The dependable yield (firm yield) of a reservoir is the:
Choose the correct answer
Average annual yield over many years
Minimum volume that can be supplied in any year, even the driest year on record, without running the reservoir dry
Maximum possible release
Sum of all annual inflows
Correct Answer
B. Minimum volume that can be supplied in any year, even the driest year on record, without running the reservoir dry
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Dependable (firm) yield = quantity of water that can be reliably supplied from the reservoir for any year with specified dependability (e.g., 75% or 90% dependability). Determined using sequent peak algorithm or mass curve (Rippl) analysis.
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