Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
DENMARK OXFORD 4 3 6.34 flushes/yr 418 ft
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
2018 20 6.8 39 6.7 6.1 12.5 5.6 6.7 8.0 5 1.0 2.4 3.0

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
21 7.7 36 6.7 6.5 13 4.8 6.4 8.4 3.7 1 3.2 7.2

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 7.8 23 7.7 24 8.2 22 8.1 21 8.6 29 8.0 25 7.9 22 8.2
1 24 7.8 23 7.6 24 8.2 22 8.1 21 8.6 28 8.0 25 7.9 22 8.1
2 24 7.7 23 7.6 24 8.1 22 8.1 21 8.6 28 8.0 24 7.9 22 8.1
3 24 7.8 23 7.7 24 8.0 22 8.1 20 8.5 28 8.0 24 7.9 22 8.1
4 24 7.8 23 7.7 24 8.1 22 8.0 20 8.4 27 7.7 24 7.8 22 8.0
5 24 7.8 23 7.7 23 7.5 22 8.0 20 8.0 25 6.9 24 7.8 22 7.9
6 24 7.0 23 7.7 18 3.7 21 4.6 19 7.4 18 7.6 21 5.7 21 7.4
7 23 3.4 23 7.6 15 1.0 16 0.5 18 5.0 15 2.9 16 2.4 19 2.4
8 18 0.4 23 7.6 13 0.3 14 0.3 15 0.5 13 1.5 13 0.6 14 0.4
9 16 0.4 16 0.5 12 0.2 12 0.3 13 0.3 11 0.5 12 0.3 12 0.3
10 15 0.3 14 0.4 12 0.2 12 0.2 12 0.3 11 0.2 12 0.3
11 14 0.3 11 0.3

Most recent temperature and dissolved oxygen profile plots

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