## Rectangular Sharp-Crested Weir

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Figure 5-5: Rectangular Sharp-Crested WeirThe discharge over an unsubmerged rectangular sharp-crested weir is defined as:

(5.36)

i = 0 corresponds to the case of a

suppressedrectangular weir, for which the channel width is equal to the weir opening length, and yields the equation:(5.37)

i = 2 corresponds to the case of a

contractedrectangular weir.

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