Data is updated every year about October/November time period



Hancock Brook Dam, Hancock Brook
Peak Pool Levels
by Water Year
(1968 - Present)
Drainage Area:  12 sq. miles
Normal Pool:  7 ft.
Gate Invert Elev.:  454 ft. NGVD
1" Runoff =   640 ac-ft
Storage at Spillway Crest:   6.1 in. / 3,900 ac-ft



Date
Annual Peak
Pool Level (ft)
Storage Utilized
Inches Acre-Feet Percent
May 1968 1 11.8 0.6 406 10
Mar 1969 1 10.5 0.4 285 7
     
Feb 1970 1 13.6 1.0 608 16
Aug 1971 1 8.9 0.3 160 4
Mar 1972 1 11.4 0.6 367 9
Feb 1973 1 11.8 0.6 406 10
Dec 1973 1 16.1 1.5 945 24
Mar 1975 1 8.8 0.2 154 4
Jan 1976 1 14.0 1.0 656 17
Mar 1977 1 10.9 0.5 319 8
Jan 1978 1 13.8 1.0 632 16
Apr 1979 1 11.7 0.6 397 10
     
Mar 1980 1 19.0 2.2 1,419 36
Feb 1981 1 12.4 0.7 470 12
Jun 1982 1 23.4 3.6 2,286 59
Mar 1983 1 16.4 1.5 991 25
May 1984 1 18.3 2.0 1,298 33
Sep 1985 1 8.0 0.2 102 3
Dec 1985 1 12.9 0.8 525 13
Apr 1987 1 19.0 2.2 1,419 36
Jul 1988 1 8.0 0.2 102 3
May 1989 1 11.2 0.5 348 9
     
Oct 1989 1 17.3 1.8 1,132 29
Oct 1990 1 10.5 0.4 285 7
Jun 1992 1 16.1 1.5 945 24
Mar 1993 1 11.2 0.5 348 9
Aug 1994 1 11.8 0.6 406 10
Mar 1995 1 9.1 0.3 175 4
Jan 1996 1 14.1 1.0 669 17
Oct 1996 1 11.5 0.6 377 10
11 May 1998 8.4 0.2 131 3
17 Sep 1999 10.5 0.4 282 7
     
07 Jun 2000 7.8 0.1 94 2
23 Mar 2001 9.7 0.3 216 6
14 May 2002 7.6 0.1 90 2
01 Jun 2003 8.6 0.2 140 4
14 Apr 2004 8.5 0.2 140 4
29 Mar 2005 8.4 0.2 140 4
13 May 2006 11.5 0.6 385 11
16 Apr 2007 12.7 0.8 503 13
09 Mar 2008 9.2 0.3 182 4
12 Dec 2008 9.7 0.4 223 5
     
31 Mar 2010 9.6 0.4 220 5
29 Aug 2011 13.7 1.0 614 16
08 Dec 2011 8.6 0.2 142 4
14 Jun 2013 9.5 0.3 204 5
01 May 2014 9.4 0.3 201 5
10 Dec 2014 8.3 0.2 120 3
25 Feb 2016 8.1 0.2 110 3
07 Apr 2017 7.7 0.1 83 2
30 Oct 2017 9.0 0.3 164 4
25 Jan 2019 9.4 0.3 193 5
     
14 Apr 2020 10.2 0.4 258 7
02 Sep 2021 18.2 2.0 1,283 33

Notes:
1.    Estimated Date of Peak Pool