Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
JEFFERSON LINCOLN 13 2 2.22 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
35 m
(114 ft) 		10 m
(33 ft) 		636 ha
(1,572 ac) 		33,292,959 m3
(26,991 ac-ft) 		18 km2
(7 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
1977 4.0 4.7 6.0 4
1978 4.0 4.9 6.0 5
1979 14.5 52 3.0 4.5 5.5 6 3.9 3.9 3.9
1980 3.2 3.9 4.3 8
1982 4.5 4.8 5.0 3
1983 3.7 4.8 5.5 5
1984 3.6 4.6 5.1 4
1985 4.6 5.0 5.5 2
1986 9.2 4.5 4.9 6.3 6 2.2 4.1 7.4
1987 3.8 4.3 4.8 3
1988 4.5 4.5 4.5 1
1989 3.0 4.1 4.8 3
1990 9.5 13 3.8 4.8 6.5 7 2.7 5.3 6.6
1991 7.0 9.7 76 4.0 4.9 5.7 6 3.6 5.1 6.5
1992 8.4 6.7 9.5 12 3.3 5.0 6.6 7 3.2 4.4 6.1
1993 9.5 6.7 9.7 22 4.3 5.2 7.0 6 2.0 3.6 5.5
1994 8.1 5.9 8.3 32 3.9 5.2 6.8 6
1995 6.8 7.0 30 4.0 5.2 6.1 6
1996 6.7 7.1 8.3 23 4.8 5.8 7.0 6
1997 8.3 7.0 9.3 33 4.1 5.7 6.9 6 5.1 6.1 7.0
1998 8.5 6.9 9.0 23 4.0 5.5 7.1 6 7.9 7.9 7.9
1999 8.0 48 7.0 11.0 33 2.9 4.7 6.0 5 5.6 6.1 6.7
2000 8.5 6.8 8.7 22 4.0 5.1 5.7 5 3.3 4.6 6.4
2001 6.7 7.0 9.0 89 5.4 5.9 7.3 5 2.4 4.5 6.7
2002 5.5 6.8 10.0 110 4.1 6.0 7.9 6 2.1 3.8 5.7
2003 8 9.0 54 8.0 21 5.1 5.7 7.1 4 1.8 4.2 6.7
2004 8.5 6.7 9.0 50 3.9 4.9 6.0 7 5.3 5.4 5.6
2005 7.5 6.7 10.0 27 3.9 4.8 5.9 6 5.2 6.0 7.6
2006 7.2 9.7 120 3.0 4.5 5.8 9 2.5 4.8 6.4
2007 9.0 4.2 5.4 7.5 6 3.6 3.6 3.6
2008 4.5 5.2 5.8 5
2009 6.5 6.7 10.0 26 3.5 4.7 5.3 6 6.1 6.1 6.1
2010 10.0 99 4.4 5.1 5.7 6 4.2 4.2 4.2
2011 9.5 74 11.0 25 4.8 5.6 6.7 5 5.0 5.0 5.0
2012 4.0 5.1 6.1 7
2013 22 8.5 38 6.6 4.0 5.2 5.9 5
2014 17 8.0 49 7.1 10.0 23 36 4.0 5.2 6.4 7 3.1 3.9 5.3
2015 13 8.0 51 6.5 11.0 44 4.6 5.4 6.3 5 5.9 6.1 6.3
2016 8.0 51 6.3 9.3 50 5.2 5.9 6.6 7 3.4 4.0 4.4
2017 15 8.0 51 6.5 10.0 23 4.8 5.4 6.4 6 4.3 5.8 7.3

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
15 8.2 52 6.6 9.4 45 24 2.9 5.1 7.9 5.5 1.8 4.9 7.9

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2016-08-12
2016-08-24
2016-09-01
2017-08-09
2017-08-24
2017-08-31
2017-09-13
2017-09-25
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 26 8.1 24 7.6 24 7.7 24 7.8 24 8.2 22 7.6 21 8.6 22 8.7
1 25 8.1 24 7.5 24 7.7 24 7.8 24 8.2 22 7.6 21 8.6 22 8.6
2 25 8.0 24 7.5 24 7.7 24 7.8 24 8.2 22 7.6 21 8.6 21 8.6
3 25 7.8 24 7.4 24 7.6 23 7.8 24 8.2 22 7.5 21 8.6 21 8.5
4 25 7.8 24 7.4 24 7.4 23 7.7 24 8.2 22 7.5 20 8.2 21 8.4
5 24 7.4 24 7.3 24 7.4 23 7.5 24 8.1 22 7.5 20 8.3 20 8.2
6 24 6.8 24 7.3 24 7.3 23 5.9 24 8.0 22 7.4 20 8.2 20 8.0
7 23 3.4 24 7.2 24 7.1 21 2.8 22 5.0 22 7.4 20 8.2 20 7.7
8 20 0.1 24 7.0 24 6.5 19 0.6 21 3.0 22 7.3 20 8.1 20 6.8
9 20 0.3 22 1.8 23 6.2 18 0.0 20 0.8 20 0.1 20 7.9 20 5.7
10 18 0.1 19 0.0 21 1.2 16 0.0 17 0.1 18 0.1 20 7.9 20 5.0
11 17 0.0 17 0.0 17 0.0 15 0.0 15 0.0 15 0.1 20 6.2 19 3.9
12 16 0.0 16 0.0 16 0.0 14 0.0 14 0.0 14 0.1 15 0.1 16 0.1
13 15 0.0 15 0.0 14 0.0 13 0.0 13 0.0 13 0.1 13 0.1 13 0.1
14 14 0.0 14 0.0 14 0.0 13 0.0 12 0.0 13 0.1 13 0.1 12 0.1
15 13 0.0 13 0.0 13 0.0 12 0.0 12 0.0 12 0.1 12 0.1 12 0.1
16 12 0.0 13 0.0 13 0.0 12 0.0 12 0.0 12 0.1 12 0.1 12 0.1
17 12 0.0 12 0.0 12 0.0 12 0.0 12 0.0 12 0.1 12 0.1 12 0.1
18 12 0.0 12 0.0 12 0.0 12 0.1 12 0.1 12 0.1

Recent temperature and dissolved oxygen profile plots

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