Question

The firm yield of 80% means that the river historic flow data showed that this flow magnitude is enough to supply 80% of the flow and the reservoir will need to be supplied the remaining 20% of the flow. True or False? Explain.

Answer 1

True, the remaining 20% of flow will be supplied by a reservoir created across a river by erecting a dam.

Because the lag of 20% should be fulfilled from other sources like ground water sources or by creating an artificial reservoir to store water and yield accordingly to fulfill the demand. Sine the firm yield already lags by 20% so it becomes necessary to manage the remaining yield and can be achieved by creating a reservoir across a river to store water and yield accordingly as per need. A reservoir is a body of water created by erecting a solid dam across a river to store water.

Hence the above statement is right