Data is updated every year about October/November time period



Hop Brook Dam, Hop Brook
Peak Project Releases
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
Release (cfs)
27 Mar 1969 300
  
05 Feb 1970 482
11 Feb 1971 334
14 Mar 1972 295
01 Jul 1973 450
22 Dec 1973 535
28 Sep 1975 520
03 Feb 1976 430
23 Mar 1977 450
27 Jan 1978 492
26 Jan 1979 528
  
25 Mar 1980 520
25 Feb 1981 319
08 Jun 1982 500
22 Mar 1983 456
04 Jun 1984 582
12 Mar 1985 283
29 Jan 1986 455
09 Apr 1987 492
24 Jul 1988 237
07 May 1989 409
  
23 Oct 1989 540
07 May 1991 460
06 Jun 1992 486
02 Apr 1993 495
18 Aug 1994 485
01 Mar 1995 370
13 Nov 1995 547
22 Oct 1996 552
01 Jul 1998 507
17 Sep 1999 612
  
15 Jul 2000 562
23 Mar 2001 568
13 May 2002 486
02 Jan 2003 515
14 Apr 2004 487
03 Apr 2005 341
24 Apr 2006 615
17 Apr 2007 486
14 Feb 2008 340
12 Dec 2008 446
  
26 Feb 2010 408
17 Mar 2011 486
08 Dec 2011 400
14 Jun 2013 386
01 May 2014 372
10 Dec 2014 248
25 Feb 2016 291
08 Apr 2017 313
30 Oct 2017 284
23 Dec 2018 367
  
15 Dec 2019 340
26 Dec 2020 320