Graham Place Subdivision <br />Type IA 24-hr 10-Year Rainfall=4.46"5468_HydroCAD_2-17-26_BAW <br /> Printed 7/9/2026Prepared by A&O Engineering LLC <br />Page 9HydroCAD® 10.20-8a s/n 04993 © 2025 HydroCAD Software Solutions LLC <br />Subcatchment 1489S: Existing Conditions <br />Subcatchment 1489S: Existing Conditions <br />Runoff <br />Hydrograph <br />Time (hours) <br />454035302520151050Flow (cfs)0.65 <br />0.6 <br />0.55 <br />0.5 <br />0.45 <br />0.4 <br />0.35 <br />0.3 <br />0.25 <br />0.2 <br />0.15 <br />0.1 <br />0.05 <br />0 <br />Runoff=0.62 cfs <br />Type IA 24-hr <br />10-Year Rainfall=4.46" <br />Runoff Area=51,005 sf <br />Runoff Volume=0.243 af <br />Runoff Depth=2.49" <br />Flow Length=210' <br />Slope=0.0140 '/' <br />Tc=13.1 min <br />CN=77/98 <br /> 0.62 cfs