Processing math: 100%

Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
T16 R04 WELS AROOSTOOK 68 1 1.51 flushes/yr 576 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
12 m
(38 ft) 		5 m
(16 ft) 		427 ha
(1,054 ac) 		22,311,600 m3
(18,088 ac-ft) 		56 km2
(22 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
1974 10.5 2.0 3.4 4.4 6 1.4 2.5 4.0
1975 30.2 40 8.4 3.4 4.0 5.2 7 1.1 1.9 3.3
1976 45.3 12.8 15 2.4 3.6 4.6 6 1.0 2.1 3.6
1977 15.0 64 7 3.1 3.8 5.0 6
1978 3.8 4.2 4.9 4
1980 17.0 65 12.0 18 4.6 4.9 5.2 1 7.4 7.4 7.4
1981 7.5 60 15.0 20 2.8 3.4 4.3 5 3.4 3.4 3.4
1982 3.2 2.7 3.4 4.1 6
1983 3.0 2.9 3.5 4.1 6
1986 3.2 3.2 3.2 1
1987 17.0 56 15.2 1.0 2.0 3.9 3 5.8 16.1 27.2
1988 22 1.0 2.8 4.3 7 2.3 9.2 25.5
1989 20 2.3 3.5 5.0 7 1.4 4.5 6.2
1990 31.0 38 7.0 16.0 22 2.4 3.3 4.5 6 1.7 4.3 7.4
1991 12.0 24 1.4 2.3 3.2 5 1.2 6.0 25.8
1992 9.0 16 19 1.9 2.8 4.0 6 2.7 2.8 2.8
1993 2.3 2.9 3.8 5
1994 20 2.4 3.0 4.1 5 5.9 7.1 8.3
1995 2.8 3.6 4.3 6
1996 2.5 3.5 4.3 6
1997 18.0 50 7.4 10.0 16 2.6 3.3 4.4 7 6.0 6.0 6.0
1998 2.1 3.4 4.8 6
1999 3.0 4.0 5.2 6
2000 17.2 62 13.0 18 1.9 2.9 4.2 7 7.7 7.7 7.7
2001 19.1 53 14.5 18 3.2 4.0 5.2 6 6.0 6.0 6.0
2002 24 21.5 59 8.2 11 2.6 3.4 4.4 6 5.6 6.0 6.9
2003 56 23.5 61 14.0 14 2.2 3.2 4.1 6 5.9 5.9 5.9
2004 1.4 2.6 3.5 3
2005 13.0 2.4 3.4 4.5 7
2006 25 16.9 56 11.0 23 2.8 3.3 4.0 6 25.0 25.0 25.0
2007 3.0 3.5 4.0 7
2008 2.8 3.1 3.9 6
2009 2.5 3.0 4.1 8
2010 2.1 3.0 4.3 6
2011 42 17.5 48 7.4 14.0 2.0 2.7 3.5 8
2012 2.1 3.0 4.1 5
2013 1.8 2.9 3.6 6
2014 2.6 3.4 4.1 6
2015 2.1 2.7 3.0 5
2016 21 21.0 46 7.8 20.0 32 1.9 2.9 4.2 5 11.0 11.0 11.0
2017 2.1 2.6 3.1 7
2018 17 19.5 52 7.3 20.0 33 1.8 2.4 2.8 6 18.0 18.0 18.0

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
31 19 54 7.3 14 11 18 21 1 3.2 5.2 5.7 1 7.6 27

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
2017-08-25
2017-09-13
2018-08-12
2018-08-25
2018-08-28
2018-09-09
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 21 8.7 21 8.6 20 8.3 19 10.1 25 7.4 23 9.4 23 8.6 20 8.6
1 21 8.7 21 8.6 20 8.3 18 10.1 24 7.5 22 9.4 23 8.6 20 8.5
2 21 8.6 21 8.5 20 8.3 18 10.1 24 7.5 22 8.5 23 8.6 20 8.3
3 21 8.5 21 8.5 20 8.0 18 9.8 24 7.2 22 8.0 23 8.5 20 8.2
4 21 8.2 21 8.4 20 7.9 18 9.6 24 7.1 22 7.8 22 7.8 20 8.2
5 20 8.0 21 8.3 20 7.9 17 9.6 23 5.5 22 7.8 22 7.1 20 8.3
6 20 7.9 20 7.3 20 7.9 17 9.3 22 0.8 21 7.2 22 6.3 20 8.3
7 19 2.6 19 0.3 20 7.6 17 9.1 20 0.3 21 4.9 20 0.2 20 8.3
8 17 0.4 17 0.2 20 7.2 17 8.7 19 0.3 20 0.4 19 0.2 19 8.3
9 15 0.3 17 0.2 20 3.8 17 8.1 18 0.3 18 0.3 19 0.2 20 8.2
10 14 0.3 16 0.2 18 0.3 17 7.3 18 0.3 18 0.3 20 8.2
11 14 0.3 16 0.2 16 0.3 17 7.2 17 0.3 17 0.3 18 0.4

Most recent temperature and dissolved oxygen profile plots

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