Data is updated every year about October/November time period



East Branch Dam, East Branch Naugatuck River
Peak Pool Levels
by Water Year
(1969 - Present)
Drainage Area:  9 sq. miles
Normal Pool:  0 ft.
Gate Invert Elev.:  798 ft. NGVD
1" Runoff =   480 ac-ft
Storage at Spillway Crest:   8.8 in. / 4,350 ac-ft



Date
Annual Peak
Pool Level (ft)
Storage Utilized
Inches Acre-Feet Percent
Apr 1969 1 21.0 0.6 320 7
     
Apr 1970 1 23.0 0.8 396 9
Apr 1971 1 11.5 0.1 74 2
Mar 1972 1 20.8 0.6 313 7
Feb 1973 1 27.4 1.2 587 14
Dec 1973 1 32.2 1.7 829 19
Sep 1975 1 38.1 2.4 1,195 27
Jan 1976 1 24.9 1.0 475 11
Mar 1977 1 26.4 1.1 541 12
Jan 1978 1 29.3 1.4 679 16
Mar 1979 1 33.8 1.9 920 21
     
Mar 1980 1 33.7 1.8 914 21
Feb 1981 1 26.2 1.1 532 12
Jun 1982 1 30.6 1.5 744 17
Apr 1983 1 25.5 1.0 501 12
Jun 1984 1 38.8 2.5 1,246 29
Mar 1985 1 11.8 0.2 78 2
Jan 1986 1 23.9 0.9 432 10
Apr 1987 1 39.8 2.7 1,318 30
Mar 1988 1 9.9 0.1 50 1
May 1989 1 20.3 0.6 295 7
     
Oct 1989 1 32.9 1.8 869 20
Oct 1990 1 23.0 0.8 396 9
Mar 1992 1 17.7 0.4 212 5
Mar 1993 1 22.7 0.8 384 9
Dec 1993 1 16.0 0.3 165 4
Dec 1994 1 18.5 0.5 236 5
Jan 1996 1 23.0 0.8 396 9
Dec 1996 1 9.0 0.1 40 1
08 Jan 1998 12.8 0.2 95 2
17 Sep 1999 13.4 0.2 108 2
     
16 Jul 2000 9.2 0.1 41 1
17 Dec 2000 11.9 0.2 80 2
07 Jun 2002 8.2 0.1 31 1
29 Sep 2003 9.6 0.1 46 1
30 Oct 2003 9.8 0.1 48 1
03 Apr 2005 6.7 0.1 18 1
15 Oct 2005 7.9 0.1 27 1
17 Apr 2007 44.7 3.5 1,718 39
15 Jun 2008 6.4 0.1 15 1
21 Jun 2009 16.8 0.4 185 4
     
25 Jan 2010 13.8 0.2 115 3
28 Aug 2011 19.4 0.5 263 6
01 Oct 2011 16.0 0.3 164 4
10 Aug 2013 17.8 0.4 213 5
14 Aug 2014 8.9 0.1 37 1
15 Jun 2015 9.0 0.1 39 1
25 Feb 2016 9.0 0.1 39 1
07 Apr 2017 8.1 0.1 29 1
30 Oct 2017 10.1 0.1 52 1
21 Dec 2018 14.4 0.3 127 3
     
02 May 2020 12.0 0.2 81 2
02 Sep 2021 27.9 1.3 612 14

Notes:
1.    Estimated Date of Peak Pool