Question

Bank storage in a dam reservoir _________________

(a) increases the compound reservoir capacity

(b) decreases the computed reservoir capacity

(c) sometimes increases and sometimes decreases the computed reservoir capacity

(d) has no effect on computed reservoir capacity

This question was posed to me during an interview.

The question is from Capacity and Area Elevation Curves of a Reservoir Site topic in portion Reservoirs and Dam Reservoirs Planning of Irrigation Engineering

Answer 1

The correct choice is (a) increases the compound reservoir capacity

To explain: The certain amount of water that seeps into the permeable reservoir banks when the reservoir is filled up is known as bank storage. This water comes out as soon as the reservoir gets depleted and it effectively increases the capacity of the reservoir.