V4 11 Stormwater Report Rev 3 1 26 2023

69 Hydrograph Summary Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 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 7.302 3 723 28,248 ------ ------ ------ DA-1A (Roof) 2 SCS Runoff 14.72 3 729 59,533 ------ ------ ------ DA-2 (Pervious) 3 SCS Runoff 9.312 3 723 37,250 ------ ------ ------ DA-2 (Impervious) 4 SCS Runoff 26.10 3 729 105,761 ------ ------ ------ DA-3 (Pervious) 5 SCS Runoff 10.39 3 723 41,548 ------ ------ ------ DA-3 (Impervious) 6 SCS Runoff 13.24 3 729 54,258 ------ ------ ------ DA-4 (Pervious) 7 SCS Runoff 8.237 3 723 32,952 ------ ------ ------ DA-4 (Impervious) 8 Combine 23.52 3 726 96,782 2, 3, ------ ------ DA-2 9 Combine 35.79 3 726 147,309 4, 5, ------ ------ DA-3 10 Combine 20.65 3 726 87,210 6, 7, ------ ------ DA-4 11 Reservoir 15.74 3 732 87,208 10 419.95 10,462 Basin #3 12 Reservoir 31.90 3 729 147,308 9 417.96 13,372 Basin #2 13 SCS Runoff 12.34 3 723 47,277 ------ ------ ------ DA-1B (Roof) 14 Reservoir 12.33 3 726 47,277 13 407.97 3,031 Basin #1B 15 SCS Runoff 0.182 3 723 638 ------ ------ ------ DA-1A (Courtyard Pervious) 16 SCS Runoff 0.215 3 723 860 ------ ------ ------ DA-1A (Courtyard Impervious) 17 Combine 0.397 3

DA-1A (Courtyard Pervious) 16 SCS Runoff 0.215 3 723 860 ------ ------ ------ DA-1A (Courtyard Impervious) 17 Combine 0.397 3 723 1,497 15, 16 ------ ------ <no description> 18 Combine 7.698 3 723 29,746 1, 17 ------ ------ <no description> 19 Reservoir 7.726 3 723 29,745 18 421.99 1,506 <no description> 20 Combine 86.61 3 726 408,320 8, 11, 12, ------ ------ <no description> 14, 19 Proposed Conditions - Green Roof.gpw Return Period: 100 Year Friday, 01 / 27 / 2023