For a flood control reservoir, the effective storage is equal to$? – McqOptions

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1.	For a flood control reservoir, the effective storage is equal to$?
A.	useful storage ‚Äö√Ñ√¨ valley storage
B.	useful storage + surcharge storage
C.	useful storage + surcharge storage + valley storage
D.	useful storage + surcharge storage -valley storage
Answer» E.

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