Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
DAMARISCOTTA LINCOLN 7 1 1.8 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
4 m
(12 ft) 		2 m
(7 ft) 		60 ha
(148 ac) 		1,173,917 m3
(952 ac-ft) 		3 km2
(1.1 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
1978 1.9 1.9 1.9
1988 12.0 1.3 2.8 3.0 7 20
1989 3.0 3.0 3.0 6 15
1990 5.5 27 6.3 16 3.0 3.0 3.7 6 13 4.5 4.5 4.5
1991 3.0 3.4 3.9 7 3
1992 3.3 3.6 3.7 6 8
1993 3.1 3.5 3.9 6 7
1994 2.0 15 3.1 3.5 3.8 6 9 2.9 2.9 2.9
1995 2.5 3.4 3.8 6 9
1996 3.5 3.7 3.8 6 10
1997 3.0 3.4 3.6 6 9
1998 3.2 3.5 3.7 5 12
1999 3.4 3.5 3.7 5 18
2000 5.0 30 23 3.2 3.6 3.8 6 5 5.3 5.3 5.3
2001 3.3 3.6 3.8 5 3
2002 3.2 3.6 3.9 5 7
2003 3.3 3.6 3.9 5 4
2004 3.5 3.6 3.9 5 3
2005 41 3.0 25 6.4 14 3.1 3.5 3.9 6 2
2006 3.2 3.6 3.9 5 4
2007 3.1 3.7 4.0 5 5
2008 31 3.4 24 6.5 27 1.5 3.1 3.9 6 2 25.0 25.0 25.0
2009 35 1.2 2.5 3.6 6 35.0 35.0 35.0
2010 23 1.1 3.0 4.0 7 1 19.0 19.0 19.0
2011 2.8 3.5 3.9 7 3
2012 3.2 3.7 4.0 7 6
2013 2.8 3.6 4.1 7 4
2014 3.2 3.5 4.1 6
2015 22 5.0 25 6.7 16 3.0 3.3 3.9 5 1 4.7 4.7 4.7
2016 5.0 31 6.6 22 3.2 3.5 3.8 7 5 5.3 5.3 5.3
2017 2.6 3.1 3.5 3

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 5.1 27 6.5 22 14 1.1 3.4 4.1 5.8 1.9 12 35

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2015-08-30
2015-09-09
2016-08-17
2016-08-30
2016-09-02
2016-09-16
2017-09-04
2017-09-30
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 26 7.8 26 8.0 26 7.4 25 7.9 24 7.3 21 8.2 20 8.8 20 7.8
1 24 8.1 25 8.0 26 7.3 25 7.8 24 7.3 21 8.1 20 8.5 20 7.8
2 24 7.9 24 8.1 25 7.0 24 7.5 24 7.4 21 7.8 19 8.5 20 7.7
3 24 7.0 25 6.7 24 7.4 24 7.4 21 7.7 19 0.1 20 7.7
4 24 6.1 24 7.1

Recent temperature and dissolved oxygen profile plots

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