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Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
SWEDEN OXFORD 10 1 1.6 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
2 m
(5 ft) 		1 m
(3 ft) 		100 ha
(247 ac) 		8,128,679 m3
(6,590 ac-ft) 		17 km2
(6.4 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 (μS/cm), pH: pH (standard units)

TP = Total Phosphorus (μg/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 (μg/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 4.6 4.6 4.6 1
1977 8.0 4.5 4.5 4.5 1
1981 3.3 4.2 4.7 5
1982 4.0 35 10.0 11 3.5 4.4 5.0 6 3.5 3.5 3.5
1983 8.0 9.0 110 4.0 4.9 5.8 7 1.3 2.3 3.1
1984 4.1 4.9 5.5 7
1985 4.3 5.5 6.9 7
1986 7.0 24 9.0 11 3.5 4.5 5.3 8
1987 3.5 4.7 5.5 8
1988 10.2 11.3 19 3.8 4.6 5.2 9 2.5 2.6 2.8
1989 11.0 3.5 4.3 5.4 8
1990 8.0 6.5 3.3 4.4 5.5 8
1991 6.9 12.0 3.1 4.5 6.0 8 3.0 3.0 3.0
1992 8.3 1.3 4.4 5.7 8 3.3 3.3 3.3
1993 10.0 7.0 21.4 4.3 5.5 7.0 9
1994 10.0 6.7 7.5 10.2 5.0 5.7 6.8 6
1995 8.5 7.0 6.5 10.6 5.4 6.4 7.5 7
1996 12.0 6.4 6.3 3.6 4.7 6.1 7 1.6 4.0 6.4
1997 10.0 3.9 5.0 6.1 10 1.5 6.0 16.0
1998 6.8 6.1 9.5 11.0 3.9 4.6 5.3 5 4.9 10.3 15.7
1999 4.9 6.4 7.0 4.4 5.7 6.4 7 1 3.4 3.4 3.4
2000 24 4.2 37 6.5 8.2 4.3 4.7 5.6 9 4.2 5.4 6.7
2001 22 7.2 38 6.8 8.1 15.2 4.5 5.4 6.5 7 2.1 2.8 3.7
2002 25 6.4 38 6.8 10.4 13.0 4.3 5.4 6.2 6 1.6 3.0 4.1
2003 16 5.5 38 6.6 7.1 13.8 5.0 5.6 6.2 5 1.9 3.0 4.1
2004 21 5.7 31 6.5 7.9 15.0 4.1 5.3 6.3 5 2.4 3.7 4.4
2005 26 5.8 25 6.6 8.5 12.6 4.2 5.2 6.0 6 2.1 3.0 4.3
2006 24 5.7 28 6.7 8.8 14 11.2 4.2 4.9 5.9 9 2.4 3.6 6.1
2007 18 5.3 23 6.7 7.9 12.0 4.8 5.7 6.4 5 1.6 2.6 3.6
2008 21 5.9 22 6.6 8.9 10.5 3.2 4.9 6.1 5 1.4 3.1 4.6
2009 24 7.1 24 6.6 10.7 11.4 3.7 4.5 5.6 8 2.3 3.7 5.7
2010 15 9.4 22 6.6 8.8 9.3 4.4 5.3 6.5 8 1.2 2.4 2.8
2011 20 7.8 24 6.6 8.0 10.8 4.5 5.2 6.3 8 1.7 3.6 6.8
2012 22 6.0 26 6.6 9.6 10.0 3.7 4.8 5.7 7 2.2 3.2 4.4
2013 25 5.4 29 6.7 8.2 10.8 4.4 5.2 6.0 10 1.9 3.4 6.3
2014 38 4.9 37 6.5 7.3 9.0 4.5 5.5 6.6 8 1.8 2.5 3.4
2015 34 6.0 38 6.7 6.3 8.8 4.9 5.7 6.7 7 2.3 2.8 3.7
2016 32 5.7 36 6.8 7.6 10.8 4.7 6.0 6.8 8 1.2 2.2 2.7
2017 44 6.3 28 6.7 8.7 8.0 3.5 4.8 5.6 9 2.7 3.7 5.6

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
25 6.9 30 6.6 8.7 33 11 1.3 5 7.5 7 1.2 3.6 16

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2015-08-17
2015-09-03
2016-08-10
2016-08-24
2016-09-09
2017-08-03
2017-08-22
2017-09-12
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 26.6 8.2 26.0 7.9 24.5 8.2 23.6 8.3 24.0 8.4 26.6 8.1 24.6 8.3 19.2 8.8
1 26.0 8.2 25.2 8.0 24.7 8.1 23.7 8.3 23.7 8.4 25.6 8.1 23.9 8.3 19.0 8.7
2 25.3 8.2 24.9 8.1 24.7 8.1 23.7 8.3 23.6 8.4 24.7 8.1 23.6 8.3 18.9 8.7
3 24.2 8.1 24.5 8.0 24.6 8.1 23.7 8.2 23.5 8.4 22.5 7.7 22.9 8.1 18.8 8.6
4 22.1 7.7 22.1 7.5 23.9 8.0 23.7 8.2 23.1 8.1 17.2 4.8 18.9 4.4 18.8 8.6
5 16.6 5.7 17.8 5.7 18.6 8.0 21.8 7.6 21.7 6.9 12.9 5.0 13.3 3.9 16.4 5.0
6 13.1 5.5 13.3 4.3 15.3 5.2 16.2 4.4 16.7 3.5 10.8 4.9 11.1 3.7 12.5 2.7
7 10.4 5.7 10.7 5.1 12.2 4.8 13.2 3.9 13.3 3.0 9.4 5.2 9.0 4.0 10.2 2.9
8 9.1 5.7 8.9 4.6 10.5 4.6 11.2 3.8 11.2 3.0 8.1 5.3 8.2 4.0 8.6 3.2
9 8.1 5.6 8.0 4.0 9.6 4.6 9.8 3.6 9.6 2.6 7.2 4.9 7.5 3.9 7.8 3.1
10 7.6 4.5 7.5 3.3 8.7 3.4 8.8 3.0 8.9 1.8 6.8 4.8 7.1 3.0 7.3 2.5
11 7.3 3.3 7.3 2.4 8.3 2.6 8.4 2.0 8.4 1.1 6.6 3.9 6.8 2.5 7.1 1.6
12 7.1 2.9 7.1 1.9 8.0 1.9 8.1 0.8 8.1 0.4 6.4 2.3 6.6 1.4 6.9 1.2
13 7.0 2.2 6.9 0.1 7.9 0.4 8.0 0.4 6.5 0.6 6.8 0.9

Recent temperature and dissolved oxygen profile plots

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