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HomeMy WebLinkAboutSW6210503_Design Calculations (Drawdown)_202111101651 Townsend Estates Drawdown Time Temporary storage volume = Orifice diameter = Area of orifice = Orifice Coefficient (Cd) _ Orifice elevation -- Water elevation --- Driving head (H) _ Discharge (Q) _ Drawdown time = 31856 cf 2.4 in 1 0.0314 sf 0.60 205.50 ft 207.32 ft 0.61 ft 0.1178 cfs 270343 s 75.1 hr 3_1 days 1651 Drawdown.xls Printed 10/5/2021