Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
DAMARISCOTTA LINCOLN 7 1 0.63 flushes/yr 109 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
14 m
(45 ft) 		6 m
(18 ft) 		28 ha
(69 ac) 		1,528,686 m3
(1,239 ac-ft) 		1 km2
(0.5 mi2)

Secchi Disk Transparency Graphs

Graph Legend: Secchi symbols = average Secchi Disk Transparency Values; tick marks = maximum and minimum values for each year.

## [1] "No 2018 Secchi Disk Transparency Data"

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 4.0 1.5 1.9 2.4 2
1975 6.0 21 85 2.6 3.1 3.4 3
1976 6.0 33 21 17 112 2.0 4.4 7.1 9 3.7 15.6 36.1
1977 7.3 38 24 22 1.7 3.5 5.5 10 2.4 10.6 17.7
1978 9.3 47 28 106 107 3.2 4.7 5.8 6 1.3 3.2 7.7
1981 14 7.0 7.3 7.7 2 1.6 1.6 1.6
1984 14 89
1988 6.5 7.0 7.4 4
1997 9.0 42 7.1 4 67 6.9 7.5 8.2 4 1.9 1.9 1.9
1998 5.5 6.6 7.2 3
1999 5.6 6.6 7.7 2
2000 6.3 7.0 7.6 3
2001 6.1 6.8 8.1 3
2002 9 8.0 42 3 24 6.1 7.2 8.6 3 2.1 2.8 3.4
2003 8.1 8.6 8.8 3
2004 8 7.8 7.8 7.8 1
2005 7.1 7.6 8.1 2
2006 7.7 7.7 7.7 1
2007 7 5.7 40 7.1 9 24 6.8 7.1 7.3 2 2.0 2.0 2.0

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
8 6.9 38 7.1 15 38 47 101 1.5 6.2 8.8 3.5 1.3 5.4 36

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2003-08-15
2003-08-26
2003-09-08
2004-08-27
2005-09-07
2006-08-22
2007-08-16
2007-09-02
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 26.0 8.4 27 10.1 24.0 7.2 24.0 8.5 24 8.3 23.9 8.9 24.6 8.3 23.3 8.4
1 25.5 10.0 27 10.0 23.0 8.1 23.2 8.3 24 8.5 23.8 8.9 24.5 8.3 23.1 8.3
2 25.5 10.0 27 10.0 23.0 8.0 23.0 8.5 23 8.5 23.5 8.8 24.3 8.3 22.9 8.3
3 25.0 9.1 27 10.0 22.5 8.2 22.8 8.4 23 8.4 23.3 8.8 23.9 8.4 22.8 8.3
4 25.0 8.0 26 10.0 22.5 8.4 22.8 8.5 23 8.4 23.2 8.7 23.5 8.3 22.7 8.2
5 24.0 7.4 26 10.0 22.0 8.2 22.5 8.5 23 8.4 23.1 8.6 22.5 8.9 21.9 8.3
6 22.0 7.4 26 10.1 22.0 8.1 22.2 8.3 22 8.5 19.2 10.4 16.9 12.8 18.3 11.3
7 17.0 7.3 20 10.1 21.5 7.5 20.0 9.0 18 9.8 15.0 6.2 12.4 13.2 14.5 11.4
8 14.0 7.2 16 12.4 16.5 9.0 15.8 7.4 15 9.1 12.6 1.5 9.7 10.9 10.5 10.9
9 11.0 6.0 14 8.4 14.0 6.5 13.0 4.6 13 7.9 10.8 1.2 8.0 4.1 8.6 4.9
10 10.0 4.5 11 3.0 11.5 4.5 10.2 1.0 12 2.0 9.2 1.1 7.0 0.2 7.5 2.5
11 8.5 4.0 10 1.2 10.0 1.1 9.6 0.4 10 0.9 8.4 1.0 6.4 0.1 6.8 1.9
12 8.5 2.1 10 0.4 9.0 0.4 8.5 0.2 9 0.5 7.9 0.9 6.2 0.1 6.4 1.7
13 7.5 1.6 10 0.3 8.5 0.2 8.4 0.1 7.8 0.8
14 7.5 1.2 10 0.2
15 7.0 0.8 10 0.2
16 10 0.1

Most recent temperature and dissolved oxygen profile plots

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