Sewall Pond

Arrowsic, Sagadahoc, Maine
MIDAS 9943

Secchi transparency (mean, maximum & minimum annual values)

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Sewall Pond
MIDAS 9943 - Station 1
Year Depth - Meters Depth - Feet
Min Avg Max Min Avg Max
1981 1.5 1.6 2 4.9 5.3 6.6
1982 1 1.5 2.5 3.3 4.8 8.2
1983 1 1.6 2.3 3.3 5.2 7.5
1984 0.9 1.3 1.8 3.0 4.3 5.9
1985 0.6 1.3 2.1 2.0 4.4 6.9
1986 0.5 1.0 1.4 1.6 3.3 4.6
1987 0.5 0.9 1.5 1.6 2.8 4.9
1988 2 2.0 2 6.6 6.6 6.6
1989 n/a n/a n/a n/a n/a n/a
1990 1.4 1.6 2 4.6 5.3 6.6
1991 1.3 1.8 2.2 4.3 5.8 7.2
1992 1.3 1.6 1.8 4.3 5.2 5.9
1993 0.8 1.4 2.2 2.6 4.7 7.2
1994 0.8 1.4 1.7 2.6 4.5 5.6
1995 0.8 1.7 2.3 2.6 5.5 7.5
1996 1.5 1.9 2.3 4.9 6.1 7.5
1997 0.9 1.7 2.5 3.0 5.7 8.2
1998 1.1 1.8 2.7 3.6 6.0 8.9
1999 0.6 1.6 2.3 2.0 5.2 7.5
2000 1.1 1.8 2.2 3.6 6.0 7.2
2001 1.3 1.7 2.9 4.3 5.6 9.5
2002 1.3 1.6 2.1 4.3 5.2 6.9
2003 1.3 1.8 2.4 4.3 5.9 7.9
2004 1.3 1.8 2.3 4.3 5.8 7.5
2005 0.9 1.9 2.3 3.0 6.1 7.5
2006 1.1 1.6 2.2 3.6 5.1 7.2
2007 1 1.5 2 3.3 4.9 6.6
2008 1.2 1.6 2.4 3.9 5.2 7.9
2009 0.9 1.5 2.1 3.0 5.0 6.9
2010 0.8 1.7 2.6 2.6 5.5 8.5
2011 1.3 2.0 2.8 4.3 6.6 9.2
2012 1.1 2.0 2.6 3.6 6.6 8.5
2013 1.5 2.1 2.7 4.9 7.0 8.9
2014 1.3 2.1 2.9 4.3 6.9 9.5
2015 1.4 1.9 2.5 4.6 6.3 8.2
2016 1.8 2.1 2.5 5.9 7.0 8.2
2017 2.2 2.4 2.8 7.2 8.0 9.2
2018 2.2 2.8 3.1 7.2 9.2 10.2
2019 2.6 2.7 2.8 8.5 8.7 9.2
2020 1.8 2.1 2.4 5.9 7.0 7.9
2021 0.9 2.2 2.9 3.0 7.3 9.5
2022 1.8 2.7 3 5.9 9.0 9.8


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