Data is updated every year about October/November time period



Hop Brook Dam, Hop Brook
Peak Pool Levels
by Water Year
(1969 - Present)
Drainage Area:  16 sq. miles
Normal Pool:  18.5 ft.
Gate Invert Elev.:  292 ft. NGVD
1" Runoff =   853 ac-ft
Storage at Spillway Crest:   7.8 in. / 6,850 ac-ft



Date
Annual Peak
Pool Level (ft)
Storage Utilized
Inches Acre-Feet Percent
25 Apr 1969 37.8 1.0 916 13
     
04 Apr 1970 40.6 1.4 1,189 17
29 Aug 1971 33.5 0.7 593 9
04 Mar 1972 38.0 1.1 933 14
30 Jun 1973 47.0 2.2 1,962 29
22 Dec 1973 45.8 2.1 1,806 26
28 Sep 1975 44.1 1.8 1,585 23
29 Jan 1976 47.2 2.3 1,988 29
25 Feb 1977 36.5 0.9 806 12
27 Jan 1978 40.3 1.3 1,157 17
26 Jan 1979 50.7 2.8 2,488 36
     
23 Mar 1980 45.9 2.1 1,819 27
25 Feb 1981 38.2 1.1 952 14
07 Jun 1982 57.7 4.1 3,629 53
22 Mar 1983 47.3 2.3 2,001 29
03 Jun 1984 55.4 3.7 3,227 47
28 Sep 1985 25.6 0.2 214 3
15 Mar 1986 41.4 1.5 1,275 19
06 Apr 1987 50.5 2.8 2,458 36
25 Jul 1988 21.4 0.1 85 1
21 Nov 1988 30.8 0.5 433 6
     
22 Oct 1989 46.9 2.2 1,949 28
21 Aug 1991 31.4 0.5 462 7
06 Jun 1992 32.4 0.6 518 8
29 Mar 1993 33.0 0.6 559 8
18 Aug 1994 29.6 0.4 375 5
09 Mar 1995 23.7 0.2 150 2
20 Jan 1996 38.8 1.2 1,012 15
21 Oct 1996 44.5 1.9 1,632 24
10 Mar 1998 31.3 0.5 457 7
17 Sep 1999 42.7 1.6 1,416 21
     
16 Jul 2000 23.5 0.2 143 2
18 Jun 2001 33.8 0.7 610 9
14 May 2002 22.5 0.1 116 2
01 Jun 2003 25.2 0.2 199 3
14 Apr 2004 30.9 0.5 438 6
03 Apr 2005 31.3 0.5 460 7
24 Apr 2006 44.3 1.8 1,625 23
17 Apr 2007 47.8 2.4 2,065 31
14 Feb 2008 35.9 0.9 757 11
12 Dec 2008 36.9 1.0 836 12
     
31 Mar 2010 42.6 1.6 1,399 20
08 Mar 2011 57.4 4.1 3,570 53
08 Dec 2011 32.4 0.6 516 7
14 Jun 2013 34.6 0.8 662 10
01 May 2014 36.5 0.9 805 12
10 Dec 2014 30.0 0.4 386 6
29 Oct 2015 26.5 0.3 243 3
07 Apr 2017 24.9 0.2 187 2
13 Jan 2018 35.0 0.8 693 10
22 Dec 2018 41.5 1.5 1,286 19
     
15 Dec 2019 30.5 0.5 408 6
03 Sep 2021 46.9 2.2 1,941 28