Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
JEFFERSON LINCOLN 13 3 26.34 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
35 m
(114 ft) 		10 m
(33 ft) 		409 ha
(1,011 ac) 		3,314,615 m3
(2,687 ac-ft) 		18 km2
(7.1 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 4.8 5.2 5.5 2
1978 5.5 5.8 6.0 1
1981 4.4 4.4 4.4 1
1982 3.8 4.5 5.0 6
1983 4.5 4.5 4.6 2
1984 5.5 5.5 5.5 1
1985 3.8 4.6 5.5 6
1986 10.6 4.0 4.6 5.2 5 2.5 4.2 7.7
1987 4.3 4.5 4.8 4
1988 4.0 4.5 5.3 6
1989 3.4 4.2 5.0 7
1990 10.0 12 12 3.7 4.7 5.5 7 3.5 4.6 6.7
1991 6.8 6.6 10.7 35 2.8 4.8 5.7 6 2.6 5.4 12.2
1992 10.0 6.6 10.5 11 3.7 4.9 6.2 8 2.8 4.8 8.4
1993 8.4 5.9 8.0 20 4.3 5.3 6.6 7 2.0 3.5 5.0
1994 8.5 6.1 8.5 18 4.3 5.4 7.0 6
1995 7.4 8.2 14 4.1 5.4 6.3 6
1996 7.7 7.1 9.0 14 5.0 5.5 6.5 6
1997 9.2 7.0 10.0 14 4.8 5.7 6.9 6 4.8 5.7 7.3
1998 8.0 6.5 4.4 5.9 7.2 6
1999 8.5 48 6.9 13.0 20 4.1 5.2 6.7 5 6.2 7.1 8.0
2000 8.5 6.7 10.7 19 4.5 5.1 6.0 5 3.2 4.9 7.4
2001 7.2 7.0 13.5 20 5.5 6.3 8.2 5 1.5 3.5 4.5
2002 6.0 6.9 12.0 23 4.4 6.4 9.2 6 1.5 3.3 5.3
2003 8.5 10.0 54 17.0 12 5.4 6.1 6.9 4 1.4 3.6 5.0
2004 11.0 25 4.3 5.4 6.5 6 4.0 4.5 4.7
2005 8.0 6.7 10.0 34 3.9 4.9 5.9 7 3.4 4.7 5.5
2006 7.5 10.3 44 3.9 4.8 6.2 9 2.2 4.3 6.6
2007 10.0 4.5 5.8 6.4 7 3.6 3.6 3.6
2008 5.1 5.9 6.6 5
2009 12.0 43 4.0 4.8 5.7 6 6.9 6.9 6.9
2010 9.0 27 4.5 5.3 5.9 6 3.9 3.9 3.9
2011 9.5 14.0 15 5.1 5.7 7.0 6 5.5 5.5 5.5
2012 3.8 5.0 6.4 7
2013 28.0 9.0 36 6.8 4.5 5.3 6.4 5
2014 14.0 8.0 49 7.0 10.0 18 4.3 5.2 5.9 8 3.8 4.3 5.1
2015 13.0 8.0 51 6.6 12.0 17 5.0 5.3 6.2 4 5.2 5.3 5.5
2016 11.0 9.0 51 6.4 12.0 28 4.1 5.7 6.7 7 3.3 4.1 4.6
2017 13.0 8.0 50 6.5 11.0 24 4.1 5.4 6.2 6 5.0 5.9 6.8

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 48 6.5 11 22 12 2.8 5.2 9.2 5.5 1.4 4.7 12

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 25 7.8 25 7.9 24 8.0 24 8.1 22 7.9 21 8.7 22 8.4
1 26 8.1 25 7.8 25 7.9 24 8.0 24 8.1 22 7.9 21 8.7 22 8.4
2 26 7.8 24 7.8 24 7.8 24 8.0 24 8.1 22 7.9 21 8.7 22 8.4
3 25 7.9 24 7.7 24 7.7 24 7.9 24 8.1 22 7.8 20 8.6 21 8.2
4 25 7.7 24 7.7 24 7.7 24 7.9 24 7.8 22 7.8 20 8.6 21 8.2
5 25 7.3 24 7.6 24 7.6 24 7.8 24 6.9 22 7.7 20 8.3 20 8.0
6 23 2.0 23 3.6 23 6.3 22 2.4 22 4.5 22 7.4 20 7.9 20 7.7
7 17 0.1 18 0.2 19 0.3 17 0.1 18 0.2 19 0.1 20 6.7 20 6.2
8 14 0.0 14 0.1 15 0.0 14 0.1 14 0.1 14 0.1 17 1.6 17 1.6
9 13 0.0 13 0.0 13 0.0 12 0.1 12 0.1 12 0.1 13 0.1 14 0.1
10 12 0.0 12 0.0 12 0.0 11 0.1 11 0.1 12 0.1 11 0.1 12 0.1
11 12 0.0 12 0.0 12 0.0 11 0.1 11 0.0 11 0.1 11 0.1 11 0.1
12 11 0.0 11 0.0 11 0.0 11 0.1 11 0.0 10 0.1 10 0.1 11 0.1

Recent temperature and dissolved oxygen profile plots

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