Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
T17 R04 WELS AROOSTOOK 68 1 0.29 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
50 m
(163 ft)
15 m
(49 ft)
2,715 ha
(6,709 ac)
406,374,688 m3
(329,453 ac-ft)
195 km2
(75 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
1970 2.4 2.6 3.0 3
1971 2.4 3.2 4.6 4
1972 16 2.7 5.3 9.1 4
1973 8.2 8.2 8.2 1
1980 19 79 14 15 1.8 3.0 4.4 4 8.3 8.3 8.3
1981 24 96 15 12 2.9 4.6 6.0 6 11.5 11.5 11.5
1984 1.8 3.4 4.8 8 10.0 10.0 10.0
1985 4.5 4.6 4.8 1
1986 21 80 15 17 2.0 3.5 5.0 7 3.4 12.3 23.0
1987 23 91 16 14 3.5 6.7 11.5 5 1.6 2.5 3.6
1988 17 3.8 4.4 5.0 3 2.9 4.5 5.8
1989 69 14 2.9 6.0 9.0 4 3.2 6.2 11.5
1992 13 4.5 4.5 4.5 1
1993 12 5.0 5.0 5.0 1 2.4 2.4 2.4
1994 13 12 4.1 4.2 4.4 2 2.4 4.7 7.0
2000 32 90 15 2.8 2.8 2.8 1 15.0 15.0 15.0
2001 30 88 7.8 11 4.2 4.2 4.2 1 7.6 7.6 7.6
2003 2.2 4.0 5.4 6
2004 2.8 4.1 5.4 5
2006 11 29 89 7.8 12 3.0 3.0 3.0 1 6.7 6.7 6.7
2010 9 2.9 5.4 8.1 3
2011 10 2.8 5.0 7.6 7
2012 86 6.8 3.2 5.0 6.5 7
2013 13 30 85 7.6 9 8 4.1 5.6 7.5 8 5.9 5.9 5.9
2014 6 3.9 5.3 6.7 15
2015 7 4.3 5.6 7.9 7
2016 5.0 6.5 8.4 9
2017 8 43 90 8.1 11 4.4 5.3 7.3 4 6.8 6.8 6.8

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
11 28 86 7.3 13 8 14 14 1.8 4.7 12 4.6 1.6 7.5 23

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2013-09-01
2013-09-03
2013-09-18
2014-08-02
2014-08-12
2015-08-15
2015-09-04
2017-09-19
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 20.8 9.5 20.1 8.9 16.2 9.5 24.3 9.2 23.1 8.5 21.7 9.4 21 8.1 18.1 9.7
1 20.7 9.5 20.0 9.0 16.0 9.5 23.9 9.2 23.1 8.6 21.2 9.4 21 8.1 18.1 9.8
2 20.7 9.5 19.7 9.0 15.9 9.5 22.9 9.5 22.9 8.6 21.0 9.5 21 8.2 18.1 9.8
3 20.6 9.5 19.6 9.0 15.9 9.5 22.1 9.3 22.8 8.6 21.0 9.5 21 8.2 18.1 9.8
4 20.4 9.5 19.6 8.9 15.9 9.5 21.8 9.2 22.7 8.7 20.9 9.5 21 8.1 18.1 9.8
5 19.9 9.3 19.6 8.8 15.9 9.5 21.7 9.3 22.5 8.5 20.9 9.5 21 8.1 18.1 9.8
6 19.7 9.1 19.5 8.8 15.8 9.5 21.6 9.2 22.4 8.6 20.7 9.5 21 8.1 18.1 9.8
7 19.5 8.5 19.5 8.7 15.8 9.5 21.2 8.7 21.8 8.6 20.5 9.2 21 8.1 18.0 9.8
8 19.2 8.2 19.5 8.7 15.8 9.5 19.0 7.7 20.5 8.0 20.3 9.0 21 8.1 18.0 9.8
9 18.7 7.7 19.4 8.6 15.7 9.5 16.5 7.2 15.9 6.2 19.6 8.4 20 7.9 17.9 9.7
10 17.7 6.8 19.3 8.4 15.7 9.5 14.4 7.2 14.4 6.3 18.5 7.7 20 7.3 17.7 9.6
11 14.6 5.8 16.6 5.9 15.7 9.5 13.5 7.3 13.0 6.6 17.8 7.5 18 5.6 17.6 9.4
12 12.7 5.7 13.7 5.6 15.6 9.5 12.2 7.6 12.0 6.7 16.5 7.0 17 5.5 17.5 9.3
13 12.1 5.9 11.2 5.7 15.4 9.2 11.2 7.8 11.1 6.9 15.6 6.9 16 5.4 17.0 8.8
14 11.4 6.1 10.6 5.9 15.3 9.0 10.6 7.8 10.3 7.1 14.4 6.9 15 5.5 14.0 7.2
15 10.7 6.3 10.2 6.1 14.8 8.6 10.0 7.9 9.7 7.2 13.3 7.1 14 5.7 12.2 5.2
16
17 9.9 6.2 10.7 4.8
18 9.9 6.6 11.3 5.8 8.7 8.4 8.7 7.5 11.9 7.5 13 6.0
19 9.7 6.3 10.0 5.0
20
21 9.5 6.6 9.4 6.3 10.3 5.4 8.1 8.4 8.0 7.5 10.6 7.5 12 6.2
22 9.4 5.3
23 9.4 6.2
24 9.3 6.4 10.0 5.3 7.7 8.4 7.7 7.4 10.2 7.1 11 6.1 9.2 5.2
25 9.3 6.2
26 9.1 5.1
27 9.3 6.4 9.9 5.3 7.6 8.3 7.5 7.4 10.1 7.0 11 5.9
28 8.9 5.1
29
30 9.2 6.4 9.1 6.2 9.8 5.3 7.4 8.2 7.4 7.3 10.1 6.9 10 5.6 8.8 5.0
31
32
33
34
35 9.1 6.0 9.1 6.1 9.6 5.0 7.3 8.1 7.3 7.3 9.9 6.6 10 5.3 8.8 4.9
36
37
38
39
40 9.0 5.9 9.0 5.8 9.5 4.9 7.2 8.0 7.2 7.4 9.8 6.0 10 5.1 8.7 4.5
41
42
43
44
45 9.0 5.3 9.5 4.9 7.1 8.1 7.2 7.0 9.8 5.6 10 4.9 8.7 4.3
46
47
48
49
50 7.1 7.7

Recent temperature and dissolved oxygen profile plots

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