Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
BELGRADE KENNEBEC 12 1 2.99 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
32 m
(106 ft) 		8 m
(28 ft) 		540 ha
(1,334 ac) 		44,055,143 m3
(35,716 ac-ft) 		24 km2
(9.3 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
1970 5.5 6.5 7.6 3
1971 5.8 6.1 6.4 4
1972 6.1 6.6 7.6 4
1973 6.4 6.4 6.4 1
1974 5.8 6.6 7.0 3
1975 5.6 6.9 8.2 6
1976 12.5 41 10 9.0 5.3 6.3 7.5 6 2.5 2.7 2.9
1977 8.0 8 16.0 6.0 6.8 7.3 4 2.4 2.4 2.4
1978 9 6.4 7.7 8.5 5
1979 10.0 26 9.2 5.6 7.2 8.1 6
1980 5.9 7.5 8.4 5
1981 6.6 7.5 9.1 5
1982 5.0 6.0 5.9 7.3 8.1 5 2.0 2.0 2.1
1983 6.1 7.0 8.1 7
1984 5.5 6.2 7.0 6
1985 8.0 40 9.0 14.0 5.9 7.3 8.5 8
1986 5.5 6.2 7.0 7
1987 5.5 6.7 7.6 6
1988 9.0 31 10.0 31.5 5.2 7.0 8.5 6
1989 4.1 6.0 6.9 6
1990 5.2 6.2 7.5 7
1991 10.0 7.2 8.0 4.9 6.7 7.9 5
1992 10.0 6.0 9.0 9.2 5.8 6.8 8.2 6
1993 5.8 6.9 8.1 5
1994 7.0 4.6 5.1 5.6 3
1995 8.0 20.0 5.2 6.2 7.8 5
1996 9.3 48.0 5.2 5.6 6.2 6
1997 8.7 8 14.0 10.3 3.8 6.1 7.3 7
1998 11.7 10 16.3 5.2 6.2 7.2 6
1999 10.0 47 6.5 19.3 6.1 6.8 7.5 5 3.6 3.6 3.6
2000 11.0 76.0 12.3 4.3 5.2 5.9 5
2001 8.3 44 7.1 8.5 20.0 5.2 6.5 7.4 7 9.6 9.6 9.6
2002 7.0 10.0 48 8.8 7 23.5 4.8 6.1 7.0 6 3.8 3.8 3.8
2003 7.5 11.0 50 7.9 7 28.0 4.7 6.9 7.9 8 4.2 4.2 4.2
2004 10.0 12.0 52 7.1 7.7 8.5 4.4 6.1 7.2 3 4.5 4.5 4.5
2005 14.0 8.3 47 7.2 6.0 14.0 4.4 5.2 6.4 6 9.0 9.0 9.0
2006 13.0 8.1 45 7.1 8.0 11.5 4.1 4.6 4.9 6 5.7 5.7 5.7
2007 4.3 5.7 6.9 9
2008 12.0 8.3 46 7.0 9.0 14.0 4.3 4.9 5.8 5 6.0 6.0 6.0
2009 7.0 33.0 6.0 6.1 6.3 4 5.2 5.2 5.2
2010 9.0 8.0 5.4 5.9 6.3 4
2011 9.5 8.0 4.4 5.7 6.5 4
2012 9.0 9.7 47 7.2 9.0 23.0 4.8 5.9 7.3 4 4.1 4.1 4.1
2013 11.0 9.8 46 7.1 8.0 11.5 5.0 5.9 6.7 7 5.3 5.3 5.3
2014 13.0 11.0 47 7.3 8.0 14.0 4.2 6.0 7.9 8 6.2 6.2 6.2
2015 7.0 5.0 6.4 7.4 8 3.5 3.5 3.5
2016 4.0 10.0 51 7.5 9.0 12.5 4.8 6.9 8.6 8 3.5 3.5 3.5
2017 6.0 11.0 54 7.3 8.0 16.0 4.0 6.3 7.4 10 4.0 4.0 4.0

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
9.7 9.8 45 7.2 8.2 8.4 20 12 3.8 6.4 9.1 5.6 2 4.7 9.6

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2016-08-09
2016-08-18
2016-08-23
2016-09-04
2016-09-22
2017-08-14
2017-08-27
2017-09-15
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 26 8.5 24 8.4 23 8.5 24 8.9 22 8.8 24 8.7 23 8.6 22 8.8
1 25 8.7 24 8.4 23 8.5 23 8.9 22 8.8 24 8.7 23 8.5 21 8.8
2 24 8.7 24 8.4 23 8.5 23 9.0 22 8.9 24 8.7 23 8.5 21 8.8
3 24 8.6 24 8.3 23 8.5 23 9.0 22 8.9 24 8.8 23 8.5 21 8.7
4 24 8.6 24 8.3 23 8.5 23 8.9 21 8.9 24 8.8 23 8.5 20 8.5
5 24 8.6 24 8.3 23 8.5 23 8.9 21 8.6 24 8.7 23 8.5 20 8.5
6 24 8.4 22 7.1 23 8.5 23 8.9 21 8.6 23 7.9 23 8.5 20 8.1
7 22 8.0 20 5.7 23 8.5 23 8.7 21 8.3 20 6.2 22 7.4 19 8.0
8 18 6.9 17 4.2 22 7.0 22 7.3 21 7.3 17 5.0 18 4.3 18 5.9
9 15 4.6 14 2.4 18 4.1 19 3.0 20 5.8 14 4.2 15 3.2 17 3.2
10 15 3.7 14 2.0 15 2.3 15 1.4 18 1.7 13 3.6 13 2.1 15 1.1
11 14 3.3 13 2.0 14 2.0 14 1.0 14 1.1 12 2.8 12 1.5 13 0.8
12 13 2.6 13 1.7 12 0.6 13 0.6 13 0.9 11 2.6 11 1.2 12 0.8
13 12 2.2 12 1.2 12 0.4 12 0.4 13 0.9 11 2.1 11 1.0 11 0.8
14 12 1.7 12 0.9 12 0.3 12 0.4 12 0.9 11 1.8 10 0.9 11 0.9
15 12 1.2 12 0.7 12 0.2 12 0.3 12 0.7 10 1.4 10 0.9 11 0.8
16 12 1.0 12 0.1 12 0.3 12 0.7 10 1.4 10 0.9 11 0.8
17 12 0.9 12 0.4 12 0.1 12 0.3 12 0.6 10 1.1 10 0.9 11 0.8
18 12 0.9 12 0.1 12 0.3 12 0.6 10 1.3 10 0.9 10 0.9
19 12 0.9 12 0.3 12 0.1 12 0.2 12 0.6 10 1.0 10 0.9 10 0.9
20 12 0.2 12 0.1 12 0.2 10 0.9 10 0.8 10 0.6

Recent temperature and dissolved oxygen profile plots

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