The discharge Q through a rectangular notch/weir is proportional to:
AH^2
BH^(1/2)
CH^(5/2)
DH^(3/2)
Explanation
Discharge Q over a sharp-crested rectangular weir or notch is given by Q = (2/3) * Cd * b * √(2g) * H^(3/2), establishing that discharge is directly proportional to H^(3/2).

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