Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
WINDHAM CUMBERLAND 5 4 7.2 flushes/yr 285 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
16 m
(52 ft)
5 m
(17 ft)
125 ha
(309 ac)
3,539,432 m3
(2,869 ac-ft)
3 km2
(1.2 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
1977 17 5.0 5.0 5.0 1
1978 3.5 4.8 6.0 4 2.6 2.6 2.6
1979 3.5 5.2 6.0 4
1980 3.5 4.0 5.5 5
1981 4.0 5.0 5.7 4
1982 4.2 4.8 5.5 5
1983 4.0 5.2 6.0 6
1984 3.5 4.4 5.2 6
1985 4.5 4.9 5.5 6
1986 10 40 4 4.7 5.0 5.5 6 7.9 7.9 7.9
1987 10 50 11 17 4.5 4.9 6.0 5
1990 4.5 4.5 4.5 1
1991 10 28 6.5 6.5 6.5 1
1992 7 26 6.1 7.2 8.1 4
1993 6.0 6.2 6.5 3
1994 10 19 3.8 5.1 6.1 5
1995 3.7 5.5 6.0 5
1996 4.1 4.8 5.4 5
1997 11 54 7.2 8 25 5.3 5.5 5.7 1 3.7 3.7 3.7
1998 4.3 5.1 5.4 4
2002 13 15 58 6 10 4.9 4.9 4.9 1 3.8 3.8 3.9
2003 4.7 6.0 6.9 5 2
2004 4.9 5.9 6.9 6
2005 3.9 5.6 6.6 5
2006 4.6 5.5 7.1 6
2007 16 11 60 7.3 10 16 5.0 6.1 7.2 6 2.7 2.7 2.7
2008 5.2 5.5 6.3 3
2009 4.6 5.5 6.0 5
2010 4.8 6.0 6.4 6
2011 4.7 5.4 6.3 6
2012 4.4 5.3 6.1 5
2013 4.9 5.7 6.2 4
2014 4.9 5.7 6.2 5
2015 5.0 6.1 7.2 8
2016 5.7 6.4 7.0 6
2017 5.2 6.0 7.3 9
2018 5.3 6.1 6.7 6

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
14 12 52 7.2 10 7 20 3.5 5.4 8.1 4.7 2.6 4.2 7.9

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2015-08-16
2015-08-30
2015-09-05
2016-08-27
2016-09-04
2017-08-13
2017-08-26
2018-08-12
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 27 8.2 26 7.7 25 7.6 26 7.9 24 8.3 25 8.6 24 8.2 27 7.7
1 27 8.2 26 7.7 25 7.5 26 7.9 24 8.3 25 8.6 24 8.2 27 7.7
2 26 8.2 25 7.6 25 7.5 26 7.9 24 8.2 24 8.7 24 8.2 27 7.7
3 26 8.2 25 7.6 25 7.5 25 7.9 24 8.1 24 8.7 24 8.2 27 7.7
4 25 8.2 25 7.6 25 7.4 25 7.8 24 8.1 24 8.7 24 8.2 27 7.7
5 25 8.1 25 7.5 25 7.5 25 7.4 24 7.8 24 7.3 23 7.3 27 6.4
6 24 7.7 25 6.7 24 6.0 25 6.7 24 7.8 21 3.6 21 2.3 23 5.5
7 21 3.4 21 0.9 21 0.5 22 0.1 23 5.8 16 0.2 16 0.4 17 1.1
8 16 0.7 17 0.4 16 0.3 17 0.1 20 0.1 13 0.2 14 0.1

Most recent temperature and dissolved oxygen profile plots

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