Drainage Report

Basin 2-6 without exfiltration Proposed basin 2-6 R5 NOAA 24-hr D 2-Year Rainfall=3.44" Prepared by Anderson Consulting Services Printed 10/29/2023 HydroCAD® 10.20-3f s/n 06666 © 2023 HydroCAD Software Solutions LLC Page 8 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=3.21" Flow Length=1,762' Tc=10.0 min CN=98/98 Runoff=5.13 cfs 0.492 af Subcatchment 42S: basin 2-6 pre-development Runoff Area=80,223 sf Runoff Depth=0.97" Flow Length=230' Tc=17.3 min CN=70/0 Runoff=1.32 cfs 0.149 af Pond 37P: Pond 2-6 Peak Elev=542.06' Storage=16,822 cf Inflow=5.13 cfs 0.492 af Outflow=0.18 cfs 0.167 af Total Runoff Area = 3.683 ac Runoff Volume = 0.641 af Average Runoff Depth = 2.09"