Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
CAMDEN KNOX 14 1 1.9 flushes/yr 141 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
20 m
(64 ft) 		6 m
(20 ft) 		339 ha
(837 ac) 		21,015,210 m3
(17,037 ac-ft) 		22 km2
(8.3 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
1975 3.7 5.2 7.0 5
1976 11.3 38 7.5 9.2 4.4 5.6 6.8 4 1.9 2.5 3.1
1977 3.8 5.3 7.0 5
1978 2.7 6.2 7.4 5
1979 4.0 5.4 7.3 6
1980 4.4 6.3 7.8 5
1981 9.5 33 11.0 18 5.0 6.0 7.4 5 2.4 2.4 2.4
1982 4.5 6.0 7.5 6
1983 4.0 6.0 7.5 5
1984 9.0 6.0 17 4.5 5.0 5.5 4 6.0 6.0 6.0
1985 9.0 5.0 6.5 8.5 5
1986 7.0 4.0 5.2 6.5 3
1987 9.0 52 9.0 13 4.0 5.4 7.0 5
1988 5.5 6.0 7.0 6
1989 14.0 4.0 5.4 7.0 6
1990 22.5 4.0 5.7 7.0 6
1991 9.0 38 7.1 9.5 18 4.5 5.6 6.5 6
1992 5.0 6.0 7.0 5
1993 4.5 6.1 7.5 5
1994 5.2 5.8 6.6 3
1995 4.6 5.8 7.4 5
1996 4.6 5.5 6.6 6
1997 9.5 44 7.2 7.0 4.6 6.0 7.2 6 16.0 16.0 16.0
1998 4.8 5.3 6.8 4
1999 4.9 5.9 6.8 6
2000 10.0 48 6.0 11 5.0 6.0 6.9 6 4.9 4.9 4.9
2001 4.4 6.2 7.7 5
2002 4.7 6.0 6.9 6
2004 4.3 5.6 7.2 6
2005 12 8.0 56 7.0 8.0 4.6 6.0 6.8 4 2.8 2.8 2.8
2006 4.9 5.7 6.6 5
2007 11 7.8 54 7.3 10.0 25 5.4 6.4 7.3 6 6.9 6.9 6.9
2009 4.2 5.5 6.5 6
2010 6.0 11 4.8 6.5 8.1 6 2.6 2.6 2.6
2011 6.0 5.0 6.1 7.3 6 6.2 6.2 6.2
2012 5.7 6.1 6.3 5
2013 6.3 6.5 7.2 3
2014 5 5.9 6.5 7.2 5
2015 12 10.0 40 7.2 10.3 7.3 7.6 8.0 1 2.1 2.1 2.1
2017 6.5 5.6 6.5 7.5 4 4.7 4.7 4.7
2018 7.0 6.5 7.1 7.6 4 3.0 3.0 3.0

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
12 9.3 45 7.2 9 5 16 9.2 2.7 5.9 8.5 5 1.9 5 16

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2014-08-01
2014-08-23
2015-09-02
2017-08-02
2017-08-16
2018-08-16
2018-08-28
2018-09-13
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 24.3 8.2 23.5 8.5 26.4 8.3 24.7 8.6 23.9 8.8 25.8 7.7 24.6 8.5 22.1 8.7
1 24.3 8.2 23.4 8.4 25.9 8.3 24.6 8.6 23.9 8.7 25.8 7.9 24.6 8.4 21.6 8.7
2 24.1 8.2 23.3 8.4 25.1 8.3 24.5 8.7 23.8 8.7 25.6 8.0 24.5 8.5 21.5 8.6
3 23.8 8.2 23.2 8.4 24.8 8.3 24.0 8.6 23.8 8.7 25.5 8.0 24.1 8.4 21.5 8.6
4 23.6 8.0 23.1 8.4 24.6 8.3 23.3 8.6 23.8 8.6 25.4 7.9 23.9 8.4 21.4 8.5
5 23.3 7.7 22.9 8.4 24.4 8.3 22.4 8.1 23.7 8.6 25.3 7.9 23.5 8.3 21.4 8.4
6 21.5 5.5 22.6 7.5 23.8 8.1 19.4 6.9 23.2 8.4 23.7 8.5 23.2 8.2 21.3 8.4
7 17.8 3.5 20.1 4.0 20.8 6.8 15.6 5.0 18.3 5.9 18.2 8.5 20.5 6.5 20.8 8.0
8 14.1 2.6 14.8 1.0 16.4 1.6 13.6 3.6 15.2 3.6 14.0 3.6 14.7 2.4 16.6 2.1
9 12.7 2.7 13.4 1.1 14.2 1.3 12.1 3.2 12.9 2.6 11.8 2.4 12.1 1.6 12.6 0.7
10 11.6 2.0 12.2 1.3 12.2 1.7 11.3 3.7 11.8 2.1 10.7 3.0 10.7 2.1 11.3 0.8
11 11.3 3.1 11.6 1.8 11.3 1.9 10.6 4.0 11.2 2.2 10.2 3.2 10.2 2.5 10.4 1.1
12 10.8 3.6 11.0 2.0 10.3 2.0 9.9 4.0 10.5 2.6 9.5 3.2 9.4 2.3 9.8 1.2
13 10.4 3.5 10.1 1.3 9.7 1.4 9.0 2.9 9.5 2.5 9.0 2.6 8.9 1.6 9.1 0.7
14 9.8 2.7 9.7 0.8 9.1 0.6 8.8 2.5 9.0 1.8 8.8 2.1 8.7 0.8 8.8 0.1
15 9.5 2.0 9.6 0.6 8.8 0.3 8.7 2.2 8.8 1.4 8.6 1.6 8.6 0.6 8.6 0.0
16 9.4 1.6 9.5 0.3 8.6 2.0 8.8 1.2 8.5 1.3 8.5 0.2 8.6 0.0
17 9.3 1.4 9.4 0.1 8.7 0.2 8.6 1.9 8.7 1.7 8.4 0.8 8.5 0.0 8.5 0.0
18 9.3 1.1 9.4 0.0 8.6 1.9 8.6 0.7 8.4 0.3 8.5 0.0
19 9.2 0.6 8.6 0.2 8.5 1.6 8.6 0.2 8.3 0.0 8.5 0.0

Most recent temperature and dissolved oxygen profile plots

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