Question

What is the approximate value of Ryve’s coefficient for combined catchment having limited areas near hills?

(a) 6.5

(b) 8.5

(c) 10.2

(d) Up to 40

I got this question during an online interview.

The doubt is from Tank or Surplus Escape Weirs Design in chapter River Navigation & Tank Irrigation of Irrigation Engineering

Answer 1

Right answer is (c) 10.2

To elaborate: For areas within 80 km from the east coast, the value of constant is taken as 6.5 and for areas within 80 to 160 km from the east coast; the value is taken as 8.5. In the case of limited areas near hills, the value of the coefficient is 10.2 and the actual observed values are always up to 40.