ZB 22 13 2023 03 Drainage Statement

3 Hydrograph Summary Report Hydraflow Hydrographs by Intelisolve v9.1 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 2.696 1 725 9,778 ---- ------ ------ Existing Site (Impervious) 2 SCS Runoff 0.224 1 726 740 ---- ------ ------ Existing Site (Pervious) 3 Combine 2.913 1 725 10,518 1, 2 ------ ------ Existing Total 5 SCS Runoff 2.343 1 725 8,497 ---- ------ ------ Proposed Site (Impervious) 6 SCS Runoff 0.460 1 726 1,463 ---- ------ ------ Proposed Site (Pervious) 7 Combine 2.795 1 726 9,960 5, 6 ------ ------ Proposed Total 2023-04-03 2, 10, 100 yr.gpw Return Period: 2 Year Wednesday, Apr 5, 2023