Data is updated every year about October/November time period



Blackwater Dam, Blackwater River
Peak Project Releases
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
Release (cfs)
10 Feb 1941 1,040
18 Jun 1942 1,930
30 Apr 1943 1,580
28 Apr 1944 1,610
01 Apr 1945 1,830
18 Mar 1946 1,390
14 Apr 1947 1,400
26 Mar 1948 1,250
03 Jan 1949 1,140
  
23 Apr 1950 1,340
16 Apr 1951 2,390
10 Apr 1952 2,390
04 Apr 1953 2,320
14 May 1954 2,100
16 Aug 1955 1,320
04 May 1956 2,130
25 Jan 1957 480
25 Apr 1958 2,150 1
06 Apr 1959 2,220
  
09 Apr 1960 2,220
25 Apr 1961 1,310
04 Apr 1962 2,270
04 Apr 1963 1,530
19 Apr 1964 1,910
18 Apr 1965 934
27 Mar 1966 1,050
07 Apr 1967 1,490
29 Mar 1968 1,860
30 Apr 1969 2,220
  
13 Feb 1970 1,660
06 May 1971 1,540
21 Apr 1972 1,650
06 Apr 1973 1,920
16 Apr 1974 1,370
22 Apr 1975 1,690
05 Apr 1976 1,880
22 Mar 1977 2,010
21 Apr 1978 1,400
23 Mar 1979 1,990
  
12 Apr 1980 1,740
25 Feb 1981 1,820
21 Apr 1982 1,900
24 Mar 1983 1,680
16 Dec 1983 1,970
14 Mar 1985 1,010
02 Apr 1986 1,600 1
16 Apr 1987 2,180
01 May 1988 1,500
04 May 1989 1,640
  
22 Mar 1990 1,930
13 Nov 1990 1,350
13 Mar 1992 1,220
16 Apr 1993 2,150
16 Apr 1994 1,780
28 Dec 1994 1,414
26 Apr 1996 2,244
24 Apr 1997 1,960
07 Apr 1998 2,031
19 Sep 1999 1,670
  
11 Apr 2000 2,058
03 May 2001 1,932
15 May 2002 1,034
01 Apr 2003 1,804
05 Apr 2004 1,470
06 Apr 2005 2,070
31 May 2006 2,220
25 Apr 2007 2,110
21 Apr 2008 1,810
08 Apr 2009 1,935
  
25 Mar 2010 1,787
30 Aug 2011 1,970
10 Dec 2011 1,300
23 Dec 2012 1,450
17 Apr 2014 1,850
16 Apr 2015 1,710
27 Feb 2016 1,510
13 Apr 2017 1,741
31 Oct 2017 1,748
23 Dec 2018 1,711
  
16 Dec 2019 1,385
28 Dec 2020 1,757

Notes:
1.    Estimated Release