The 'safe yield' of an aquifer is defined as:
Choose the correct answer
Maximum possible pump discharge rate
Maximum long-term withdrawal rate that does not cause undesirable effects (depletion, subsidence, intrusion)
Yield at initial pump capacity
Annual recharge to the aquifer only
Correct Answer
B. Maximum long-term withdrawal rate that does not cause undesirable effects (depletion, subsidence, intrusion)
Why is this the answer?
Safe yield: maximum rate of withdrawal from an aquifer over a long period without causing undesirable effects: land subsidence, saltwater intrusion, unacceptable depletion of stream flow, or mining of water (withdrawal > recharge). Also called sustainable yield. Estimated from long-term water balance and pumping tests.
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