Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
DENMARK OXFORD 4 1 4.97 flushes/yr 418 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
21 m
(70 ft) 		6 m
(19 ft) 		131 ha
(324 ac) 		2,868,547 m3
(2,326 ac-ft) 		16 km2
(6.1 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
1979 4.0 4.0 4.0 1
1997 6.6 4.5 5.2 6.1 6 11 2.0 2.0 2.0
1998 7.0 6.4 8.0 11.2 3.1 5.7 7.7 9 3.4 3.4 3.4
1999 5.8 6.6 4.6 5.5 6.6 6 6
2000 21 10.0 39 6.2 9.0 4.2 5.3 6.2 9 2 4.2 4.2 4.2
2001 18 6.5 35 6.5 7.0 4.5 5.7 6.4 7 5 3.7 3.7 3.7
2002 20 6.5 37 6.6 7.0 4.2 4.9 6.4 6 1 3.3 3.3 3.3
2003 40 6.0 40 6.4 12.0 4.0 4.9 6.1 5 3 4.6 4.6 4.6
2004 14 8.0 40 6.3 7.0 3.3 4.6 5.3 6 2.7 2.7 2.7
2005 16 8.0 30 6.8 15.0 3.8 4.8 5.4 7 5.9 5.9 5.9
2006 20 6.5 34 6.7 14.0 3.9 4.4 5.3 7 2.6 2.6 2.6
2007 12 7.0 24 6.8 6.0 4.7 5.4 6.3 6 1 2.2 2.2 2.2
2008 25 5.0 23 10.0 2.9 3.1 3.4 2 7.6 7.6 7.6
2009 29 9.0 25 6.6 6.0 3.8 5.0 5.9 4 3.3 3.3 3.3
2010 5 10.1 58 6.7 12.0 5.1 5.4 6.2 3 1 3.1 3.1 3.1
2011 20 8.0 24 6.3 9.0 4.2 5.0 5.4 5 3.2 3.2 3.2
2012 31 7.5 22 6.3 9.0 4.0 5.1 6.4 4 1 3.6 3.6 3.6
2013 23 6.1 25 6.7 12.0 4.5 5.1 6.0 3 1 3.6 3.6 3.6
2014 33 5.8 31 6.7 5.0 4.8 5.3 6.0 3 3 2.9 2.9 2.9
2015 32 7.2 35 6.7 9.1 22 4.7 5.1 6.1 5 2.7 4.9 9.0
2016 32 6.6 32 6.8 9.3 4.6 5.6 6.8 6 2 1.4 3.2 5.0
2017 43 6.1 29 6.7 10.2 22 3.6 4.5 5.3 5 1.4 4.2 7.3
2018 27 6.2 35 6.7 8.9 1.2 5.2 5.9 6 8 2.0 3.0 6.0

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
24 7.1 33 6.5 9.3 22 8.9 1.2 5 7.7 5.3 1.4 3.7 9

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2016-08-23
2016-09-12
2017-08-10
2017-08-29
2017-09-14
2018-08-09
2018-08-23
2018-09-12
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 24 7.9 23 7.5 25 7.8 22 8.0 22 8.3 28 8.0 24 7.5 22 7.7
1 24 7.9 23 7.6 24 7.9 22 8.0 21 8.3 28 8.0 24 7.5 21 7.7
2 24 7.9 23 7.7 24 7.7 22 8.1 20 7.7 28 7.8 24 7.4 21 7.7
3 24 7.8 23 7.7 23 7.3 22 7.9 20 7.5 26 6.8 24 7.4 21 7.4
4 24 7.8 23 7.6 20 0.3 22 7.5 19 6.9 24 4.1 24 7.3 21 7.1
5 24 7.8 22 7.5 17 0.2 18 0.5 18 3.0 19 0.7 20 0.6 21 5.8
6 24 7.7 22 7.5 15 0.2 15 0.3 17 0.5 16 0.4 17 0.4 18 0.5

Most recent temperature and dissolved oxygen profile plots

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