Drainage Report

Basin 2-1 Proposed Basin 2-1 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 13 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 33S: All basin's 2 undetained Runoff Area=34,308 sf Runoff Depth=2.54" Flow Length=36' Slope=0.1600 '/' Tc=10.0 min CN=74/0 Runoff=1.98 cfs 0.167 af Subcatchment 34S: Pre-dev basin 2 All Runoff Area=465,453 sf Runoff Depth=2.20" Flow Length=1,360' Tc=31.9 min CN=70/0 Runoff=13.90 cfs 1.960 af Subcatchment 40S: Basin 2-1 Runoff Area=26,074 sf Runoff Depth=2.76" Flow Length=190' Tc=10.0 min CN=76/98 Runoff=1.62 cfs 0.138 af Pond 41P: Pond 2-1 Peak Elev=547.31' Storage=2,643 cf Inflow=1.62 cfs 0.138 af Outflow=0.44 cfs 0.094 af Total Runoff Area = 12.072 ac Runoff Volume = 2.264 af Average Runoff Depth = 2.25"