Question

Which one of the following constitute the basic assumption of Unit Hydrograph theory?

• A. Non-linear response and time invariance
• B. Non- linear time variance and linear response
• C. Linear response and linear time variance
• D. Time invariance and linear response

Answer 1

The correct option is D Time invariance and linear response

Time invariance and linear response are the two basic assumptions of UH-theory. Other assumptions are:
(i) Rainfall excess occurs uniformly over the basin
(ii) The distribution of storm over the basin is uniform.