The construction of impounding reservoir is required when

1.	The construction of impounding reservoir is required when
A.	average annual flow in the stream is lower than average demand
B.	the rate of flow in the stream, in dry season in more than the demand
C.	the rate of flow in the stream, in dry season is less than the demand
D.	the rate of flow in the stream is equal to the demand
Answer» D. the rate of flow in the stream is equal to the demand

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The construction of impounding reservoir is required when

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