generally useful life of a reservoir is considered terminated when its -gross storage is reduced by _______________ of the design capacity of the reservoir?
Correct answer: B. 80%
- A. 100%
- B. 80%
- C. 50% l
- D. 20%
Explanation
A reservoir is commonly regarded as having reached the end of its useful life when sedimentation has consumed about 80% of its design storage, leaving roughly 20% usable capacity. Thus the reduction, rather than the remaining storage, is 80%.
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