Allied & ICAR Exam Bank • ALLIED_1186 NAT • 2 Marks

Section 4: Soil and Water Conservation Engineering

Watershed Morphometry

Subtopic: Circulatory Ratio

Question Statement:

A watershed has basin area $A = 31.42\text{ km}^2$ and perimeter $P = 25.13\text{ km}$. the circularity ratio $R_c$ is:

Answer Key:

0.625

Step-by-Step Solution & Explanation

$R_c = \frac{4 \times \pi \times 31.42}{(25.13)^2} = \frac{394.83}{631.52} \approx 0.6252$.
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