Allied & ICAR Exam Bank • ALLIED_0441 NAT • 2 Marks

Section 4: Soil and Water Conservation Engineering

Hydrology and Runoff

Subtopic: Hydrograph Analysis and Watershed Routing

Question Statement:

In Clark's IUH method, a catchment is conceptualized as a linear channel in series with a linear reservoir of storage constant $K = 4.0\text{ hours}$. In Clark's IUH method, the routing factor $C$ for time step $\Delta t = 1.0\text{ hour}$ is (rounded off to two decimal places):

Answer Key:

0.22

Step-by-Step Solution & Explanation

$C = \frac{1.0}{4.0 + 0.5(1.0)} = \frac{1.0}{4.5} = 0.2222 \approx 0.22$.
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