Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
SWEDEN OXFORD 10 1 0.8 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
1 m
(4 ft)
0 m
(2 ft)
78 ha
(193 ac)
4,077,346 m3
(3,306 ac-ft)
5 km2
(1.9 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
1976 7.0 4.3 5.4 6.4 6 2.4 2.4 2.4
1977 11.0 44 7.0 11 4.5 5.6 6.3 4 2.3 2.3 2.3
1978 5.8 6.1 6.6 3
1979 6 4.9 6.1 6.8 4
1980 6.2 6.8 7.6 5
1981 4.4 5.9 7.0 6
1982 5.0 52 6.0 12 5.5 5.5 5.9 5 5.0 5.0 5.0
1983 4.0 5.9 7.0 5
1984 5.2 5.8 6.6 4
1985 5.0 36 3.0 18 3.8 6.7 8.0 5
1986 5.3 6.2 6.7 5
1987 6.0 6.6 7.0 4
1988 11.2 8.5 11 5.3 6.2 7.0 5
1989 8.0 4.0 5.2 5.8 4
1990 7.8 6.6 4.5 5.8 6.6 6
1991 4.7 6.3 7.8 6 2.8 2.8 2.8
1992 7.8 5.3 6.3 7.5 5
1993 12.5 6.7 7.2 4.8 6.4 7.9 8
1994 6.0 10.2 4.6 6.0 7.8 4
1995 8.5 7.0 6.3 17 9.0 6.0 7.0 8.0 5
1996 7.5 6.8 9.4 4.5 5.5 6.4 5 3.1 3.5 3.9
1997 10.4 4.3 5.4 7.3 8 1.5 5.5 9.4
1998 6.4 5.9 8.0 8.4 5.1 5.8 6.4 5 1.6 2.9 4.3
1999 6.4 42 6.5 7.7 9.5 5.2 6.3 7.7 5 2.8 3.1 3.8
2000 15.1 5.8 54 6.4 8.2 18 23.3 4.5 5.6 6.7 5 1.5 3.2 4.3
2001 12.7 7.9 56 6.9 7.0 18 18.7 5.1 6.1 7.3 9 1.9 3.0 4.7
2002 10.9 7.4 55 6.7 8.2 16 4.1 6.4 7.8 8 2.3 4.6 11.3
2003 10.5 6.9 45 6.6 6.7 16 5.5 6.8 7.7 5 2.1 2.3 2.7
2004 13.1 6.6 39 6.6 6.8 17 3.2 6.3 7.6 6 1.9 3.2 5.5
2005 15.2 6.8 39 6.8 6.6 14.0 5.4 6.4 7.1 5 1.4 3.0 5.5
2006 11.6 6.4 39 6.8 7.0 16.0 5.5 6.4 7.5 5 1.8 3.3 5.5
2007 11.8 6.3 31 6.7 7.1 14 5.8 6.4 7.3 5 2.0 3.4 5.5
2008 10.3 6.5 33 6.7 6.3 13.3 5.1 6.2 7.1 5 2.3 3.2 4.1
2009 16.0 7.9 40 6.6 8.1 10.2 5.2 6.2 7.0 7 2.0 3.8 7.6
2010 9.1 9.4 30 6.6 7.1 16 5.6 6.6 7.6 10 2.6 3.3 4.9
2011 18.0 8.0 31 6.6 8.8 16 4.7 6.0 7.2 10 2.6 3.7 5.0
2012 13.5 5.5 37 6.7 8.1 13.0 4.6 5.5 6.7 8 2.0 4.0 6.1
2013 14.4 5.7 38 6.7 6.9 13.3 5.4 6.7 7.9 6 1.6 4.0 9.9
2014 26.4 5.3 50 6.6 6.1 13.3 4.8 6.5 7.7 6 1.7 3.3 5.1
2015 26.4 6.8 53 6.6 6.6 12 5.3 6.9 8.1 6 1.7 3.5 5.8
2016 22.2 6.4 52 6.7 6.5 14 6.2 7.2 7.7 7 1.2 2.2 4.4
2017 24.3 6.7 44 6.6 7.8 11.2 4.7 5.8 6.5 8 2.1 2.8 3.2

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
16 7.3 43 6.6 7 6 15 12 3.2 6.2 8.1 5.8 1.2 3.4 11

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2015-08-17
2015-09-03
2016-08-05
2016-08-19
2016-09-08
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 27.3 8.3 26.0 8.0 25 8.3 25 8.2 23 8.5 26.6 8.2 24.7 8.3 19.7 8.9
1 26.2 8.3 25.3 8.1 26 8.3 25 8.2 23 8.4 25.2 8.2 24.1 8.3 19.4 8.9
2 25.4 8.4 25.0 8.1 26 8.2 25 8.2 23 8.4 24.8 8.2 23.6 8.3 19.2 8.9
3 24.8 8.4 24.8 8.1 26 8.2 25 8.3 23 8.4 24.5 8.1 23.3 8.2 19.1 8.9
4 24.2 8.3 24.4 7.7 25 8.2 25 8.2 23 8.2 23.2 8.2 22.6 8.0 19.1 8.8
5 21.8 9.4 23.0 8.5 22 9.7 24 8.1 23 8.1 18.4 8.9 18.4 8.6 18.9 8.7
6 17.5 10.4 17.4 10.5 18 10.1 20 9.8 21 8.2 12.6 7.2 14.0 7.1 16.5 7.0
7 12.6 5.6 13.4 7.0 15 8.9 16 7.2 17 7.8 9.7 3.8 10.9 4.0 12.4 3.0
8 10.5 3.0 11.0 2.3 12 2.2 13 1.8 14 0.9 8.8 2.5 8.8 1.3 10.5 1.6
9 9.4 1.1 9.7 0.1 11 0.5 12 0.6 12 0.5 8.2 1.5 8.3 0.5 9.3 0.5
10 8.8 0.3 8.9 0.1 10 0.4 11 0.5 11 0.4 7.8 1.0 8.0 0.3 8.5 0.3
11 8.5 0.3 8.6 0.1 10 0.4 11 0.4 11 0.4 7.7 0.8 7.9 0.2 8.2 0.3
12 8.4 0.2 8.5 0.1 10 0.4 10 0.4 10 0.4 7.6 0.6 7.8 0.2 8.1 0.3
13 7.5 0.4 7.8 0.2 8.1 0.2

Recent temperature and dissolved oxygen profile plots

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