Black Rock Dam, Branch Brook
Peak Pool Levels
by Water Year
(1971 - Present)
Drainage Area:  20 sq. miles
Normal Pool:  27 ft.
Gate Invert Elev.:  410 ft. NGVD
1" Runoff =   1,067 ac-ft
Storage at Spillway Crest:   7.8 in. / 8,450 ac-ft

Date	Annual Peak Pool Level (ft)	Storage Utilized
		Inches	Acre-Feet	Percent
14 Sep 1971	35.0	0.2	232	3
18 Mar 1972	52.0	1.0	1,040	12
04 Feb 1973	65.6	2.0	2,125	25
22 Dec 1973	78.5	3.3	3,542	42
28 Sep 1975	71.0	2.2	2,427	29
29 Jan 1976	61.9	1.6	1,786	21
14 Mar 1977	48.1	0.7	801	9
27 Jan 1978	57.7	1.3	1,440	17
08 Mar 1979	78.7	3.3	3,567	42
23 Mar 1980	68.7	2.2	2,435	29
22 Feb 1981	59.0	1.4	1,546	18
07 Jun 1982	84.5	4.0	4,318	51
22 Mar 1983	65.5	1.9	2,116	25
03 Jun 1984	93.4	5.2	5,604	66
28 Sep 1985	48.0	0.7	795	9
28 Jan 1986	63.1	1.7	1,895	22
06 Apr 1987	79.0	3.3	3,605	43
03 Feb 1988	28.8	0.0	45	1
21 Nov 1988	46.5	0.7	717	8
21 Oct 1989	75.0	2.2	2,375	28
05 Mar 1991	34.5	0.2	214	3
07 Jun 1992	32.6	0.1	155	2
29 Mar 1993	56.5	1.2	1,349	16
22 Aug 1994	45.7	0.6	676	8
09 Mar 1995	33.5	0.2	182	2
28 Jan 1996	57.6	1.3	1,433	17
21 Oct 1996	65.1	1.9	2,083	25
10 Mar 1998	41.9	0.5	496	6
17 Sep 1999	51.7	0.9	1,022	12
07 Jun 2000	35.4	0.2	247	3
31 Mar 2001	42.2	0.5	507	6
07 Jun 2002	31.5	0.1	121	1
22 Mar 2003	42.5	0.5	524	6
29 Oct 2003	40.6	0.4	438	5
03 Apr 2005	44.7	0.6	630	7
13 May 2006	61.6	1.6	1,750	21
17 Apr 2007	80.5	3.5	3,791	45
14 Feb 2008	57.4	1.3	1,417	16
31 Jul 2009	39.4	0.4	390	5
31 Mar 2010	63.0	1.8	1,855	22
29 Aug 2011	94.8	5.4	5,821	69
08 Dec 2011	43.0	0.5	542	6
14 Jun 2013	53.4	1.0	1,129	13
01 May 2014	52.8	1.0	1,092	13
10 Dec 2014	36.6	0.3	284	3
25 Feb 2016	36.5	0.3	282	3
07 Apr 2017	31.9	0.1	132	2
13 Jan 2018	42.0	0.5	497	6
22 Dec 2018	59.9	1.5	1,616	19
15 Dec 2019	53.0	1.0	1,103	13
03 Sep 2021	72.8	4.0	2,869	34