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Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
T16 R04 WELS AROOSTOOK 68 2 4.67 flushes/yr 576 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
12 m
(38 ft) 		5 m
(16 ft) 		206 ha
(509 ac) 		9,710,200 m3
(7,872 ac-ft) 		21 km2
(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 (μS/cm), pH: pH (standard units)

TP = Total Phosphorus (μg/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 (μg/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
1975 27.4 40 7 3.4 4.2 5.2 4
1976 39.7 2.7 3.8 4.8 5
1977 17.0 58 2.7 3.7 5.2 5
1978 3.7 4.1 4.9 3
1980 17.5 4.9 4.9 4.9 1
1981 3.5 3.0 3.5 4.3 4
1982 3.0 3.0 3.7 4.5 6
1983 3.0 3.0 3.7 4.3 6
1987 15.2 1.1 1.5 2.0 2 13.5 14.4 16.8
1988 1.0 2.5 3.9 6
1989 3.1 3.5 4.0 3
1990 30.5 39 6.9 15.0 19 2.0 3.3 4.2 6 2.5 4.3 6.9
1991 12.0 22 1.4 2.5 4.0 5 1.6 6.3 18.2
1992 9.5 17 2.0 2.9 3.8 6 2.4 2.5 2.7
1993 2.1 2.9 4.3 5
1994 14 2.8 3.3 4.6 5 3.9 5.2 6.5
1995 3.2 3.8 4.5 6
1996 2.6 3.6 4.5 6
1997 18.0 47 9.0 17 2.9 3.7 4.5 6 4.3 4.3 4.3
1998 2.1 3.5 4.9 6
1999 3.0 4.1 5.6 6
2000 17.0 58 11.0 24 2.1 3.0 4.5 7 8.7 8.7 8.7
2001 18.0 52 13.2 18 3.3 4.2 5.3 5 3.8 3.8 3.8
2002 20 21.5 56 10.6 116 2.7 3.6 4.8 6 5.4 5.4 5.4
2003 56 21.5 54 13.0 14 2.4 3.2 4.5 6 6.5 6.5 6.5
2004 1.9 2.9 3.8 2
2005 17.0 2.6 3.4 4.5 7
2006 25 16.4 52 7.4 13.0 26 2.9 3.4 4.2 6 6.7 6.7 6.7
2007 2.8 3.6 4.2 7
2008 2.9 3.4 4.1 7
2009 2.7 3.3 4.5 9
2010 2.3 3.0 4.1 5
2011 40 17.2 47 7.4 14 2.2 2.8 3.5 6
2012 2.2 2.9 4.1 7
2013 2.7 3.1 4.0 7
2014 3.0 3.6 4.3 5
2015 2.4 2.8 3.6 5
2016 2.1 2.9 4.7 6
2017 2.2 2.9 3.7 7
2018 19 20.0 48 7.3 18.0 43 1.8 2.3 2.9 6 15.0 15.0 15.0

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
32 18 50 7.2 13 10 37 18 1 3.3 5.6 5.5 1.6 6.9 18

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2016-08-30
2017-08-09
2017-08-24
2017-09-13
2018-08-12
2018-08-22
2018-08-25
2018-09-09
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 21 8.4 21 8.6 21 8.5 18 9.8 25 8.1 22 7.7 22 8.6 20 8.9
1 21 8.4 21 8.6 21 8.5 18 9.8 24 8.3 22 7.7 22 8.6 20 9.0
2 21 8.3 21 8.5 21 8.4 18 9.7 23 7.3 22 7.6 22 8.2 20 9.0
3 21 8.2 21 8.5 21 8.4 18 9.7 23 7.4 22 7.6 21 7.9 20 8.9
4 21 8.1 21 8.4 21 8.3 17 9.2 23 7.3 22 7.6 21 7.9 20 8.9
5 21 8.1 20 3.4 20 7.8 17 9.2 22 2.5 22 7.5 21 7.7 20 9.0
6 20 4.6 18 0.4 20 5.5 17 8.8 19 0.3 19 0.2 20 0.4 19 9.3
7 17 0.4 16 0.3 18 0.4 17 8.0 17 0.3 17 0.1 18 0.3 19 9.3
8 14 0.4 15 0.3 15 0.3 17 7.6 16 0.3 17 0.1 16 0.3 17 0.5
9 13 0.4 14 0.3 14 0.3 16 1.2 16 0.3 16 0.1 16 0.3 16 0.3
10 13 0.4 13 0.3 13 0.3 15 0.3 16 0.3 15 0.3 15 0.3
11 13 0.4 13 0.3 13 0.2 13 0.3 15 0.3 15 0.3 15 0.2

Most recent temperature and dissolved oxygen profile plots

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