Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
LINCOLN PENOBSCOT 44 1 5.53 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
10 m
(32 ft) 		4 m
(13 ft) 		86 ha
(212 ac) 		3,554,047 m3
(2,881 ac-ft) 		3 km2
(1.3 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
1973 4.5 5.6 6.5 3
1974 5.8 6.0 6.4 3
1975 5.3 5.7 6.2 2
1976 5.8 6.1 6.7 2
1981 7 38 17.0 3.1 3.1 3.1 1 3.5 3.5 3.5
1991 10 26 6.9 9.5 4.5 5.2 6.0 2

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
8.8 32 6.9 13 3.1 5.3 6.7 2.2 3.5 3.5 3.5

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1974-08-06
1974-08-30
1975-08-09
1975-08-29
1976-08-04
1976-08-31
1981-09-10
1991-08-28
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 19 8.2 23 8.4
1 19 8.2 23 8.4
2 23 8.7 21 7.9 23 8.1 20 8.5 22 8.8 20 8.7 19 8.2 22 8.4
3 23 8.6 21 7.8 23 8.0 20 8.3 21 8.7 20 8.5 19 8.2 22 8.4
4 19 8.2 21 8.3
5 20 3.5 21 7.5 22 4.9 20 8.2 21 8.6 20 8.4 19 7.8 21 8.1
6 15 0.2 18 0.2 17 0.5 10 7.9 18 1.8 19 6.9 19 8.2 21 7.4
7 20 7.2
8 13 0.1 14 0.2 13 0.4 14 0.6 14 0.6 16 0.8 16 0.6
9 13 0.5

Recent temperature and dissolved oxygen profile plots

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