V4 11 Stormwater Report Rev 3 1 26 2023

2 Hydrograph Return Period Recap Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 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 ------ ------- 2.759 ------- ------- 4.321 5.382 ------- 7.302 DA-1A (Roof) 2 SCS Runoff ------ ------- 2.804 ------- ------- 6.540 9.358 ------- 14.72 DA-2 (Pervious) 3 SCS Runoff ------ ------- 3.663 ------- ------- 5.594 6.914 ------- 9.312 DA-2 (Impervious) 4 SCS Runoff ------ ------- 5.185 ------- ------- 11.79 16.74 ------- 26.10 DA-3 (Pervious) 5 SCS Runoff ------ ------- 4.085 ------- ------- 6.239 7.711 ------- 10.39 DA-3 (Impervious) 6 SCS Runoff ------ ------- 0.475 ------- ------- 3.696 6.756 ------- 13.24 DA-4 (Pervious) 7 SCS Runoff ------ ------- 3.240 ------- ------- 4.948 6.116 ------- 8.237 DA-4 (Impervious) 8 Combine 2, 3, ------- 6.202 ------- ------- 11.76 15.84 ------- 23.52 DA-2 9 Combine 4, 5, ------- 8.874 ------- ------- 17.48 23.83 ------- 35.79 DA-3 10 Combine 6, 7, ------- 3.362 ------- ------- 8.123 12.23 ------- 20.65 DA-4 11 Reservoir 10 ------- 1.497 ------- ------- 5.430 9.569 ------- 15.74 Basin #3 12 Reservoir 9 ------- 4.761 ------- ------- 14.78 21.66 ------- 31.90 Basin #2 13 SCS Runoff ------ ------- 4.580 ------- ------- 7.253 9.066 ------- 12.34 DA-1B (Roof) 14 Reservoir 13 ------- 2.090 ------- ------- 8.143 9.263 ------- 12.33 Basin #1B

------- 7.253 9.066 ------- 12.34 DA-1B (Roof) 14 Reservoir 13 ------- 2.090 ------- ------- 8.143 9.263 ------- 12.33 Basin #1B 15 SCS Runoff ------ ------- 0.048 ------- ------- 0.092 0.123 ------- 0.182 DA-1A (Courtyard Pervious) 16 SCS Runoff ------ ------- 0.085 ------- ------- 0.129 0.160 ------- 0.215 DA-1A (Courtyard Impervious) 17 Combine 15, 16 ------- 0.131 ------- ------- 0.221 0.283 ------- 0.397 <no description> 18 Combine 1, 17 ------- 2.890 ------- ------- 4.542 5.665 ------- 7.698 <no description> 19 Reservoir 18 ------- 1.551 ------- ------- 5.092 5.876 ------- 7.726 <no description> 20 Combine 8, 11, 12, ------- 14.72 ------- ------- 39.24 57.06 ------- 86.61 <no description> 14, 19 Proj. file: Proposed Conditions - Green Roof.gpw Friday, 01 / 27 / 2023