POOL STAGE FREQUENCIES

LITTLEVILLE DAM

Middle Branch Westfield River , Connecticut

(1938,1955,1967-2002)

(D.A. = 52.3 square miles) 

FREQUENCY

Pool Stage

STORAGE

(yr)

2

5

10

50

100

 

 

(Ft-NGVD)

535.0

544.5

551.0

565.0

571.0

(acre-feet)

 5,500

 9,000

11,600

17,900

20,700

 

(inches)

2.0

3.2

4.2

6.4

7.4

 

(percent full)

23

39

50

78

90

 

    Permanent Pool Level  =  518.0 Ft.-NGVD

    Spillway Crest  =  576.0 Ft.-NGVD (approx. 150-yr Freq) 

    Gate Invert  =  432.0 Ft.-NGVD