Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
WINDHAM CUMBERLAND 5 1 2.44 flushes/yr 285 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
16 m
(52 ft)
5 m
(17 ft)
78 ha
(193 ac)
3,610,838 m3
(2,927 ac-ft)
16 km2
(6.1 mi2)

Secchi Disk Transparency Graphs

Graph Legend: Secchi symbols = average Secchi Disk Transparency Values; tick marks = maximum and minimum values for each year.

Water Chemistry and Trophic State Parameters

Table Legend:

Color: Color (SPU), Alk: Alkalinity (mg/l CaCO3), SpCon: Specific Conductivity (\(\mu\)S/cm), pH: pH (standard units)

TP = Total Phosphorus (\(\mu\)g/L) – EC: Epilimnion Core, SG: Surface Grab, BG: Bottom Grab, PG: Profile Grab

SDT = Secchi Disk Transparency (m) – Min: minimum value, Avg: average value, Max: maximum value, n: number of months with Secchi readings per year, b: number of times Secchi disk was observed touching the bottom of the lake per year

Chl = Chlorophyll-a (\(\mu\)g/L) – Min: minimum value, Avg: average value, Max: maximum value
Year Color Alk SpCon pH TP-EC TP-SG TP-BG TP-PG SDT-Min SDT-Avg SDT-Max SDT-n SDT-b Chl-Min Chl-Avg Chl-Max
1975 2.6 3.8 4.2 4.4 3
1976 10 3.4 5.4 7.9 6 5 1.8 2.6 3.2
1978 1.8 3.6 4.6 5
1979 11.0 30.0 14 2.5 3.7 4.5 6 2.3 2.8 3.4
1980 2.5 3.7 4.5 6
1981 2.5 3.6 5.5 6
1982 10.0 35.0 14 11.0 2.7 3.2 4.0 4 2.2 2.2 2.2
1984 2.7 3.2 3.6 4
1985 4.3 4.6 4.8 3
1987 3.0 3.8 4.2 3
1990 3.2 3.2 3.2 1
1991 10 3.2 3.8 4.7 5
1992
1993 4.7 5.1 5.7 3
1994 3.5 4.3 5.8 5
1995 3.4 3.8 4.4 5
1996 3.1 3.6 4.0 5
1998 2.4 2.9 3.5 4
2002 26 11.0 56.0 4 9.5 4.5 4.7 4.9 1 5.5 5.5 5.5
2003 3.7 4.4 5.1 6
2004 2.7 3.4 4.1 6
2005 2.9 3.8 4.4 6
2006 2.5 3.4 4.5 5
2007 26 8.3 50.0 7.1 10 27.0 2.9 4.2 5.5 7 6.7 6.7 6.7
2008 3.1 4.0 5.5 3
2009 2.1 3.6 5.3 5
2010 3.9 4.6 5.5 6
2011 3.1 4.0 4.6 6
2012 2.8 3.1 3.7 5
2013 2.7 3.4 4.0 4
2014 3.3 4.0 4.6 6
2015 28 11.0 63.0 7.2 8 18.5 3.4 4.2 5.4 8 8.8 8.8 8.8
2016 3.6 4.8 6.2 6
2017 3.1 4.0 5.0 9
2018 3.3 4.9 5.9 8

Lake Chemistry and Trophic Summary Data - Overall Summary Values:

Avg Color Avg Alk Avg SpCon pH Avg TP-EC Avg TP-SG Avg TP-BG Avg TP-PG SDT-Min SDT-Avg SDT-Max SDT-n Chl-Min Chl-Avg Chl-Max
27 10 39 7.1 10 16 1.8 3.9 7.9 5 1.8 4.8 8.8

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2015-08-30
2015-09-05
2016-08-22
2016-09-10
2017-08-13
2017-08-26
2018-08-12
2018-08-26
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 25.9 8.1 24.6 7.8 17.9 9.6 24 8.3 25.4 8.6 23.2 8.1 26.6 7.4 25.0 7.9
1 25.2 8.1 24.4 7.8 17.9 9.6 24 8.3 25.4 8.6 23.2 8.1 26.6 7.4 25.0 7.9
2 24.7 8.1 24.2 7.8 17.2 9.8 24 8.3 25.2 8.6 23.2 8.1 26.6 7.4 24.5 7.8
3 24.6 8.0 24.1 7.7 16.0 10.0 23 7.9 24.4 8.5 23.1 8.0 26.5 7.4 24.2 7.9
4 23.4 7.1 23.8 2.2 14.0 9.3 23 7.9 21.5 1.4 21.1 3.8 23.9 5.3 23.9 7.5
5 20.0 2.8 19.0 0.6 13.1 8.4 23 7.3 18.9 0.3 16.4 0.2 19.2 2.4 19.2 1.0
6 14.8 0.1 14.4 0.2 11.8 8.2 17 0.1 11.9 1.3 11.8 1.0 12.3 1.7 13.4 0.6
7 12.7 0.1 12.4 0.2 11.3 8.2 16 0.1 9.9 1.5 10.2 0.9 9.5 1.7 9.5 1.4
8 11.0 0.1 11.0 0.1 10.8 7.6 15 0.0 9.4 1.4 9.5 0.9 8.4 2.0 8.3 1.4
9 10.0 0.1 10.1 0.1 10.6 7.6 14 0.0 9.0 1.6 8.8 0.9 7.9 1.7 7.5 1.3
10 9.6 0.1 9.5 0.1 10.3 7.2 11 0.0 8.0 0.9 8.5 0.2 7.3 2.2 7.2 0.3
11 9.2 0.1 9.1 0.1 9.9 5.4 10 0.0 8.2 0.2 8.1 0.1 6.7 0.1 7.0 0.1

Most recent temperature and dissolved oxygen profile plots

Temperature (°C), Dissolved Oxygen (mg/L)