Question

If the flood discharge flowing in a river is $6400m^3/s$, then its wetted perimeter as per Lacey's theory is likely to be

• A. 400 m
• B. 380 m
• C. 360 m
• D. 320 m

Answer 1

The correct option is B 380 m

$P=4.75\sqrt{Q}=4.75\sqrt{6400}=380m$