Blackwater Dam, Blackwater River
Peak Pool Levels
by Water Year
(1941 - Present)
Drainage Area:  128 sq. miles
Normal Pool:  516 ft. NGVD
Gate Invert Elev.:  515 ft. NGVD
1" Runoff =   6,827 ac-ft
Storage at Spillway Crest:   6.7 in. / 46,000 ac-ft

Date	Annual Peak Pool Level (ft)	Storage Utilized
		Inches	Acre-Feet	Percent
1941
1942
1943
27 Jun 1944	538.4	0.4	2,808	6
23 Mar 1945	540.0	0.5	3,340	7
09 Dec 1945	538.8	0.4	2,936	6
14 Apr 1947	540.8	0.5	3,644	8
24 Mar 1948	544.0	0.8	5,340	12
02 Jan 1949	533.8	0.2	1,558	3
07 Apr 1950	539.3	0.5	3,102	7
05 Apr 1951	553.2	2.3	15,900	35
09 Apr 1952	551.2	1.9	12,880	28
31 Mar 1953	560.0	4.4	30,300	66
13 May 1954	549.0	1.4	9,800	21
15 Aug 1955	534.3	0.2	1,672	4
02 May 1956	548.1	1.3	8,756	19
01 Mar 1957	521.4	0.0	126	0
25 Apr 1958	544.5	0.8	5,680	12
06 Apr 1959	546.9	1.1	7,553	16
08 Apr 1960	554.0	2.5	17,300	38
24 Apr 1961	529.0	0.1	770	2
04 Apr 1962	547.7	1.2	8,340	18
08 Oct 1962	542.0	0.6	4,180	9
17 Apr 1964	545.9	1.0	6,695	15
19 Apr 1965	527.5	0.1	588	1
28 Mar 1966	532.4	0.2	1,276	3
05 Apr 1967	544.8	0.9	5,884	13
25 Mar 1968	548.8	1.4	9,568	21
24 Apr 1969	561.5	5.0	34,250	74
13 Feb 1970	540.2	0.5	3,416	7
05 May 1971	533.5	0.2	1,495	3
06 May 1972	539.3	0.5	3,102	7
03 Jul 1973	549.0	1.4	9,800	21
24 Dec 1973	542.0	0.6	4,180	9
22 Mar 1975	538.0	0.4	2,680	6
04 Apr 1976	543.7	0.8	5,154	11
16 Mar 1977	551.7	2.0	13,580	30
18 May 1978	536.0	0.3	2,100	5
27 Mar 1979	544.5	0.8	5,680	12
12 Apr 1980	540.5	0.5	3,530	8
27 Feb 1981	547.0	1.1	7,640	17
20 Apr 1982	542.0	0.6	4,180	9
22 Mar 1983	547.4	1.2	8,040	17
05 Jun 1984	556.3	3.2	21,800	47
15 Mar 1985	533.8	0.2	1,558	3
30 Jan 1986	547.0	1.1	7,640	17
09 Apr 1987	564.1	6.0	40,860	89
01 May 1988	541.0	0.5	3,720	8
09 Apr 1989	543.0	0.7	4,720	10
13 Aug 1990	545.2	0.9	6,170	13
03 May 1991	539.0	0.4	3,000	7
29 Mar 1992	538.5	0.4	2,840	6
15 Apr 1993	550.0	1.6	11,150	24
11 Apr 1994	541.5	0.6	3,950	9
23 Apr 1995	540.1	0.5	3,378	7
19 Apr 1996	550.0	1.6	11,208	24
24 Oct 1996	550.1	1.6	11,237	24
02 Apr 1998	548.0	1.3	8,675	19
19 Sep 1999	541.3	0.6	3,840	8
11 Apr 2000	541.2	0.6	3,826	8
27 Apr 2001	549.6	1.5	10,570	23
17 Apr 2002	539.0	0.4	3,000	7
30 Mar 2003	540.2	0.5	3,410	7
04 Apr 2004	544.9	0.9	5,966	13
05 Apr 2005	549.0	1.4	9,800	21
18 May 2006	562.9	5.6	38,200	83
20 Apr 2007	554.6	2.7	18,440	40
20 Apr 2008	543.3	0.7	4,906	11
08 Apr 2009	542.0	0.6	4,191	9
02 Apr 2010	546.6	1.1	7,316	16
19 Apr 2011	544.1	0.8	5,400	12
21 Apr 2012	531.9	0.2	1,190	3
21 Apr 2013	534.0	0.2	1,612	3
17 Apr 2014	538.6	0.4	2,872	7
18 Apr 2015	536.6	0.3	2,262	5
23 Apr 2016	535.8	0.3	2,053	5
09 Apr 2017	538.0	0.4	2,686	6
01 Nov 2017	542.8	0.7	4,617	10
29 Apr 2019	542.4	0.6	4,364	9
12 Apr 2020	532.6	0.2	1,306	3
27 Dec 2020	543.0	0.7	4,736	10