Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
LINCOLN PENOBSCOT 44 3 0.94 flushes/yr 309 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
14 m
(46 ft) 		3 m
(10 ft) 		43 ha
(106 ac) 		1,118,260 m3
(907 ac-ft) 		2 km2
(0.6 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
1973 4.6 4.6 4.6 3 3
1974 3.7 4.3 4.6 3 4
1975 4.6 4.6 4.6 2 2
1976 4.1 4.1 4.1 2 2
1981 6.0 30 3.0 3.7 4.3 5 9
1982 5.0 11 10 19 3.7 4.0 4.3 6 11 1.7 2.2 3.9
1983 3.7 4.2 4.4 6 11
1984 3.8 4.0 4.3 6 9
1985 4.0 4.1 4.3 5 11
1986 3.2 3.8 4.3 5 3
1987 4.0 4.2 4.4 6 10
1988 4.0 4.1 4.3 5 11
1989 3.4 3.8 4.1 6 4
1990 3.8 4.1 4.7 5 8
1991 8.5 20 7 10 3.7 4.0 4.5 6 13
1992 3.6 3.9 4.3 5 10
1993 3.0 3.7 4.0 5 8
1995 3.4 3.8 4.2 4 5
1996 3.5 4.1 4.3 6 10

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
6.5 20 7 10 19 3 4.1 4.7 4.8 1.7 2.2 3.9

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1974-08-07
1974-08-30
1975-08-08
1975-08-31
1976-08-04
1982-08-12
1991-08-28
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 22 8.4 23 8.5
1 22 8.3 22 8.5
2 23 8.4 21 8.7 24 8.2 19 8.6 21 8.9 22 8.3 22 8.5
3 23 8.3 21 8.5 24 8.2 18 8.6 21 8.5 21 8.2 22 8.4
4 21 8.5 21 8.1

Most recent temperature and dissolved oxygen profile plots

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