Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
T17 R05 WELS AROOSTOOK 68 1 3.28 flushes/yr 578 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
14 m
(46 ft) 		6 m
(21 ft) 		1,027 ha
(2,537 ac) 		64,470,338 m3
(52,267 ac-ft) 		140 km2
(54 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
1981 22 83 19 1.8 2.1 2.5 5 9.3 9.3 9.3
1982 23 29 11.9 11.9 11.9
1983 21 80 31 2.2 2.2 2.2 2 5.2 12.7 31.8
1984 0.9 1.6 3.0 4 5.1 22.3 48.4
1986 20 71 21 23 1.3 2.0 3.5 6 3.9 21.8 53.4
1987 23 81 16 22 1.7 2.5 3.5 7 4.2 10.4 20.1
1988 20 2.0 3.0 6.0 7 2.6 7.8 14.9
1989 65 15 2.5 3.6 5.5 7 2.3 4.0 6.8
1990 50 61 7.1 20 1.6 2.5 3.6 6 3.3 7.2 14.0
1991 16 20 2.4 2.9 3.2 7 6.1 7.7 9.3
1992 15 19 2.3 3.2 3.5 7 2.8 5.6 7.6
1994 10 33 3.3 3.5 3.8 2 3.0 5.0 7.0
1995 2.3 2.7 3.2 5
1996 1.6 2.3 3.1 5
1997 28 75 7.6 15 2.4 3.0 3.9 6 9.4 9.4 9.4
1998 2.0 2.9 3.7 6
1999 1.9 2.6 3.5 6
2000 27 77 22 47 2.0 2.6 3.3 6 10.0 15.0 20.0
2001 1.7 2.2 3.1 6
2002 1.7 2.6 3.2 5
2003 46 30 85 12 16 9 2.1 2.7 3.3 6 4.2 4.8 5.5
2004 15 18 1.8 2.7 3.5 7 8.8 9.9 11.0
2005 19 29 85 7.7 13 26 2.1 2.7 3.4 6 19.0 19.0 19.0
2006 2.3 2.7 3.0 5
2007 1.9 2.7 3.2 5
2008 2.3 2.4 2.4 2
2009 15 25 2.0 2.7 3.4 5 13.0 13.0 13.0
2016 18 30 77 7.7 20 2.8 2.9 2.9 1 7.5 7.5 7.5
2017 17 29 79 8.0 15 2.5 2.5 2.5 1 17.0 17.0 17.0
2018 10 30 7.4 18 10 18 2.6 3.4 5.0 5 6.0 6.0 6.0

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
22 28 77 7.5 17 10 28 20 0.9 2.7 6 5.1 2.3 11 53

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L

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Most recent temperature and dissolved oxygen profile plots

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