Surry Mountain Dam, Ashuelot River
Peak Pool Levels
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 Pool Level (ft)	Storage Utilized
		Inches	Acre-Feet	Percent
1943 1	25.8	0.7	3,801	12
27 Apr 1944	40.2	2.2	11,558	37
22 Mar 1945	38.7	2.0	10,618	34
12 Mar 1946	31.3	1.2	6,422	21
17 Apr 1947	41.5	2.3	12,400	40
29 Mar 1948	57.6	4.7	24,831	80
08 Jan 1949	36.7	1.8	9,410	30
07 Apr 1950	30.1	1.1	5,812	19
10 Apr 1951	50.3	3.5	18,739	60
16 Apr 1952	44.0	2.6	14,086	45
02 Apr 1953	53.8	4.0	21,569	69
21 Apr 1954	28.5	0.9	5,032	16
19 Apr 1955	20.8	0.3	1,814	6
04 May 1956	50.6	3.6	18,975	61
25 Jan 1957	21.0	0.4	1,885	6
26 Apr 1958	43.5	2.6	13,743	44
07 Apr 1959	36.5	1.7	9,292	30
07 Apr 1960	54.8	4.2	22,409	72
28 Apr 1961	24.2	0.6	3,124	10
11 Apr 1962	40.8	2.2	11,944	38
06 Apr 1963	31.3	1.3	6,681	21
16 Apr 1964	32.9	1.4	7,265	23
18 Apr 1965	26.0	0.7	3,887	12
27 Mar 1966	23.0	0.5	2,641	8
30 May 1967	31.0	1.2	6,266	20
25 Mar 1968	44.0	2.6	14,086	45
25 Apr 1969	55.5	4.3	23,006	74
12 Apr 1970	26.0	0.7	3,887	12
16 Apr 1971	22.5	0.5	2,448	8
21 Apr 1972	33.0	1.4	7,318	23
03 Jul 1973	31.6	1.2	6,577	21
24 Dec 1973	43.5	2.6	13,743	44
21 Apr 1975	25.0	0.6	3,124	10
03 Apr 1976	36.4	1.7	9,175	29
16 Mar 1977	45.5	2.8	15,144	49
10 Jan 1978	29.0	1.0	5,270	17
12 Mar 1979	49.6	3.4	18,194	58
14 Apr 1980	36.1	1.7	9,058	29
28 Feb 1981	34.1	1.5	7,921	25
22 Apr 1982	44.0	2.6	14,086	45
23 Mar 1983	34.8	1.6	8,314	27
04 Jun 1984	61.4	5.3	28,274	91
14 Mar 1985	24.1	0.6	3,083	10
22 Mar 1986	37.5	1.9	9,886	32
07 Apr 1987	66.1	SPILLWAY DISCHARGE
29 Mar 1988	31.0	1.2	6,266	20
09 Apr 1989	34.1	1.5	7,921	25
24 Mar 1990	47.6	3.1	16,676	53
26 Dec 1990	24.7	0.6	3,332	11
13 Mar 1992	26.1	0.7	3,932	13
19 Apr 1993	43.9	2.6	14,017	45
18 Apr 1994	42.3	2.4	12,930	41
18 Jan 1995	40.9	2.3	12,008	38
31 Oct 1995	36.9	1.8	9,533	31
22 Apr 1997	30.2	1.1	5,877	19
04 Apr 1998	40.5	2.2	11,745	38
19 Sep 1999	27.8	0.9	4,720	15
11 Apr 2000	23.7	0.5	2,933	9
26 Apr 2001	46.6	3.0	15,909	51
03 Apr 2002	24.6	0.6	3,290	11
01 Apr 2003	39.4	2.1	11,047	35
04 Apr 2004	38.0	1.9	10,169	33
06 Apr 2005	46.9	3.0	15,950	51
17 Oct 2005	63.5	5.7	30,200	96
23 Apr 2007	49.6	3.4	18,194	58
14 Apr 2008	35.0	1.6	8,426	27
03 Aug 2009	36.5	1.8	9,310	29
03 Apr 2010	51.5	3.7	19,666	62
12 Mar 2011	39.0	2.0	10,800	34
31 May 2012	31.8	1.2	6,692	21
05 Jul 2013	43.3	2.5	13,626	43
18 Apr 2014	32.3	1.3	6,966	22
26 Dec 2014	24.8	0.6	3,356	11
27 Feb 2016	33.7	1.4	7,717	24
27 Feb 2017	31.0	1.2	6,241	20
16 Jan 2018	42.3	2.4	12,933	41
07 Nov 2018	41.3	2.3	12,265	39
16 Dec 2019	24.1	0.6	3,069	10
02 Aug 2021	42.2	2.4	12,867	41

Notes:

1.    Missing Date of Peak Pool

2.    Spillway Discharge