Upper Hadlock Pond

Mount Desert, Hancock, Maine
MIDAS 4612

Secchi transparency (mean, maximum & minimum annual values)

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Upper Hadlock Pond
MIDAS 4612 - Station 1
Year Depth - Meters Depth - Feet
Min Avg Max Min Avg Max
1989 5.9 6.6 7.8 19.4 21.5 25.6
1990 n/a n/a n/a n/a n/a n/a
1991 n/a n/a n/a n/a n/a n/a
1992 5.3 6.0 6.3 17.4 19.6 20.7
1993 6.3 7.0 7.6 20.7 22.8 24.9
1994 4.7 5.8 6.5 15.4 18.9 21.3
1995 5.4 6.2 8.8 17.7 20.3 28.9
1996 5.1 6.0 7.7 16.7 19.7 25.3
1997 5.7 6.4 6.9 18.7 21.0 22.6
1998 6.1 6.4 6.8 20.0 21.1 22.3
1999 5.1 6.3 6.8 16.7 20.7 22.3
2000 4.9 6.3 8.2 16.1 20.8 26.9
2001 6.7 7.5 9.4 22.0 24.6 30.8
2002 6.6 7.4 8.2 21.7 24.4 26.9
2003 5.2 6.6 8.1 17.1 21.8 26.6
2004 4.9 7.1 8.4 16.1 23.3 27.6
2005 5.4 6.3 7.3 17.7 20.6 24.0
2006 5.4 7.3 9.6 17.7 24.0 31.5
2007 5.5 6.9 7.7 18.0 22.6 25.3
2008 3.3 5.1 6.5 10.8 16.9 21.3
2009 5 6.0 7.5 16.4 19.8 24.6
2010 5.4 6.3 7.9 17.7 20.7 25.9
2011 5.6 6.4 7.1 18.4 21.0 23.3
2012 4.7 5.7 6.9 15.4 18.6 22.6
2013 5.9 6.5 7.7 19.4 21.4 25.3
2014 5.2 6.9 7.9 17.1 22.6 25.9
2015 5.8 7.5 8.3 19.0 24.6 27.2
2016 6.9 8.0 10 22.6 26.3 32.8
2017 5.2 6.1 7.2 17.1 20.0 23.6
2018 5.6 6.1 6.6 18.4 20.1 21.7
2019 n/a n/a n/a n/a n/a n/a
2020 3.9 4.4 5 12.8 14.4 16.4
2021 3.1 3.6 4.1 10.2 11.8 13.5
2022 3.8 4.6 5.4 12.5 15.1 17.7


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