Stormwater Management System Drawdown

Stormwater Management System Drawdown

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This Girls Fall Casual Dress project concerns the computations required to determine the drawdown for the retention/detention of ponds.Drawdown refers to the volume of water in a pond that decreases as the water flows out.The falling head equation has many applications and can be used to calculate the drawdown of a pond through various shaped DIRECT LEAVE-IN COND openings.

In particular, we analyze four outflow structures: a rectangular-notch weir, a v-notch weir, a round orifice, and an underdrain.For each instance, we modify the falling head equation to reflect the shape of the respective orifice.