Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
DAMARISCOTTA LINCOLN 7 1 3.12 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
19 m
(61 ft) 		10 m
(32 ft) 		145 ha
(358 ac) 		14,200,017 m3
(11,512 ac-ft) 		10 km2
(3.9 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 28.0 3.8 4.2 4.6 2
1975 4.7 4.7 4.7 1
1976 8.0 32 7 13 4.0 4.6 5.0 3 1.7 3.0 4.3
1977 4.9 4.9 4.9 1
1979 4.5 5.9 7.3 4
1980 4.2 5.4 6.2 5
1981 4.5 32 9 17 4.5 5.1 5.7 4 3.9 3.9 3.9
1982 4.6 5.6 6.5 4
1983 6.0 30 4.9 5.6 6.5 6
1984 5.7 5.7 5.7 1
1985 6.3 6.3 6.3 1
1986 5.7 5.7 5.7 1
1988 4.0 5 10 3.2 4.2 5.0 3
1989 4.5 5.3 6.5 6
1990 8.5 41 6.5 7 4.5 5.4 6.7 6 3.2 3.2 3.2
1991 4.1 5.0 5.7 6
1992 4.0 5.4 6.8 7
1993 4.2 5.4 6.6 6
1994 4.0 4.9 5.8 6
1995 4.1 4.8 5.7 6
1996 4.0 4.8 6.3 6
1997 7.2 44 6.9 6 12 3.5 4.6 5.7 7 5.0 5.0 5.0
1998 4.0 4.8 5.8 6
1999 3.6 5.5 6.8 6
2000 4.4 4.6 4.8 6
2001 4.8 5.0 5.5 3
2002 21 8.0 51 7 12 4.9 5.4 6.5 4 4.6 5.2 5.9
2003 5.8 6.1 6.5 3
2004 4.6 4.8 5.2 4
2005 4.0 4.9 5.1 4
2006 4.2 4.6 5.4 5
2007 7 4.6 5.1 5.7 3
2008 21 5.2 41 6.8 6 7 14 4.3 5.0 5.6 5 5.1 5.1 5.1
2009 4.2 4.5 5.1 3
2010 4.0 4.7 5.4 6
2011 7 4.3 4.9 5.8 8 5.2 5.2 5.2
2012 4.4 4.8 5.4 7
2013 4.2 4.9 5.8 5
2014 8.5 50 7 4.4 4.7 5.6 6 7.1 7.1 7.1
2015 14 7.0 47 6.9 5 11 5.3 5.5 6.2 5 2.5 2.5 2.5
2016 4.6 5.3 6.8 5
2017 4.8 5.2 5.7 4

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
19 8.6 41 6.7 6.6 7 13 13 3.2 5.1 7.3 4.5 1.7 4.5 7.1

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2015-08-30
2015-09-09
2015-09-12
2016-08-16
2016-09-03
2016-09-15
2017-08-09
2017-09-29
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 25.9 8.6 24.7 8.4 23.5 7.8 25.5 8.0 23.2 7.7 22.3 8.0 24.0 8.0 20.9 8.2
1 24.8 8.7 24.7 8.4 23.5 7.7 25.5 8.0 23.2 7.8 22.2 8.0 24.0 7.9 20.9 8.2
2 24.7 8.8 24.7 8.3 23.2 7.7 25.3 8.0 23.2 7.8 22.1 8.0 23.9 7.9 20.9 8.2
3 24.5 8.7 24.3 8.1 23.0 7.8 25.2 8.0 23.2 7.8 22.1 8.0 23.7 7.8 20.9 8.2
4 24.3 8.5 23.9 7.9 22.8 7.7 24.8 7.7 23.2 7.7 22.1 7.9 23.4 7.8 20.8 8.2
5 21.6 5.1 23.1 6.8 22.8 7.6 23.9 7.1 23.1 7.7 22.0 7.9 23.1 7.3 20.6 8.1
6 19.8 3.4 20.2 3.0 20.5 2.8 20.4 4.3 22.9 7.1 21.8 7.1 21.3 5.2 20.5 7.7
7 17.2 2.5 17.8 2.1 18.3 1.7 16.4 4.0 18.2 2.4 18.5 1.6 17.0 3.7 19.4 6.2
8 14.9 2.4 16.0 2.0 15.8 1.3 14.3 4.0 14.6 2.4 14.2 1.9 14.5 4.0 18.0 4.2
9 12.4 2.8 13.4 2.5 13.2 2.0 11.8 4.2 12.2 2.4 12.0 2.0 12.3 3.7 15.4 1.3
10 10.3 2.7 11.3 2.1 11.6 1.2 10.5 3.7 10.7 3.1 10.5 2.7 10.9 4.1 9.8 1.8
11 9.1 2.9 10.2 2.1 10.2 1.9 9.9 4.2 10.1 3.7 9.9 2.0 9.7 4.3 9.2 1.4
12 8.8 2.7 9.2 2.5 8.8 1.7 9.4 4.0 9.6 3.2 9.4 2.2 8.9 4.5 8.9 1.5
13 8.4 2.8 8.8 2.3 8.5 1.7 9.1 4.0 9.3 3.0 9.2 1.8 8.5 4.1 8.7 1.1
14 8.3 2.8 8.5 2.0 8.4 1.7 9.1 3.7 9.2 2.7 9.1 1.6 8.4 3.9 8.6 1.0
15 8.2 2.6 8.4 1.7 8.3 1.4 9.0 3.4 9.0 2.2 9.0 0.8 8.4 3.9 8.5 0.8
16 8.2 2.5 8.3 1.3 8.2 0.9 8.9 3.1 8.9 1.2 8.9 0.2 8.3 3.8 8.5 0.5
17 8.1 0.1 8.2 0.8 8.1 0.5 8.8 2.4 8.8 0.7 8.9 0.1 8.3 3.2 8.4 0.4
18 8.1 0.3 8.8 0.6 7.6 6.3
19 7.5 6.1
20 7.4 6.1
21 7.3 6.3
22
23
24 7.2 6.2
25
26
27 7.1 6.1
28
29
30 6.8 4.9

Recent temperature and dissolved oxygen profile plots

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