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Discharge over an ogee weir remains the same as that of:
1. Drowned weir
2. Triangular weir
3. Sharp crested weir
4. Cipoletti weir

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Correct Answer - Option 4 : Cipoletti weir

Explanation:

Different types of the weir and their discharge formulas;

Ogee weir:

\(Q = \frac{2}{3}{C_d}L\sqrt {2g} {H^{3/2}}\)

Cippoletti weir:

\(Q = \frac{2}{3}{C_d}L\sqrt {2g} {H^{3/2}}\)

Drowned weir:

\(Q = \frac{2}{3}{C_d}L\sqrt {2g} {\left( {{H_1} - {H_2}} \right)^{3/2}}\)

Triangular weir:

\(Q = \frac{8}{{15}}{C_d}L\sqrt {2g} \tan \frac{\theta }{2}{H^{5/2}}\)

Where,

Q = Discharge

L = Length of the weir

H = Depth of water

C= Coefficient of discharge

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