2025 12 19 Stormwater Report Rev 1

25 Hydrograph Summary Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2025 Hyd. Hydrograph Peak Time Time to Hyd. Inflow Maximum Total Hydrograph No. type flow interval Peak volume hyd(s) elevation strge used Description (origin) (cfs) (min) (min) (cuft) (ft) (cuft) 1 SCS Runoff 8.338 6 732 36,465 ------ ------ ------ DA-1 Pervious 2 SCS Runoff 18.87 6 732 94,005 ------ ------ ------ DA-1 Impervious 3 SCS Runoff 0.734 6 732 3,211 ------ ------ ------ DA-2 Pervious 4 SCS Runoff 0.244 6 732 1,217 ------ ------ ------ DA-2 Impervious 5 Combine 27.21 6 732 130,470 1, 2, ------ ------ DA-1 Combined 6 Combine 0.978 6 732 4,428 3, 4, ------ ------ DA-2 Combined Proposed - Current Adjusted.gpw Return Period: 100 Year Tuesday, 12 / 23 / 2025