Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
NO 14 PLT WASHINGTON 36 1 0.34 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
23 m
(75 ft) 		7 m
(24 ft) 		1,269 ha
(3,137 ac) 		91,338,716 m3
(74,050 ac-ft) 		35 km2
(14 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
1977 10 6.0 7.6 9.0 6
1978 8.0 9.1 10.0 4
1979 8.0 22 4 5 7.2 7.2 7.3 2 2.6 2.6 2.6
1980 7.0 7.8 9.0 6
1981 8.0 8.8 9.5 3
1982 5.0 25 3 8 8.0 8.0 8.0 1 1.9 1.9 1.9
1983 7.0 8.3 11.0 6
1984 7.0 8.1 9.5 6
1985 2.7 34 5 6 8.0 9.3 10.5 4
1986 8.0 9.0 9.8 4
1987 9.0 9.4 10.0 5
1992 7.0 8.4 10.0 6
1994 5.0 4 7.0 8.2 10.0 6 2.6 2.6 2.6
1995 8.0 9.3 11.0 5
1996 7.2 8.3 10.6 4
1997 7.1 9.0 10.2 6
1998 7.1 8.4 10.7 5
1999 4.5 36 4 9.0 9.7 10.6 6 2.9 2.9 2.9
2000 9.6 10.2 11.2 5
2001 9.8 11.7 13.1 7
2002 11.6 12.2 13.2 4
2003 10.6 12.3 13.3 5
2004 14 5.2 28 6.7 4 8.8 11.7 13.2 5 2.4 2.4 2.4
2005 10.1 11.7 13.0 5
2006 8.2 8.9 10.2 6
2007 9.1 9.7 10.4 5
2008 8.6 9.1 10.2 7
2009 8.5 9.6 10.5 6
2010 4 9.3 10.0 10.6 6
2011 7.8 8.7 10.2 5
2012 7.7 8.8 9.9 6
2013 8.1 9.0 10.1 7
2014 7.4 8.1 9.6 7
2015 10 4.5 20 6.6 3 8.6 9.2 10.5 7 4.1 4.1 4.1
2016 9.3 10.0 10.9 5
2017 8.6 9.8 10.6 3

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
12 5 28 6.7 4.6 4.5 7 6 9.3 13 5.2 1.9 2.8 4.1

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2014-09-08
2015-08-10
2015-08-11
2015-09-06
2016-08-11
2016-09-04
2017-08-13
2017-08-29
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 22.1 8.7 23 8.8 22.6 8.7 24 8.7 24 8.4 23 7.9 22 8.7 22 7.4
1 22.1 8.7 23 8.8 22.6 8.7 24 8.7 24 8.4 23 7.9 22 8.7 22 7.5
2 21.9 8.7 22 8.8 22.6 8.7 23 8.7 23 8.4 22 8.0 22 8.7 21 7.5
3 21.7 8.7 22 8.8 22.6 8.7 23 8.7 23 8.4 22 8.0 22 8.7 21 7.5
4 21.4 8.6 22 8.8 22.6 8.7 23 8.7 23 8.3 22 8.0 22 8.7 21 7.5
5 21.4 8.6 22 8.8 22.6 8.7 23 8.7 23 8.3 22 8.0 22 8.6 21 7.5
6 21.4 8.6 22 8.8 22.5 8.6 23 8.7 23 8.3 22 8.0 22 8.6 21 7.4
7 21.4 8.5 22 8.8 22.5 8.6 23 8.6 23 8.3 22 8.0 22 8.6 21 7.4
8 21.4 8.5 22 8.7 22.2 8.5 22 7.7 22 7.8 22 8.0 22 8.5 21 7.3
9 21.3 8.5 19 7.5 18.7 6.7 21 6.8 20 6.9 22 8.0 21 8.1 21 7.2
10 20.7 6.5 18 7.0 18.3 6.4 20 5.5 19 6.3 22 7.7 18 5.7 21 7.1
11 19.3 4.6 18 6.4 18.1 6.3 19 4.7 18 6.3 21 7.0 18 5.1 21 7.0
12 17.9 2.3 17 6.0 17.7 5.9 18 4.0 18 6.1 19 4.0 17 4.9 19 5.1
13 17.4 1.7 17 5.9 17.5 5.6 18 3.5 17 5.9 18 2.9 17 4.8 18 2.8
14 17.0 1.3 17 5.8 17.3 5.5 18 3.5 16 5.7 17 2.8 17 4.7 17 2.9
15 16.0 1.4 17 5.8 16.9 5.4 17 3.8 16 5.6 16 3.6 16 4.9 16 3.0
16 16.4 5.4
17 13.4 6.4
18 12.8 6.5
19 11.1 6.5
20 8.7 4.0 17 4.6 10.0 6.1 14 4.4 10 5.8 12 4.3 11 5.2 11 3.0
21 9.7 5.5
22
23
24
25 7.4 2.0 17 4.7 13 4.4 10 2.9 12 4.0 10 1.9 10 0.5

Recent temperature and dissolved oxygen profile plots

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