POOL STAGE FREQUENCIES

WEST HILL DAM

West River, Massachusetts

(1955, 1962-1998)

(D.A. = 27.9 square miles) 

FREQUENCY

POOL STAGE

STORAGE

(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