Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
LINCOLN PLT OXFORD 28 1 2.06 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
19 m
(63 ft) 		8 m
(26 ft) 		2,505 ha
(6,190 ac) 		194,820,752 m3
(157,944 ac-ft) 		244 km2
(94 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 2017 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
1981 5.0 5.3 5.7 5
1982 6.0 38 6 28 3.6 5.1 6.6 6 2.6 2.6 2.6
1983 4.5 5.2 5.8 6
1984 4.5 5.0 5.5 6
1985 3.2 4.6 6.0 6
1986 4.8 5.1 5.4 6
1987 4.7 5.2 5.8 6
1988 4.2 5.0 5.7 5
1990 7 3.5 5.3 6.5 4
1999 7.0 30 6 10 5.0 5.0 5.0 1 4.7 4.7 4.7
2000 11.0 26 5 7 4.1 4.1 4.1 1 5.4 5.4 5.4
2002 13 3.8 4.7 5.9 4
2003 4.0 5.0 5.7 5
2004 3.9 4.4 5.6 4
2006 20 7.4 25 7 5 3.6 4.7 5.4 5 3.5 3.5 3.5
2007 3.6 4.5 5.4 5
2008 3.6 4.4 5.6 5
2009 3.6 4.6 5.8 5
2010 3.6 4.5 5.4 5
2011 6 3.7 4.3 5.2 5 5.1 5.1 5.1
2012 5.1 5.1 5.1 1
2013 3.0 4.1 5.2 4
2014 3.2 4.4 5.4 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
20 7.8 30 7 5.8 9.5 15 3 4.8 6.6 4.6 2.6 4.3 5.4

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1982-08-19
1999-08-20
2000-08-18
2003-09-27
2006-08-22
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 21 8.6 22 8.5 22 8.2 18 8.9 20 7.4
1 20 8.6 22 8.5 22 8.1 18 8.9 20 7.4
2 20 8.6 22 8.5 22 8.1 18 8.9 20 7.4
3 20 8.6 21 8.3 21 8.1 18 8.7 20 7.4
4 20 8.5 21 8.3 21 8.0 18 8.7 20 7.4
5 20 8.5 21 8.3 21 8.0 18 8.7 20 7.4
6 20 8.5 21 8.3 21 8.0 18 8.5 17 7.3
7 20 8.3 21 8.2 21 8.0 18 8.4 20 7.4
8 18 5.5 21 8.0 21 8.0 18 8.4 20 7.4
9 15 2.4 19 3.7 21 8.0 18 8.4 19 5.4
10 14 1.3 18 1.3 19 2.0 18 8.4 16 2.0
11 18 8.3 14 0.4
12 16 5.1 13 0.4
13 15 5.1
14 15 3.2

Recent temperature and dissolved oxygen profile plots

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