Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
WINDHAM CUMBERLAND 5 1 1.43 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
12 m
(38 ft) 		4 m
(13 ft) 		82 ha
(203 ac) 		3,200,000 m3
(2,594 ac-ft) 		8 km2
(3 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
1974 7.2 4.3 5.1 6.5 6 2.7 3.6 6.2
1975 8.0 69 8.0 3.4 5.3 6.6 8 3.6 4.9 7.2
1976 12 4.0 5.2 6.4 7 1.4 4.2 8.5
1977 4.9 6.0 6.7 3
1980 2.6 4.0 5.4 4
1981 6.0 34 9 34.0 2.9 4.2 5.3 4 4.0 4.0 4.0
1984 7.5 6 34.0 5.2 5.2 5.2 1 2.5 2.5 2.5
1991 7 25.0 2.2 4.3 6.1 5
1992 4.5 2 7.1 9 3.1 4.5 5.7 7 2.8 2.8 2.8
1993 4.0 7 25.0 3.8 5.0 5.8 6 1.4 2.1 2.8
1994 6.4 4.0 5.1 6.9 7
1995 4.5 6.4 4.9 5.8 7.4 7
1996 3.5 4.6 6.2 5
1997 9.4 6.4 4.4 5.2 6.3 8
1998 5.5 69 6.0 8 16.0 3.5 5.1 6.3 7 3.4 3.4 3.4
1999 12.8 88 6.2 8 20.0 4.7 5.7 6.5 6 4.1 4.1 4.1
2000 9.6 6.4 4.4 5.2 6.0 6
2001 13.7 107 6.3 7 22.0 5.3 5.9 6.7 5 3.2 3.2 3.2
2002 14 9.2 120 6.1 9 9.5 3.8 5.4 6.8 6 2.2 2.8 3.4
2003 10.0 6.3 5.0 5.1 5.8 7.2 5
2004 7.7 6.1 7 4.1 5.3 6.2 6
2005 4.9 5.3 6.1 7
2006 4.1 5.3 6.8 8
2007 22 6.6 66 6.3 8 27.0 4.8 5.4 6.0 7 3.4 3.4 3.4
2008 12.0 6.3 8.0 4.1 5.2 6.3 7
2009 12.0 6.2 6.0 4.5 5.2 5.9 7
2010 231.0 4.9 5.7 6.0 8 3.4 3.4 3.4
2011 9.8 6.2 6 18.0 4.2 5.5 5.9 5 3.5 3.5 3.5
2012 12.0 6.2 4.8 4.9 5.2 5
2013 12.0 6.2 4.7 5.4 5.9 4
2014 12.0 6.3 4.4 5.4 6.6 4
2015 7 16.5 4.4 5.7 7.0 6 1.3 1.3 1.3
2016 12.0 6.2 5.0 5.7 6.3 5
2017 4.5 5.3 5.9 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
18 9.1 69 6.3 7.9 6.8 40 2.2 5.2 7.4 5.8 1.3 3.3 8.5

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2015-08-16
2015-08-30
2016-08-15
2016-09-02
2017-08-02
2017-08-21
2017-09-04
2017-09-23
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 26 7.7 25 7.7 26 8.2 24 7.6 25 7.7 23 8.2 20 8.3 21 8.5
1 26 7.7 25 7.7 26 8.2 24 7.6 25 7.7 23 8.2 20 8.3 21 8.5
2 25 7.7 24 7.7 26 8.1 24 7.6 25 7.7 23 8.2 20 8.3 20 8.6
3 25 7.7 24 7.7 26 8.1 24 7.6 24 7.6 23 8.2 20 8.2 20 8.5
4 24 7.3 24 7.7 25 7.9 24 7.6 23 7.4 23 7.7 20 8.2 20 8.4
5 23 5.5 24 6.9 25 6.8 24 7.6 20 4.2 22 6.9 20 8.3 20 8.3
6 19 0.7 20 0.4 21 0.9 24 7.5 16 1.2 18 0.3 20 8.2 20 8.4
7 15 0.1 15 0.3 18 0.5 19 0.8 12 0.7 13 0.0 17 0.5 19 3.5
8 12 0.0 12 0.4 14 0.5 14 0.6 11 0.1 14 0.1 11 0.1 12 0.1
9 11 0.4 12 0.4 10 0.0 10 0.0 11 0.1
10 10 0.4 10 0.0 11 0.1
11 10 0.4

Recent temperature and dissolved oxygen profile plots

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