2022 10 Drainage Statement Signed

2 Hydrograph Return Period Recap Hydraflow Hydrographs by Intelisolve v9.1 Hyd. Hydrograph Inflow Peak Outflow (cfs) Hydrograph No. type Hyd(s) description (origin) 1-Yr 2-Yr 3-Yr 5-Yr 10-Yr 25-Yr 50-Yr 100-Yr 1 SCS Runoff ------- ------- 2.723 ------- ------- 4.157 ------- ------- 6.918 Existing Site (Impervious) 2 SCS Runoff ------- ------- 0.221 ------- ------- 0.532 ------- ------- 1.222 Existing Site (Pervious) 3 Combine 1, 2 ------- 2.944 ------- ------- 4.689 ------- ------- 8.140 Existing Total 5 SCS Runoff ------- ------- 2.463 ------- ------- 3.761 ------- ------- 6.259 Proposed Site (Impervious) 6 SCS Runoff ------- ------- 0.423 ------- ------- 0.882 ------- ------- 1.839 Proposed Site (Pervious) 7 Combine 5, 6 ------- 2.886 ------- ------- 4.643 ------- ------- 8.098 Proposed Total Proj. file: 2021-11-01 2, 10, 100 yr.gpw Monday, Oct 24, 2022