Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
BOOTHBAY HARBOR LINCOLN 7 1 3.58 flushes/yr 5 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
10 m
(34 ft) 		4 m
(12 ft) 		34 ha
(84 ac) 		1,128,662 m3
(915 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
1983 3.0 3.8 4.5 4
1984 4.0 4.5 5.2 6
1985 24 14 3.5 4.5 6.0 7
1986 1.9 3.9 5.0 5
1987 4.0 4.4 5.0 6
1988 1.7 3.4 4.5 7 9.9 9.9 9.9
1989 3.5 4.2 4.7 6
1997 15 5887 7.3 10 6525 3764 4.6 4.9 5.3 2
1998 14 500 9 240 4.2 4.5 4.9 1 2.5 2.5 2.5
1999 2.4 4.0 5.8 6
2000 2.0 3.8 5.2 6
2001 2.8 3.9 4.8 6
2002 13 15 806 8 8000 2.2 4.8 6.5 5 2.6 2.6 2.6
2003 31 3.0 4.2 5.2 6
2004 3.4 4.5 5.3 6
2005 2.0 3.9 4.9 5
2006 3.1 4.4 5.0 5
2007 15 10 35 7.2 16 8124 2.8 4.0 4.6 5 4.1 4.1 4.1
2008 2.6 3.3 4.1 8
2009 3.0 4.2 5.0 8
2010 12 2.1 3.4 4.3 7
2011 3.1 3.8 4.2 9
2012 17 15 1336 7.3 15 30 2.5 3.3 4.2 8 2.9 2.9 2.9
2013 3.0 3.7 4.3 9
2014 2.7 3.8 4.3 10
2015 3.4 4.1 4.4 8
2016 2 22 323 7.5 9 3264 4.0 4.4 4.8 10 1.4 1.4 1.4
2017 12 26 3180 7.7 8 3.2 4.2 4.8 10 1.1 1.1 1.1
2018 3.6 4.0 4.3 5

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
12 18 1724 7.4 11 22 4364 3764 1.7 4.1 6.5 6.4 1.1 3.5 9.9

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1988-08-22
1997-08-15
1998-08-24
2002-08-21
2007-08-14
2012-08-30
2016-08-08
2017-08-17
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 15.5 8.3 23 8.3 24 8.3 26 7.9 23 7.5 25 8.2 25 8.6 24 8.6
1 16.5 8.2 23 8.3 23 8.2 26 8.0 23 7.5 24 8.1 25 8.6 24 8.6
2 16.5 8.4 23 8.2 23 8.3 25 8.0 23 7.5 24 7.9 25 8.6 24 8.6
3 16.4 8.4 23 8.3 23 7.8 25 7.9 23 7.5 24 10.2 25 8.8 24 11.0
4 16.0 2.6 23 9.7 22 6.4 25 7.8 23 7.2 20 0.4 26 23.9 24 6.3
5 13.0 0.5 20 8.5 18 2.0 21 5.2 17 0.7 14 0.2 19 0.6 17 0.7
6 12.5 0.2 13 0.4 14 0.2 17 0.6 13 0.4 12 0.2 13 0.4 14 0.7
7 9.0 0.1 11 0.2 12 0.1 13 0.4 11 0.3 11 0.1 11 0.3 12 0.7
8 8.3 0.0 11 0.2 12 0.0 12 0.4 11 0.2 11 0.1 11 0.3 12 0.7
9 8.0 0.0 11 0.2 12 0.0 12 0.3 11 0.1 12 0.8
10 8.0 0.0 10 0.1 11 0.1 12 0.8

Most recent temperature and dissolved oxygen profile plots

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