Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
WINDHAM CUMBERLAND 5 2 0.68 flushes/yr 285 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
16 m
(52 ft)
5 m
(17 ft)
552 ha
(1,363 ac)
33,094,456 m3
(26,830 ac-ft)
16 km2
(6 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 3 6.8 6.8 6.8 1
1977 8 6.6 6.6 6.6 1
1978 4.8 6.1 7.5 3
1979 12.0 32 10 7 5.5 6.1 6.7 2
1980 6.0 6.8 7.5 6
1981 6.5 7.4 8.0 5
1982 43 4.0 5.0 6.0 5 5.4 5.4 5.4
1986 9.0 30 6 7 7.0 7.0 7.0 1 2.7 2.7 2.7
1987 10.0 40 8 19 7.8 7.8 7.8 1
1989 5.8 8.2 9.8 5
1991 5 11 5.6 6.6 7.7 7
1992 11 5.5 6.9 7.7 3
1993 5.0 6.2 7.2 6
1994 37 5.8 6.3 6.9 5
1995 6.2 6.6 7.2 5
1996 5.1 6.0 6.9 5
1998 10.0 43 8 10 5.0 5.6 6.3 4 3.7 3.7 3.7
1999 9.5 49 16 5.9 6.8 8.2 6 5.4 5.4 5.4
2000 3.6 5.7 7.1 5
2001 6.0 7.2 8.1 5
2002 6.6 7.7 9.3 5
2003 6.6 7.7 8.8 6
2004 11 14.8 56 7.3 5 8 6.4 7.2 8.1 6 3.4 3.4 3.4
2005 11 9.5 54 7.2 5 7 4.6 6.7 7.8 5 3.6 3.6 3.6
2006 5.5 6.2 7.3 5
2007 4.0 6.4 7.8 8
2008 6.1 6.5 7.0 3
2009 5.2 6.2 6.9 6
2010 6 18 4.8 6.7 7.6 6 3.7 3.7 3.7
2011 5.2 6.3 7.0 5
2012 5 5.1 6.2 7.1 5
2013 6.1 6.6 7.3 4
2014 5.5 6.7 7.4 7
2015 6.5 7.8 8.7 7
2016 6.3 7.7 8.6 8
2017 8 12.0 68 7.2 9 4.7 6.5 8.6 9 2.5 2.5 2.5
2018 6.1 7.2 8.2 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
10 11 42 7.3 8 5.5 13 3.6 6.7 9.8 5 2.5 3.8 5.4

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2015-09-05
2016-08-14
2016-08-27
2017-08-13
2017-08-26
2017-08-29
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 24.9 7.8 26 8.0 25.2 7.9 24.3 8.9 23.3 8.1 23 8.1 26.7 7.8 25.1 8.1
1 24.9 7.8 25 8.0 25.5 7.9 24.3 8.9 23.3 8.1 23 8.0 26.7 7.8 25.1 8.1
2 24.8 7.8 25 8.0 25.0 7.9 24.3 8.9 23.3 8.1 23 8.0 26.7 7.8 25.1 8.1
3 24.7 7.8 25 8.0 24.9 7.9 24.2 8.8 23.3 8.1 23 8.1 26.7 7.8 25.0 8.1
4 24.7 7.8 25 8.0 24.8 7.9 24.0 8.7 23.2 8.1 23 8.1 26.7 7.8 24.6 8.1
5 24.7 7.8 25 7.9 24.7 7.8 23.6 8.4 23.2 8.1 22 8.0 26.7 7.8 24.5 8.7
6 24.5 7.7 25 7.9 24.6 7.8 21.7 6.0 23.2 8.1 22 8.1 25.0 7.8 24.3 7.9
7 22.7 7.0 23 7.6 24.3 7.5 18.6 5.4 22.4 6.0 20 5.1 21.1 8.7 23.7 7.5
8 18.9 6.4 18 8.0 19.5 6.6 15.1 5.2 17.3 3.6 16 3.8 14.4 9.6 16.9 7.2
9 14.3 6.3 15 7.5 14.8 5.4 12.7 4.7 13.1 3.4 13 4.0 12.6 9.1 13.3 7.6
10 12.1 5.6 13 4.6 12.9 3.1 10.9 4.6 11.1 3.3 11 3.9 9.5 7.1 10.3 6.2
11 10.6 2.0 11 1.4 11.9 2.0 10.0 3.9 10.1 2.4 8.2 4.5 8.8 4.2
12 9.6 0.2 11 0.1 11.2 0.2 9.5 2.5 9.6 1.6 7.8 3.3 8.7 3.2
13 9.4 0.2 10 0.1 10.7 0.1 9.4 2.3 9.6 1.4 7.6 2.8 7.7 2.0
14 9.1 0.1 10 0.1 10.3 0.1 9.1 1.7 9.4 0.6 7.5 2.3 7.5 1.1
15 10 0.1 9.9 0.1 9.0 1.3 9.4 0.1 7.3 0.8 7.5 0.6

Most recent temperature and dissolved oxygen profile plots

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