Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
LITCHFIELD KENNEBEC 12 1 2.25 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
19 m
(62 ft)
5 m
(17 ft)
176 ha
(435 ac)
9,000,000 m3
(7,296 ac-ft)
7 km2
(2.5 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
1974 8.6 4.6 5.1 6.1 6 2.1 4.4 8.6
1975 7.2 4.5 6.3 7.3 7 2.3 3.3 4.9
1976 18 62 7.8 12 3.9 5.7 7.0 9 2.0 3.4 9.3
1977 6 4.5 5.3 6.1 2
1978 6.0 6.0 6.0 1
1979 25.0 5.0 5.9 6.6 4 2.1 3.2 4.0
1980 4.8 4.8 4.8 1
1982 3.8 5.0 5.5 3
1983 16 7.0 16 6.0 6.0 6.0 1 2.8 2.8 2.8
1987 16 60 10.5 14.0 21 5.8 6.2 6.5 3
1988 14 9.0 5.2 6.0 6.8 5
1989 3.0 4.8 6.1 5
1990 16 49 7.0 9.3 5.0 5.9 7.0 6
1991 14 6.9 5.4 6.3 7.5 5
1992 15 7.0 5.2 5.9 7.2 6 2.1 3.0 4.8
1993 14 6.9 5.4 6.5 8.2 5
1994 5.5 6.5 7.6 5
1995 18 6.9 8.2 6.0 6.9 8.0 5
1996 5.6 6.6 8.2 6
1997 5.5 6.8 8.1 9
1998 15 6.8 7.8 5.1 6.1 7.8 6 2.6 3.3 4.6
1999 5.5 6.9 8.6 13
2000 5.0 6.1 7.1 8
2001 15 7.0 7.2 5.8 6.9 8.5 7 2.3 2.9 4.1
2002 4.5 6.8 8.2 6
2003 5.7 6.8 7.6 11
2004 15 7.0 8.2 5.6 7.0 8.7 6 2.4 7.4 26.7
2005 4.8 6.4 8.0 7
2006 10 17 91 7.5 8.0 4.8 5.8 7.1 8
2007 18 7.0 7.7 4.9 6.6 7.7 9 2.7 4.8 9.3
2008 4.8 6.3 7.5 7
2009 19 5.2 6.0 7.2 8
2010 19 6.8 17 5.2 6.8 8.0 9 1.8 2.9 3.8
2011 4.6 6.5 7.5 6
2012 5.0 6.7 8.3 12
2013 19 10.8 6.2 7.1 7.8 7 2.0 3.8 9.0
2014 10 18 91 7.4 7.0 10 5.2 6.5 7.4 10 2.6 2.6 2.6
2015 6.0 6.9 7.9 10
2016 20 9.2 5.9 7.1 8.9 7 1.9 3.1 5.6
2017 6.5 7.1 8.2 12

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
10 17 71 7 9.3 9.9 14 3 6.3 8.9 6.6 1.8 3.6 27

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2014-09-19
2015-08-12
2015-09-15
2016-08-12
2016-08-26
2016-09-26
2017-08-28
2017-09-22
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 18.8 8.1 24.2 7.6 22.9 8.5 25.8 8.0 24.9 8.9 19.5 7.5 24.0 8.4 20.5 9.0
1 18.8 8.1 23.9 7.6 22.9 8.4 25.4 8.1 24.9 8.4 19.4 7.4 23.3 8.5 20.5 9.0
2 18.8 8.1 23.7 7.6 22.8 8.5 25.3 8.1 24.7 8.5 19.4 7.4 23.1 8.6 20.5 9.0
3 18.7 8.1 23.7 7.6 22.7 8.5 24.8 8.1 24.7 8.5 19.3 7.4 22.9 8.6 20.4 9.0
4 18.7 8.0 23.6 7.6 22.7 8.5 24.7 7.9 24.6 8.4 19.3 7.4 22.8 8.5 20.4 9.0
5 18.7 8.0 23.6 7.6 22.7 8.5 24.6 7.8 24.4 8.4 19.3 7.4 22.8 8.5 20.4 8.9
6 18.7 8.0 21.4 8.7 22.6 8.4 22.1 8.2 23.5 8.4 19.3 7.4 20.1 9.8 20.4 8.9
7 18.6 8.1 16.7 7.3 19.1 2.5 17.5 5.1 19.1 3.9 19.3 7.4 16.1 4.8 19.3 5.9
8 15.4 0.2 13.9 3.1 15.4 0.5 15.1 3.9 15.8 3.1 19.1 7.4 12.7 4.2 15.0 1.1
9 11.5 1.0 11.1 3.7 12.2 1.9 12.7 5.0 13.4 4.2 14.1 1.5 9.8 5.8 10.9 4.8
10 9.7 2.0 9.5 4.1 10.2 2.8 11.1 4.5 11.3 3.9 11.7 2.2 8.4 4.4 8.7 4.8
11 8.8 2.6 8.6 4.1 9.0 3.2 9.8 4.3 9.9 3.3 10.1 1.6 7.4 5.0 7.6 4.4
12 8.3 2.6 8.1 4.1 8.3 2.3 8.9 4.6 9.0 3.7 9.0 1.7 6.9 4.5 7.0 4.5
13 8.0 1.2 7.8 3.7 7.9 2.0 8.4 3.8 8.4 3.4 8.5 1.1 6.6 4.2 6.8 3.5
14 7.7 0.5 7.6 3.0 7.6 0.6 7.8 3.2 7.9 2.9 7.9 0.6 6.4 3.5 6.5 3.0
15 7.5 0.2 7.4 1.7 7.4 0.5 7.5 1.6 7.7 1.9 7.7 0.5 6.3 2.0 6.3 0.3
16 7.2 0.2 7.2 1.1 7.2 0.5 7.4 0.7 7.5 1.2 7.5 0.5 6.2 0.2 6.3 0.2
17 7.2 0.2 7.1 0.9 7.1 0.5 7.3 0.6 7.3 1.1 7.3 0.5 6.1 0.2 6.2 0.2
18 7.1 0.2 7.0 0.9 7.0 0.5

Recent temperature and dissolved oxygen profile plots

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