Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
DENMARK OXFORD 4 3 6.34 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
21 m
(70 ft) 		6 m
(19 ft) 		179 ha
(442 ac) 		7,023,294 m3
(5,694 ac-ft) 		18 km2
(6.8 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
1980 5.7 6.6 7.5 4
1981 4.8 6.2 7.0 4 4.2 4.2 4.2
1982 5.0 6.3 7.2 4
1986 8.0 25 8.0 17.0 6.8 6.8 6.8 1
2000 8.5 40 6.0 9.5 6.0 6.0 6.0 1 2.9 2.9 2.9
2013 6.0 6.0 6.0 1
2015 22 7.9 40 6.7 6.1 10.5 6.3 6.9 7.4 5 2.2 4.8 7.2
2016 20 7.5 37 6.8 6.7 17.0 6.0 6.7 8.4 6 1.5 2.2 2.7
2017 22 7.1 39 6.7 6.0 10.0 5.7 6.4 7.6 6 1.8 2.9 4.2

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
22 7.8 36 6.7 6.6 13 4.8 6.4 8.4 3.6 1.5 3.4 7.2

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2015-08-31
2015-09-15
2016-08-04
2016-08-23
2016-09-12
2017-08-10
2017-08-29
2017-09-14
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 25 8.0 23 7.9 26 8.0 24 7.8 23 7.7 24 8.2 22 8.1 21 8.6
1 25 8.0 23 7.8 26 7.9 24 7.8 23 7.6 24 8.2 22 8.1 21 8.6
2 25 7.9 23 7.8 26 8.0 24 7.7 23 7.6 24 8.1 22 8.1 21 8.6
3 25 7.8 23 7.8 26 7.9 24 7.8 23 7.7 24 8.0 22 8.1 20 8.5
4 25 7.8 23 7.8 25 7.9 24 7.8 23 7.7 24 8.1 22 8.0 20 8.4
5 25 7.5 23 7.8 25 7.8 24 7.8 23 7.7 23 7.5 22 8.0 20 8.0
6 22 4.1 23 7.7 23 6.7 24 7.0 23 7.7 18 3.7 21 4.6 19 7.4
7 18 1.0 19 0.1 19 1.4 23 3.4 23 7.6 15 1.0 16 0.5 18 5.0
8 15 0.1 16 0.1 17 0.4 18 0.4 23 7.6 13 0.3 14 0.3 15 0.5
9 13 0.1 13 0.1 16 0.4 16 0.4 16 0.5 12 0.2 12 0.3 13 0.3
10 12 0.1 14 0.3 15 0.3 14 0.4 12 0.2 12 0.2 12 0.3
11 14 0.3 14 0.3

Recent temperature and dissolved oxygen profile plots

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