Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
BRIDGTON CUMBERLAND 4 1 1.89 flushes/yr 392 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
6 m
(21 ft) 		3 m
(10 ft) 		35 ha
(86 ac) 		1,001,192 m3
(812 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
1988 8.3 16 2.2 2.9 3.7 6 3.1 3.4 3.6
1989 2.9 2.9 2.9 1
1990 6.2 6.4 2.7 3.2 3.5 5
1991 2.5 3.3 4.0 8 2.9 5.2 9.5
1992 6.8 13 2.5 3.2 4.0 8
1993 13.0 6.5 14 3.2 3.8 5.0 4 4.6 4.6 4.6
1994 14.5 6.6 14 18 17 2.5 3.4 4.1 5
1995 10.7 6.8 13 19 21 2.5 3.5 4.5 4 1
1996 70.0 6.6 25 2.5 3.3 4.0 6 7.6 7.6 7.6
1997 11 17 3.5 4.2 5.3 4 4.0 4.6 5.2
1998 8.0 6.2 18 2.5 3.3 4.0 5
1999 37 10 3.4 3.7 4.9 4 3.0 3.0 3.0
2000 46 6.0 50 6.7 11 3.2 3.7 4.0 5 4.5 4.5 4.5
2001 38 11.0 54 6.7 11 3.5 3.8 4.1 6 4.1 4.1 4.1
2002 45 6.0 52 6.6 8 3.6 3.8 4.1 6 3.7 3.7 3.7
2003 55 6.0 42 6.5 11 3.5 4.0 4.5 4 1 3.5 3.5 3.5
2004 38 8.0 36 6.7 10 3.9 3.9 3.9 1 3.7 3.7 3.7
2006 42 6.5 37 6.5 11 2.9 2.9 2.9 1 3.1 3.1 3.1
2007 24 8.0 31 6.8 10 4.7 4.7 4.7 1 3.1 3.1 3.1
2008 50 7.0 34 10 3.4 3.4 3.4 1 3.3 3.3 3.3
2009 40 9.0 38 6.6 10 3.7 3.7 3.7 1 3.8 3.8 3.8
2010 28 10.5 32 6.8 12 4.5 4.5 4.6 1 2.5 2.5 2.5
2011 30 9.0 33 6.6 22 4.8 4.8 4.8 1 3.8 3.8 3.8
2012 6.6 34 6.7 10 4.6 4.6 4.6 1 3.4 3.4 3.4
2013 35 6.0 33 6.7 25 4.0 4.0 4.0 1 2.9 2.9 2.9
2014 75 6.5 36 6.4 8 4.1 4.1 4.1 1 2.8 2.8 2.8
2015 56 8.0 45 6.6 6 5.0 5.0 5.0 1 2.4 2.4 2.4
2016 42 9.0 48 6.7 17 5.6 5.6 5.6 1 2.5 2.5 2.5
2017 45 8.0 40 6.7 17 4.0 4.0 4.0 1 2.7 2.7 2.7
2018 40 7.5 48 6.7 9 5.2 5.2 5.2 1 2.0 2.0 2.0

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
43 11 40 6.6 12 18 18 2.2 3.9 5.6 3.2 2 3.6 9.5

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2011-08-31
2012-08-27
2013-08-21
2014-08-15
2015-08-24
2016-08-29
2017-08-17
2018-08-29
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 24 7.5 26 7.6 24 8.1 23 7.0 25 7.6 25 7.9 24 7.4 27 7.9
1 23 7.6 26 7.7 24 8.1 22 6.9 25 7.6 25 7.8 24 7.4 26 7.9
2 22 7.8 24 6.9 22 7.1 22 6.9 25 7.6 24 7.6 23 7.4 25 7.8
3 22 6.7 23 3.7 21 4.4 22 6.6 24 5.7 24 7.5 22 3.5 24 6.9
4 21 5.5 18 0.1 19 0.1 20 2.4 21 0.4 23 5.9 17 0.4 22 4.0
5 17 0.1 15 0.1 16 0.0 16 0.1 18 0.3 20 0.5 14 0.3 17 0.5
6 14 0.1 13 0.1 14 0.4

Most recent temperature and dissolved oxygen profile plots

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