Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
GREENE ANDROSCOGGIN 12 1 0.89 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
14 m
(46 ft)
5 m
(17 ft)
76 ha
(188 ac)
3,916,210 m3
(3,175 ac-ft)
7 km2
(2.6 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
1976 6.2 30 17.0 4.5 4.5 4.5 1
1978 4.2 5.1 5.5 4
1979 3.8 4.8 5.2 4
1980 8.0 45 9.0 8.0 5.7 5.7 5.7 1 2.2 2.2 2.2
1981 4.2 4.8 5.3 4
1982 3.7 4.9 6.5 6
1984 5.0 9.0 12.0 3.5 4.6 5.5 3 6.1 6.1 6.1
1985 3.5 5.2 6.5 7
1986 3.5 4.8 5.5 6
1987 6.0 25 5.0 16.0 4.5 5.3 6.5 6
1988 4.0 5.2 6.5 5
1989 2.3 4.6 5.5 6
1990 4.0 4.7 5.3 3
1991 7.0 32 6.8 6.0 3.8 5.3 6.5 2
1993 4.5 4.9 5.1 3
1994 4.0 4.7 5.9 4
1995 3.6 4.4 5.2 5
1996 3.2 3.6 4.7 5
1997 7.9 37 7.0 8.8 10.5 3.3 4.5 6.1 8 2.2 3.7 5.2
1998 60.0 36 11.5 3.0 4.0 4.8 7 5.9 5.9 5.9
1999 6.0 39 10.0 11.0 3.7 4.6 5.6 6 6.6 6.6 6.6
2000 8.8 36 19.5 21.0 2.6 4.7 5.6 6 4.2 5.8 7.3
2001 14.0 39 7.0 5.0 9.0 3.6 5.2 6.0 7 1.7 5.2 8.7
2002 21 8.0 45 8.0 7.5 4.4 5.6 6.6 7 4.0 4.0 4.0
2003 4.7 5.5 6.3 5
2005 6.0 4.5 5.7 7.0 4
2006 9.0 4.3 5.1 6.1 6
2007 14 6.2 57 7.0 7.0 4.3 5.0 6.0 5
2008 6.0 4.2 5.0 5.8 5
2009 9.0 3.5 4.7 5.8 7
2010 5.0 4.8 5.6 6.6 7
2011 9.0 57 8.5 7.5 10.5 3.6 4.8 5.6 9 7.3 8.1 8.9
2012 5.5 2.8 4.6 5.8 9
2013 6.0 4.2 5.2 6.0 10
2014 9.0 49 11.0 8.7 11.0 4.4 5.4 6.4 11 6.2 6.2 6.2
2015 4.3 4.5 5.8 7.2 10
2016 12 9.0 50 7.1 10.0 6.7 16.0 4.4 5.7 6.4 10 7.1 7.1 7.1
2017 65 7.2 6.0 11.0 4.0 5.5 7.3 10 3.2 3.2 3.2

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
16 11 43 7 9.6 6.7 12 2.3 5 7.3 5.9 1.7 5.3 8.9

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2001-08-21
2002-08-14
2006-09-07
2011-08-04
2011-08-16
2014-08-14
2016-09-01
2017-08-09
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 23.9 8.1 28.0 8.3 21.9 9.0 25.1 7.8 22.8 8.1 23.5 8.2 23.6 8.7 24.2 8.5
1 23.9 8.1 26.4 8.5 20.8 9.2 25.1 7.8 22.8 8.1 23.5 8.2 23.7 8.7 24.2 8.5
2 23.8 8.1 25.9 8.4 20.3 9.3 25.2 7.9 22.8 8.0 23.2 8.3 23.7 8.6 24.2 8.5
3 23.7 8.1 24.9 8.6 20.2 9.2 25.1 7.8 22.8 8.0 23.1 8.3 23.7 8.6 24.1 8.5
4 23.7 8.1 23.5 8.5 20.0 9.1 24.1 7.9 22.8 8.0 21.8 8.1 23.6 8.6 23.9 8.4
5 20.0 9.8 19.5 9.9 19.7 8.5 17.0 10.7 20.5 9.9 19.9 9.0 23.1 8.6 17.8 12.1
6 14.0 8.4 14.0 5.9 16.6 0.5 13.1 5.6 13.9 3.6 16.4 8.4 17.3 8.9 13.4 11.0
7 9.8 5.4 11.6 2.9 13.0 0.6 10.4 4.4 10.7 3.1 10.8 5.3 13.4 8.9 10.1 7.5
8 7.7 5.0 10.0 2.9 11.5 1.9 8.5 4.7 8.5 3.7 8.7 5.1 10.8 3.6 7.8 6.0
9 6.9 4.6 8.9 3.7 10.3 2.1 6.7 5.2 7.2 4.3 7.7 5.7 9.4 2.6 6.6 5.7
10 6.1 3.8 7.9 1.9 9.7 1.5 6.0 4.6 6.3 3.4 7.1 4.3 8.5 1.4 6.0 4.6
11 5.8 2.7 7.2 0.5 9.0 0.2 5.7 2.8 5.8 2.6 6.8 2.9 8.1 0.3 5.8 3.3
12 5.6 1.1 7.0 0.2 8.6 0.1 5.5 2.5 5.5 0.8 6.7 1.6 7.8 0.2 5.7 2.1
13 5.6 0.6 6.9 0.2 8.5 0.1 5.4 1.7 5.4 0.1 6.7 1.5 7.6 0.1 5.6 0.5
14 5.6 0.3 6.9 0.1 8.4 0.1 5.4 0.7 5.4 0.0 6.6 0.7 7.5 0.1 5.6 0.3
15 6.6 0.2

Recent temperature and dissolved oxygen profile plots

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