St George Lake

Liberty, Waldo, Maine
MIDAS 9971

Secchi transparency (mean, maximum & minimum annual values)

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St George Lake
MIDAS 9971 - Station 1
Year Depth - Meters Depth - Feet
Min Avg Max Min Avg Max
1976 7.5 8.3 8.7 24.6 27.1 28.5
1977 6.2 8.7 11.3 20.3 28.4 37.1
1978 6.4 8.2 9.7 21.0 27.0 31.8
1979 6.4 8.4 10.4 21.0 27.4 34.1
1980 4.1 7.7 10.1 13.5 25.2 33.1
1981 6.4 8.0 9.8 21.0 26.2 32.2
1982 6 7.7 9.1 19.7 25.3 29.9
1983 5.8 8.0 10.8 19.0 26.3 35.4
1984 5.3 8.3 9.8 17.4 27.2 32.2
1985 6.7 8.9 11 22.0 29.3 36.1
1986 6.4 8.5 11 21.0 27.8 36.1
1987 6.1 8.0 9.8 20.0 26.2 32.2
1988 6.4 8.3 10.7 21.0 27.2 35.1
1989 5.5 8.0 8.8 18.0 26.2 28.9
1990 6.2 8.1 11.3 20.3 26.7 37.1
1991 7.3 9.1 10.1 24.0 30.0 33.1
1992 6.7 8.4 9.3 22.0 27.7 30.5
1993 7.3 9.0 10.4 24.0 29.4 34.1
1994 7 9.2 11.1 23.0 30.1 36.4
1995 8 9.5 11.2 26.2 31.0 36.7
1996 7 7.9 10.1 23.0 26.0 33.1
1997 7.6 9.3 11.3 24.9 30.6 37.1
1998 7 8.6 10.3 23.0 28.2 33.8
1999 7.1 8.9 9.8 23.3 29.1 32.2
2000 7.6 8.7 10.1 24.9 28.6 33.1
2001 9.3 9.7 11 30.5 31.9 36.1
2002 7.9 8.9 10.5 25.9 29.2 34.4
2003 8.9 9.7 10.6 29.2 31.7 34.8
2004 n/a n/a n/a n/a n/a n/a
2005 n/a n/a n/a n/a n/a n/a
2006 n/a n/a n/a n/a n/a n/a
2007 n/a n/a n/a n/a n/a n/a
2008 n/a n/a n/a n/a n/a n/a
2009 7.6 8.5 9 24.9 28.0 29.5
2010 n/a n/a n/a n/a n/a n/a
2011 n/a n/a n/a n/a n/a n/a
2012 n/a n/a n/a n/a n/a n/a
2013 n/a n/a n/a n/a n/a n/a
2014 n/a n/a n/a n/a n/a n/a
2015 n/a n/a n/a n/a n/a n/a
2016 6.9 9.3 10 22.6 30.7 32.8
2017 6.6 8.9 9.8 21.7 29.2 32.2
2018 8.5 9.4 10.7 27.9 30.9 35.1
2019 8.6 9.3 9.8 28.2 30.3 32.2
2020 9 10.0 11 29.5 32.9 36.1
2021 7.5 9.9 11.9 24.6 32.4 39.0
2022 8.6 9.7 10.3 28.2 31.7 33.8


Understanding Transparency

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Distribution of Secchi Disk Transparency in All Maine Lakes

Source Data:
Maine Lakes Transparency, Color & Chemistry: Annual Mean Values

Date-specific Secchi data for this and other Maine lakes can be found HERE