V4 11 Stormwater Report Rev 3 1 26 2023

31 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Wednesday, 11 / 2 / 2022 Hyd. No. 17 Basin #1 Hydrograph type = Reservoir Peak discharge = 1.473 cfs Storm frequency = 2 yrs Time to peak = 12.75 hrs Time interval = 3 min Hyd. volume = 28,403 cuft Inflow hyd. No. = 16 - To Basin #1 Max. Elevation = 419.06 ft Reservoir name = Basin #1 Max. Storage = 10,296 cuft Storage Indication method used. Basin #1 Q (cfs) Q (cfs) Hyd. No. 17 -- 2 Year 7.00 7.00 6.00 6.00 5.00 5.00 4.00 4.00 3.00 3.00 2.00 2.00 1.00 1.00 0.00 0.00 0 3 6 9 12 15 18 21 24 27 30 33

0.00 0 3 6 9 12 15 18 21 24 27 30 33 Time (hrs) Hyd No. 17 Hyd No. 16 Total storage used = 10,296 cuft