Tc=17.3 min CN=70/0 Runoff=3.23 cfs 0.338 af Pond 37P: Pond 2-6 Peak Elev=542.57' Storage=22,303 cf Inflow=7.83 cfs 0.765 af Outflow=0.68 cfs 0.439 af Total Runoff Area = 3.683 ac Runoff Volume = 1.103 af Average Runoff Depth = 3.59"