V4 11 Stormwater Report Rev 3 1 26 2023

32 Pond Report Hydraflow Hydrographs Extension for Autodesk® Civil 3D® by Autodesk, Inc. v2023 Wednesday, 11 / 2 / 2022 Pond No. 1 - Basin #1 Pond Data Contours -User-defined contour areas. Average end area method used for volume calculation. Begining Elevation = 415.00 ft Stage / Storage Table Stage (ft) Elevation (ft) Contour area (sqft) Incr. Storage (cuft) Total storage (cuft) 0.00 415.00 1,040 0 0 1.00 416.00 1,900 1,470 1,470 2.00 417.00 2,550 2,225 3,695 3.00 418.00 3,170 2,860 6,555 4.00 419.00 3,800 3,485 10,040 5.00 420.00 4,800 4,300 14,340 Culvert / Orifice Structures Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise (in) = 3.00 0.00 0.00 0.00 Crest Len (ft) = 16.00 0.00 0.00 0.00 Span (in) = 3.00 0.00 0.00 0.00 Crest El. (ft) = 419.00 0.00 0.00 0.00 No. Barrels = 1 0 0 0 Weir Coeff. = 3.33 3.33 3.33 3.33 Invert El. (ft) = 415.00 0.00 0.00 0.00 Weir Type = Rect --- --- --- Length (ft) = 0.00 0.00 0.00 0.00

0.00 Weir Type = Rect --- --- --- Length (ft) = 0.00 0.00 0.00 0.00 Multi-Stage = No No No No Slope (%) = 0.00 0.00 0.00 n/a N-Value = .013 .013 .013 n/a Orifice Coeff. = 0.60 0.60 0.60 0.60 Exfil.(in/hr) = 0.000 (by Contour) Multi-Stage = n/a No No No TW Elev. (ft) = 0.00 Note: Culvert/Orifice outflows are analyzed under inlet (ic) and outlet (oc) control. Weir risers checked for orifice conditions (ic) and submergence (s). Stage / Storage / Discharge Table Stage Storage Elevation Clv A Clv B Clv C PrfRsr Wr A Wr B Wr C Wr D Exfil User Total ft cuft ft cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs cfs 0.00 0 415.00 0.00 --- --- --- 0.00 --- --- --- --- --- 0.000 1.00 1,470 416.00 0.22 ic --- --- --- 0.00 --- --- --- --- --- 0.221 2.00 3,695 417.00 0.32 ic --- --- --- 0.00 --- --- --- --- --- 0.324 3.00 6,555 418.00 0.40 ic --- --- --- 0.00 --- --- --- --- --- 0.401 4.00 10,040 419.00 0.47 ic --- --- --- 0.00 --- --- --- --- --- 0.465 5.00 14,340 420.00 0.52 ic --- --- ---

0.00 --- --- --- --- --- 0.465 5.00 14,340 420.00 0.52 ic --- --- --- 53.28 --- --- --- --- --- 53.80