Question

The ordinates of a 4-hour unit hydrograph is given below. The equilibrium discharge of the S-curve (in $m^3/sec$) constructed from this UHG will be?

$\begin{array}{ccccccc}\text{Time (hr)}& 0& 4& 8& 12& 16& 20\\ \text{Ordinate}& 0& 34& 120& 82& 20& 0\\ \left(m^3/sec\right)& & & & & & \end{array}$

• A. 120
• B. 188
• C. 236
• D. 256

Answer 1

The correct option is D 256

$\begin{array}{cccc}\text{Time}& \text{4h UH}& \text{Addition}& \text{S-curve}\\ 0& 0& -& 0\\ 4& 34& 0& 34\\ 8& 120& 34& 154\\ 12& 82& 154& 236\\ 16& 20& 236& 256\\ 20& 0& 236& 256\end{array}$