2025 12 19 Stormwater Report Rev 1

3 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 1.749 6 732 7,463 ------ ------ ------ DA-1 Pervious 2 SCS Runoff 7.590 6 732 36,568 ------ ------ ------ DA-1 Impervious 3 SCS Runoff 0.180 6 732 768 ------ ------ ------ DA-2 Pervious 4 SCS Runoff 0.091 6 732 441 ------ ------ ------ DA-2 Impervious 5 Combine 9.339 6 732 44,031 1, 2, ------ ------ DA-1 Combined 6 Combine 0.271 6 732 1,209 3, 4, ------ ------ DA-2 Combined Existing - Current Adjusted.gpw Return Period: 2 Year Tuesday, 12 / 23 / 2025