Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
WINDHAM CUMBERLAND 5 1 2.44 flushes/yr
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

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 4.9 1.8 4.8 8.8

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2015-09-18
2015-09-27
2016-08-22
2016-09-10
2016-09-20
2017-08-13
2017-08-26
2017-09-17
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 24.9 8.3 19.8 8.4 17.9 9.6 24 8.3 22 8.5 25.4 8.6 23.2 8.1 23.3 8.7
1 24.6 8.3 19.7 8.3 17.9 9.6 24 8.3 22 8.5 25.4 8.6 23.2 8.1 23.0 8.8
2 23.8 8.4 19.5 8.3 17.2 9.8 24 8.3 22 8.4 25.2 8.6 23.2 8.1 22.2 8.9
3 23.2 8.3 19.5 8.3 16.0 10.0 23 7.9 21 7.9 24.4 8.5 23.1 8.0 20.3 8.4
4 22.6 7.8 19.4 8.3 14.0 9.3 23 7.9 21 7.8 21.5 1.4 21.1 3.8 19.5 7.4
5 20.9 4.0 19.3 8.3 13.1 8.4 23 7.3 21 7.6 18.9 0.3 16.4 0.2 18.1 4.6
6 16.4 0.5 17.0 1.6 11.8 8.2 17 0.1 20 5.5 11.9 1.3 11.8 1.0 14.8 0.2
7 13.0 0.2 12.4 0.2 11.3 8.2 16 0.1 15 0.1 9.9 1.5 10.2 0.9 10.9 0.2
8 11.3 0.2 11.3 0.2 10.8 7.6 15 0.0 13 0.1 9.4 1.4 9.5 0.9 10.0 0.1
9 10.1 0.2 10.2 0.1 10.6 7.6 14 0.0 11 0.1 9.0 1.6 8.8 0.9 9.4 0.1
10 9.7 0.2 9.6 0.1 10.3 7.2 11 0.0 11 0.1 8.0 0.9 8.5 0.2 9.1 0.1
11 9.2 0.1 9.9 5.4 10 0.0 8.2 0.2 8.1 0.1 8.6 0.1
12 8.4 0.1

Recent temperature and dissolved oxygen profile plots

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