Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
DENMARK OXFORD 4 1 0.79 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
13 m
(44 ft) 		5 m
(15 ft) 		97 ha
(240 ac) 		4,604,680 m3
(3,733 ac-ft) 		6 km2
(2.1 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
1976 6.2 6.2 6.2 1 4.1 4.1 4.1
1982 4.6 4.9 5.1 5
1983 4.0 4.0 5.2 7.5 4 2.3 2.4 2.4
1984 4.6 4.7 5.0 2
1985 5.8 6.3 7.3 5
1986 7.0 22 9.0 20 4.6 4.9 6.0 5
1988 4.0 4.5 5.1 2
1989 4.5 5.0 5.9 4
1990 6.7 5.0 4.0 4.8 7.1 5
1991 6.7 6.0 17 5.3 6.0 7.1 3 2.1 2.1 2.1
1992 6.5 9 7.1 7.5 7.9 2 7.7 7.7 7.7
1993 5.5 6.9 8.0 18 7.3 7.5 7.7 2 6.2 6.2 6.2
1994 6.0 6.6 6.0 17 5.2 7.0 8.9 7
1995 7.4 7.0 6.5 11.3 6.7 7.2 8.6 7
1996 11.5 6.6 8.8 4.9 6.1 7.3 6 4.0 4.0 4.0
1997 7.8 5.3 7.4 8.7 7 1.5 3.0 3.9
1998 6.0 5.9 15.5 7.8 4.7 6.1 7.6 9 1.7 2.4 3.1
1999 4.8 30 6.3 9.5 10.7 4.0 5.8 6.7 10 5.3 7.5 9.0
2000 14.5 5.4 40 6.6 7.6 15.7 5.0 6.0 7.0 9 2.0 3.8 5.3
2001 15.9 6.7 37 6.6 7.6 13.3 6.0 7.4 8.6 5 1.4 2.2 3.1
2002 9.8 6.2 41 6.7 8.4 15.0 6.3 7.4 8.5 8 1.7 2.3 2.9
2003 9.3 6.2 34 6.6 8.4 13.3 5.2 6.8 11.5 6 1.8 4.6 8.8
2004 13.4 6.3 26 6.6 9.1 11.2 4.6 5.9 6.6 6 2.9 4.5 5.7
2005 22.7 5.8 25 6.6 6.6 10.8 5.8 6.3 6.8 5 1.2 3.0 4.9
2006 16.4 5.3 26 6.7 7.9 13.0 5.2 5.9 6.9 5 1.9 2.8 4.8
2007 12.9 5.8 23 6.6 7.9 13.5 5.6 6.6 7.4 6 1.6 2.7 3.7
2008 10.2 5.8 20 6.7 6.5 10.0 5.4 6.2 7.3 6 1.4 3.1 5.3
2009 12.9 7.2 22 6.6 8.6 10.2 5.6 6.1 6.8 5 2.2 3.2 4.9
2010 7.8 8.6 21 6.6 8.1 13.0 5.6 6.1 6.6 6 1.2 3.5 5.8
2011 12.6 7.2 20 6.6 9.5 11.0 5.0 5.6 6.5 7 2.4 3.8 7.0
2012 16.4 5.3 26 6.7 8.7 6 10.0 4.6 5.5 6.7 5 2.0 4.4 7.7
2013 17.1 5.5 22 6.6 8.8 12.2 5.0 6.1 7.8 7 2.0 3.7 5.9
2014 29.1 5.2 23 6.6 8.6 8.5 5.4 6.4 7.5 6 1.8 3.3 6.2
2015 24.8 6.3 26 6.8 7.1 10.5 4.8 5.9 6.5 6 2.0 3.8 6.9
2016 24.4 6.2 26 6.8 7.9 11.7 4.3 6.1 7.6 6 1 1.8 3.2 4.8
2017 27.3 6.8 25 6.7 7.9 10.0 4.6 5.5 6.3 9 2.0 4.0 5.9

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 6.3 27 6.6 8 6 16 11 4 6.1 12 5.5 1.2 3.8 9

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2015-08-26
2015-09-08
2016-08-02
2016-08-18
2016-09-07
2017-08-02
2017-08-18
2017-09-07
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 25.0 7.9 26.2 8.3 26.2 8.2 25.0 8.3 23.2 8.4 26.2 8.3 23.6 8.4 20.0 8.6
1 25.0 7.9 25.8 8.4 25.8 8.2 24.6 8.3 23.2 8.3 25.6 8.3 23.6 8.3 19.9 8.6
2 25.0 7.9 25.5 8.4 25.7 8.2 24.5 8.3 23.2 8.3 24.9 8.4 23.6 8.3 19.9 8.6
3 25.0 7.9 25.0 8.4 25.6 8.1 24.5 8.3 23.2 8.3 24.3 8.4 23.6 8.2 19.8 8.6
4 24.9 7.8 24.5 8.2 25.5 8.1 24.4 8.3 23.1 8.2 22.0 7.6 23.6 8.2 19.8 8.5
5 21.7 8.1 22.8 8.1 21.7 8.4 23.9 8.0 23.1 7.8 15.9 6.5 17.2 6.1 19.3 7.8
6 16.9 5.5 17.7 4.6 17.9 6.6 18.8 5.1 21.9 6.0 11.6 3.9 13.2 4.0 15.8 2.9
7 13.4 3.4 13.6 2.4 15.1 4.9 15.5 3.8 16.6 2.8 10.0 2.6 10.3 1.9 11.8 1.9
8 10.9 2.4 11.3 1.4 12.2 3.2 12.7 2.0 13.8 0.7 8.9 2.7 9.1 1.8 10.0 0.9
9 9.9 1.7 9.9 0.9 10.9 2.4 11.3 1.0 12.0 0.5 8.4 2.6 8.6 1.6 8.9 0.6
10 9.5 1.4 9.4 0.4 10.3 1.9 10.4 0.6 11.0 0.4 8.0 2.4 8.1 1.3 8.4 0.3
11 9.0 1.0 9.1 0.1 9.9 1.7 9.8 0.3 10.2 0.4 7.7 2.1 7.9 1.1 8.1 0.3
12 8.8 0.4 8.9 0.1 9.6 1.5 9.4 0.3 9.9 0.4 7.6 2.2 7.8 1.3 8.0 0.2
13 8.6 0.2 8.7 0.1 9.3 0.8 9.3 0.3 9.7 0.4 7.4 1.5 7.6 0.4 7.9 0.2
14 8.6 0.2 8.5 0.1 9.2 0.5 9.2 0.3 9.6 0.4 7.8 0.2

Recent temperature and dissolved oxygen profile plots

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