Question

Instantaneous unit hydrograph is a hydrograph of
(i) unit duration
(ii) unit rainfall excess
(iii) infinitely small duration
(iv) infinitely small rainfall excess

• A. (i) and (ii)
• B. (i) and (iv)
• C. (ii) and (iii)
• D. (iii) and (iv)

Answer 1

The correct option is C (ii) and (iii)

IUH - hydrograph of direct runoff resulting from a unit depth of effective rainfall in an infinitesimally small period of time