Clearwater Lake

Farmington, Industry, Franklin, Maine
MIDAS 5190

Secchi transparency (mean, maximum & minimum annual values)

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Clearwater Lake
MIDAS 5190 - Station 1
Year Depth - Meters Depth - Feet
Min Mean Max Min Mean Max
1974 13.5 9.7 6.4 44.3 31.8 21.0
1975 12.2 9.9 7.3 40.0 32.6 24.0
1976 11.9 9.5 7.3 39.0 31.1 24.0
1977 8.5 8.5 8.5 27.9 27.9 27.9
1978 n/a n/a n/a n/a n/a n/a
1979 n/a n/a n/a n/a n/a n/a
1980 n/a n/a n/a n/a n/a n/a
1981 n/a n/a n/a n/a n/a n/a
1982 10.5 10.5 10.5 34.4 34.4 34.4
1983 10 8.6 6.4 32.8 28.1 21.0
1984 10 9.0 6.8 32.8 29.4 22.3
1985 12.3 11.1 8.9 40.4 36.3 29.2
1986 11.6 10.5 8.5 38.1 34.5 27.9
1987 10.7 8.9 6.1 35.1 29.3 20.0
1988 13.4 10.1 7.5 44.0 33.0 24.6
1989 10.4 8.7 5.8 34.1 28.6 19.0
1990 11.4 9.6 7.9 37.4 31.5 25.9
1991 11.5 9.6 7.4 37.7 31.6 24.3
1992 12.5 10.8 8.6 41.0 35.4 28.2
1993 12.5 10.8 9 41.0 35.4 29.5
1994 12.8 10.6 7.9 42.0 34.9 25.9
1995 11.4 10.1 8 37.4 33.0 26.2
1996 11.9 9.4 6.5 39.0 30.8 21.3
1997 14.8 10.6 8 48.6 34.8 26.2
1998 12.7 8.7 5.2 41.7 28.4 17.1
1999 10.45 9.1 6.85 34.3 29.7 22.5
2000 8.85 8.0 6.65 29.0 26.3 21.8
2001 10.33 9.4 7.4 33.9 30.9 24.3
2002 12.1 9.6 6.65 39.7 31.5 21.8
2003 12.02 10.1 8.42 39.4 33.1 27.6
2004 9.4 8.7 8.3 30.8 28.6 27.2
2005 11.25 9.2 5.54 36.9 30.2 18.2
2006 10.65 9.4 8.1 34.9 31.0 26.6
2007 11.42 9.6 7.43 37.5 31.5 24.4
2008 10.93 9.5 6.52 35.9 31.0 21.4
2009 10.37 8.8 7.54 34.0 28.9 24.7
2010 11.02 9.7 7.98 36.2 31.8 26.2
2011 11.16 10.4 7.93 36.6 34.1 26.0
2012 12.2 10.0 8.31 40.0 32.6 27.3
2013 10.41 9.7 8.67 34.2 31.9 28.4
2014 10.7 9.8 9.28 35.1 32.2 30.4
2015 10.57 9.3 8.55 34.7 30.4 28.1
2016 12.2 11.0 9.98 40.0 36.1 32.7
2017 11.53 10.3 9.3 37.8 33.9 30.5
2018 11.2 9.8 6.3 36.7 32.1 20.7
2019 11.2 9.9 9.1 36.7 32.4 29.9
2020 12.7 10.5 9.62 41.7 34.4 31.6
2021 13.1 11.0 8.6 43.0 36.1 28.2
2022 12.25 11.3 10.25 40.2 37.0 33.6
2023 11.15 9.8 8.05 36.6 32.0 26.4
2024 11.05 9.7 7.55 36.3 31.7 24.8
2025 11.01 9.9 8.9 36.1 32.5 29.2


Understanding Transparency

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

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