Data is updated every year about October/November time period



Birch Hill Dam, Millers River
Peak Pool Levels
by Water Year
(1941 - Present)
Drainage Area:  175 sq. miles
Normal Pool:  0 ft.
Gate Invert Elev.:  815 ft. NGVD
1" Runoff =   9,333 ac-ft
Storage at Spillway Crest:   5.3 in. / 49,900 ac-ft



Date
Annual Peak
Pool Level (ft)
Storage Utilized
Inches Acre-Feet Percent
1941 1        
1942 1        
1943 1        
26 Jun 1944 14.0 0.6 6,000 12
05 Jan 1945 9.3 0.3 2,885 6
17 Feb 1946 8.5 0.3 2,475 5
05 Feb 1947 12.8 0.5 5,060 10
27 Mar 1948 20.2 1.3 12,500 25
08 Jan 1949 12.3 0.5 4,710 9
     
07 Apr 1950 9.8 0.3 3,110 6
05 Apr 1951 15.0 0.7 6,900 14
08 Apr 1952 11.0 0.4 3,800 8
01 Apr 1953 19.0 1.2 11,100 22
20 Apr 1954 12.6 0.5 4,920 10
22 Aug 1955 13.7 0.6 5,760 12
19 Oct 1955 19.8 1.3 11,980 24
26 Jan 1957 10.0 0.3 3,200 6
21 Apr 1958 13.5 0.6 5,600 11
06 Apr 1959 14.2 0.7 6,180 12
     
08 Apr 1960 25.0 2.2 20,400 41
18 Apr 1961 6.4 0.2 1,570 3
03 Apr 1962 17.4 1.0 9,240 19
07 Apr 1963 15.1 0.7 6,995 14
17 Apr 1964 11.8 0.5 4,360 9
18 Apr 1965 4.5 0.1 875 2
28 Mar 1966 8.0 0.2 2,200 4
20 Apr 1967 11.1 0.4 3,870 8
25 Mar 1968 21.2 1.5 14,000 28
24 Apr 1969 22.5 1.7 16,000 32
     
06 Apr 1970 11.1 0.4 3,870 8
06 Apr 1971 9.5 0.3 2,975 6
23 Apr 1972 13.5 0.6 5,600 11
02 Jul 1973 15.0 0.7 6,900 14
24 Dec 1973 17.2 1.0 9,020 18
30 Sep 1975 14.8 0.7 6,720 13
04 Feb 1976 14.2 0.7 6,180 12
17 Mar 1977 19.8 1.3 11,980 24
14 Jan 1978 11.8 0.5 4,360 9
11 Mar 1979 26.6 2.5 23,340 47
     
24 Mar 1980 17.0 0.9 8,800 18
28 Feb 1981 12.1 0.5 4,570 9
09 Jun 1982 15.1 0.7 6,995 14
22 Mar 1983 18.5 1.1 10,500 21
05 Jun 1984 30.6 3.4 31,880 64
05 Apr 1985 10.0 0.3 3,200 6
30 Jan 1986 18.5 1.1 10,500 21
09 Apr 1987 33.8 4.3 40,440 81
30 Mar 1988 14.0 0.6 6,000 12
31 Mar 1989 10.2 0.4 3,320 7
     
21 Mar 1990 16.5 0.9 8,325 17
22 Aug 1991 13.8 0.6 5,840 12
03 Apr 1992 13.8 0.6 5,840 12
03 Apr 1993 19.9 1.3 12,090 24
18 Apr 1994 15.4 0.8 7,280 15
31 Mar 1995 12.2 0.5 4,640 9
19 Apr 1996 23.2 1.8 17,208 34
07 Apr 1997 13.0 0.6 5,200 10
03 Apr 1998 16.1 0.8 7,907 16
02 Apr 1999 15.7 0.8 7,565 15
     
07 Apr 2000 15.4 0.8 7,299 15
17 Apr 2001 22.3 1.7 15,648 31
05 Apr 2002 13.4 0.6 5,520 11
01 Apr 2003 17.9 1.0 9,746 20
05 Apr 2004 19.4 1.2 11,584 23
05 Apr 2005 23.6 1.8 17,700 35
17 Oct 2005 21.3 1.5 14,150 28
19 Apr 2007 20.7 1.4 13,250 26
20 Feb 2008 15.5 0.8 7,375 15
02 Apr 2009 14.9 0.7 6,765 14
     
18 Mar 2010 21.9 1.6 15,050 30
12 Mar 2011 21.0 1.4 13,640 27
10 Dec 2011 10.8 0.4 3,680 8
12 Apr 2013 14.5 0.6 6,423 13
02 Apr 2014 18.6 1.1 10,668 21
08 Apr 2015 12.9 0.5 5,158 10
30 Mar 2016 13.9 0.6 5,912 12
09 Apr 2017 18.4 1.1 10,320 21
19 Jan 2018 19.7 1.2 11,903 24
01 Apr 2019 13.8 0.6 5,840 12
     
15 Dec 2019 8.8 0.2 2,634 5
21 Jul 2021 14.5 0.7 6,468 13

Notes:
1.    Missing Pool Data