Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
BRIDGTON CUMBERLAND 4 1 3.72 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
11 m
(35 ft) 		4 m
(12 ft) 		28 ha
(69 ac) 		1,050,480 m3
(852 ac-ft) 		7 km2
(2.6 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
1988 9
1990 8.3 6.7 3.9 4.5 5.0 3
1991 7.2 15.5 4.0 4.4 5.0 5 1.3 4.9 8.9
1992 16.4 4.0 5.7 6.8 5 1.6 1.6 1.6
1993 9.5 6.7 9.0 11.5 5.3 5.9 7.4 4 2.2 2.4 2.7
1994 12.1 4.3 5.2 7.0 5
1995 12.0 6.8 9.8 18 14.2 4.2 5.1 6.1 5
1996 12.2 6.8 9.2 3.0 4.2 5.5 7 1.3 3.2 7.0
1997 80.0 49 7.1 7.0 12 15.6 4.0 5.0 5.6 8 5.2 10.9 16.0
1998 8.1 6.4 10.0 3.6 5.1 6.6 6 7.1 7.5 7.9
1999 7.1 6.5 8.0 13.6 4.6 5.7 6.3 5 2.7 4.2 5.3
2000 18 7.2 58 6.5 8.5 24 93.0 4.3 5.3 6.5 7 2.1 4.3 6.4
2001 22 8.6 59 6.9 8.5 21 4.1 5.3 7.0 10 2.7 4.5 7.4
2002 23 7.8 66 6.7 9.8 15.3 4.0 4.8 6.0 8 2.8 4.7 8.3
2003 29 7.8 57 6.6 7.7 28 4.2 5.4 6.5 5 1.6 3.8 7.3
2004 25 9.3 42 6.6 9.9 14.3 3.8 4.6 5.6 7 2.9 6.3 10.0
2005 19 8.9 43 6.7 9.0 21.3 4.5 5.0 6.1 5 2.0 5.6 10.6
2006 24 7.8 41 6.7 11.1 25.3 3.6 4.8 5.5 7 2.8 5.4 7.6
2007 15 7.4 37 6.7 7.7 14 5.1 5.9 6.3 5 1.8 3.4 6.7
2008 17 7.5 40 6.5 8.9 18.2 4.2 5.0 6.3 5 2.3 4.8 11.0
2009 18 10.4 42 6.7 9.5 14.7 4.3 5.0 5.4 3 3.4 3.6 3.8
2010 23 12.5 44 6.7 8.0 30 6.3 6.3 6.3 1 5.0 5.0 5.0
2011 15 10.0 48 6.8 7.0 6.7 6.7 6.7 1 4.3 4.3 4.3
2012 27 8.2 41 6.6 10.5 19.0 4.7 5.0 5.3 1 6.3 6.8 7.3
2013 36 9.1 46 6.7 9.0 17.3 4.9 4.9 4.9 1 6.5 6.5 6.5
2014 44 8.5 52 6.5 6.0 6.4 6.4 6.4 1 1.5 1.5 1.5
2015 36 9.0 63 6.8 6.0 17 6.4 6.4 6.4 1 2.3 2.3 2.3
2016 23 10.0 64 6.8 5.0 19 6.2 6.2 6.2 1 1.2 1.2 1.2
2017 40 9.0 62 6.7 7.0 15.3 5.3 5.3 5.3 1 2.5 2.5 2.5

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
25 12 50 6.7 8.4 9 20 20 3 5.3 7.4 4.4 1.2 4.4 16

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2011-08-11
2012-08-08
2012-08-28
2013-08-26
2014-08-25
2015-08-19
2016-08-12
2017-08-23
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 25.0 7.8 26.4 7.4 25.2 7.9 24.2 8.4 23.2 8.3 28.0 8.0 26.6 8.1 25.0 8.3
1 24.2 8.0 26.1 7.4 25.2 7.9 23.4 8.5 22.8 8.3 27.3 8.0 25.8 8.1 24.9 8.3
2 24.1 8.1 25.5 7.6 24.3 8.1 22.7 8.6 22.1 8.2 26.2 8.3 25.2 8.1 24.7 8.4
3 23.8 8.3 19.1 6.1 20.7 2.9 19.8 2.8 21.1 6.6 24.3 7.9 24.9 7.9 21.3 7.7
4 16.6 6.5 12.8 0.2 15.4 0.1 16.7 0.6 17.5 5.2 19.6 10.8 21.2 7.6 14.5 1.3
5 11.2 2.6 10.7 0.2 11.5 0.1 13.8 0.4 13.2 1.1 14.5 6.8 15.1 1.3 9.9 0.4
6 8.4 0.9 9.5 0.2 9.9 0.1 10.4 0.3 9.6 0.4 10.8 0.4 11.5 0.5 8.4 0.3
7 7.3 0.4 8.8 0.1 9.1 0.1 9.1 0.3 7.9 0.0 8.9 0.3 9.2 0.4 7.4 0.2
8 6.7 0.4 8.4 0.1 8.5 0.1 8.3 0.2 7.2 0.0 7.9 0.3 8.1 0.4 7.0 0.2
9 6.4 0.4 8.3 0.1 8.2 0.1 7.8 0.2 6.9 0.0 7.6 0.3 7.6 0.4 6.6 0.2
10 6.8 0.0

Recent temperature and dissolved oxygen profile plots

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