Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
LINCOLN PENOBSCOT 34 1 1.03 flushes/yr 275 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
9 m
(30 ft) 		3 m
(10 ft) 		297 ha
(734 ac) 		8,976,281 m3
(7,277 ac-ft) 		16 km2
(6.2 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 2.8 3.3 3.6 2
1974 3.4 3.6 4.0 4
1975 4.3 4.4 4.4 3
1976 3.4 3.8 4.0 2
1981 7.0 35 18 3.7 3.7 3.7 1 3.6 3.6 3.6
2001 3.7 22 6.8 13 14 4.0 4.0 4.0 1 6.1 6.1 6.1

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
5.3 28 6.8 16 14 2.8 3.8 4.4 2.2 3.6 4.8 6.1

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1974-08-02
1974-09-02
1975-08-28
1976-08-02
1976-08-30
1981-09-10
2001-08-15
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 19 8.7 26 7.7
1 19 8.7 25 7.6
2 22 8.5 21 8.5 20 8.7 20 8.4 21 8.7 19 8.7 24 7.6
3 21 7.8 21 8.3 20 8.6 20 7.8 21 8.6 19 8.7 24 7.6
4 19 8.7 24 7.4
5 21 7.4 21 8.1 20 8.6 20 7.4 21 8.6 18 8.6 24 6.6
6 20 6.6 20 7.5 20 8.4 20 7.2 20 8.3 21 0.3
7
8 16 0.5 17 1.0 19 7.6 15 0.8 16 1.0

Most recent temperature and dissolved oxygen profile plots

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