POOL STAGE FREQUENCIES WEST HILL DAM West River, Massachusetts (1955, 1962-1998) (D.A. = 27.9 square miles) |
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FREQUENCY |
POOL STAGE |
STORAGE |
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(yr) 2 5 10 20 50 100 200
|
(ft) 13.5 19.0 22.0 24.7 27.8 30.0 32.0
|
(acre-feet) 2,135 4,270 5,970 7,700 10,415 12,440 14,700
|
(inches) 1.4 2.9 4.0 5.2 7.0 8.3 9.8
|
(percent full) 17 34 48 62 84 100 100+ |
Permanent Pool = None Spillway Crest = 30.0 ft. Gate Invert = 234.0 ft-NGVD |