Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
LITCHFIELD KENNEBEC 12 1 1.59 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
6 m
(20 ft) 		3 m
(11 ft) 		18 ha
(44 ac) 		540,000 m3
(438 ac-ft) 		2 km2
(0.6 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
1982 4.0 4.0 4.0 3
1983 20 11 13 4.8 4.8 4.8 1 3.1 3.7 4.3
1994 3.2 4.0 4.7 5
1995 18 7.0 15 3.7 4.6 5.6 6
1996 21 6.9 11 5.0 5.0 5.0 1 3.6 3.6 3.6
1997 3.3 4.1 4.6 6
1998 20 7.1 14 4.8 4.9 5.0 2 2.8 4.0 5.2
1999 14 4.7 4.9 5.1 2 5.8 5.8 5.8
2000 13 6.9 14 3.4 4.4 5.2 6 5.8 5.8 5.8
2001 3.5 4.9 5.6 6 1
2002 3.2 4.6 5.2 7
2003 22 7.2 14 3.9 4.7 5.2 8 1 5.7 5.7 5.7
2004 16 7.0 10 3.9 4.7 5.5 5 1 2.8 2.8 2.8
2005 17 13 3.6 4.5 5.2 4 7.0 7.0 7.0
2006 17 23 83 7.3 15 3.5 4.2 5.2 5 9.4 9.4 9.4
2007 22 7.1 10 3.9 4.7 5.5 5 2 3.1 3.1 3.1
2008 4.5 5.4 5.7 6 4
2009 24 3.9 4.8 5.5 5 2
2010 23 15 4.7 5.2 5.5 6 2 2.9 5.3 13.0
2011 4.5 4.9 5.3 4
2012 4.2 5.0 5.4 4 1
2013 23 18 3.9 4.3 4.9 5 6.6 10.1 13.0
2014 4.4 5.3 5.5 6 5
2015 4.5 5.3 5.5 4 4
2016 25 16 3.3 5.1 5.5 6 4 1.8 4.1 8.6
2017 1.8 4.2 5.3 6 1

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
17 20 83 7 14 13 1.8 4.7 5.7 4.8 1.8 5.4 13

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2014-08-19
2014-09-18
2015-08-10
2015-09-22
2016-08-22
2016-09-30
2017-08-18
2017-09-28
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 24 7.9 19 7.9 26 7.8 22 7.7 25 8.1 18 8.7 24 8.0 23 12.1
1 22 8.0 19 7.8 25 7.8 22 7.8 25 8.1 18 8.7 24 8.0 23 12.0
2 22 7.8 19 7.8 25 7.9 22 7.3 25 8.1 18 8.7 24 7.6 23 12.0
3 22 7.7 18 7.1 24 7.5 22 6.0 25 8.1 17 8.4 24 7.9 21 13.7
4 21 3.3 18 7.4 23 3.5 22 6.8 24 6.1 17 8.4 23 7.0 20 8.9
5 18 3.3 18 6.8 20 0.7 21 5.7 22 0.8 17 8.3 18 0.3 19 0.3

Recent temperature and dissolved oxygen profile plots

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