Data is updated every year about October/November time period



Surry Mountain Dam, Ashuelot River
Peak Project Releases
by Water Year
(1943 - Present)
Drainage Area:  100 sq. miles
Normal Pool:  15 ft. (Summer), 18 ft. (Winter)
Gate Invert Elev.:  485 ft. NGVD
1" Runoff =   5,333 ac-ft
Storage at Spillway Crest:   5.9 in. / 31,694 ac-ft


Date Annual Peak
Release (cfs)
1943 1  
29 Apr 1944 1,050
25 Mar 1945 1,250
21 Mar 1946 942
29 Apr 1947 759
02 Apr 1948 1,000
13 Jan 1949 986
  
09 Apr 1950 1,090
13 Dec 1950 1,010
11 Nov 1951 840
02 Apr 1953 910
09 Dec 1953 820
15 Apr 1955 840
09 May 1956 994
28 Jan 1957 579
17 Apr 1958 1,000
07 Apr 1959 1,160
  
28 Oct 1959 1,320
03 May 1961 945
11 Apr 1962 1,260
10 Apr 1963 1,050
20 Apr 1964 1,140
20 Apr 1965 818
27 Mar 1966 825
06 Apr 1967 1,000
23 Mar 1968 1,120
20 Apr 1969 1,160
  
17 Apr 1970 916
15 Apr 1971 1,050
19 Apr 1972 1,150
20 Mar 1973 1,110
04 Jan 1974 1,100
29 Sep 1975 939
07 Apr 1976 1,080
21 Mar 1977 1,140
20 Oct 1977 1,130
30 Mar 1979 1,140
  
16 Apr 1980 945
02 Mar 1981 892
26 Apr 1982 1,000
13 Apr 1983 930
07 Jun 1984 1,050
14 Mar 1985 804
30 Mar 1986 1,090
07 Apr 1987 2,260
30 Mar 1988 1,040
10 Apr 1989 929
  
26 Mar 1990 1,040
13 Nov 1990 691
07 Oct 1991 767
03 Apr 1993 1,085
19 Apr 1994 1,155
21 Mar 1995 606
03 Nov 1995 1,101
09 Apr 1997 1,012
03 Apr 1998 869
23 Mar 1999 930
  
29 Mar 2000 1,066
19 Dec 2000 1,157
03 Apr 2002 824
02 Apr 2003 1,120
07 Apr 2004 944
06 Apr 2005 1,010
16 Oct 2005 1,240
26 Apr 2007 1,100
10 Mar 2008 1,040
02 Apr 2009 970
  
05 Apr 2010 1,225
23 Aug 2011 1,210
04 Oct 2011 844
01 Feb 2013 1,040
16 Jan 2014 944
16 Apr 2015 881
27 Feb 2016 1,180
02 Mar 2017 1,260
25 Jan 2018 1,210
08 Nov 2018 1,210
  
11 Dec 2019 1,127
28 Dec 2020 1,216

Notes:
1.    Missing Date of Peak Release