Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
MONMOUTH KENNEBEC 12 1 0.5 flushes/yr 270 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
8 m
(28 ft) 		6 m
(19 ft) 		156 ha
(385 ac) 		8,891,453 m3
(7,208 ac-ft) 		7 km2
(2.8 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
1982 7 14 18.0
1983 12 4.9 5.6 6.0 3 1
1986 14 10 7 11.9 7.8 7.9 8.0 3 6
1987 13 9.1 5.0 6.8 8.0 6 7
1990
1991
1992
1993 12.0 7.4 7.4 7.4 1 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
14 8.5 11 13 4.9 6.9 8 3.2 Inf 1

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1986-09-10
1987-08-11
1987-08-17
1987-08-26
1987-09-02
1987-09-15
1991-08-06
1992-08-18
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 20 9.3 23 7.9 25 8.5 21 8.5 20 8.5 23 7.9 21 8.4
1 20 9.3 23 7.9 25 8.6 22 8.2 21 8.6 20 8.5 23 7.9 21 8.4
2 20 8.8 23 7.9 25 8.5 22 8.2 20 8.6 20 8.5 23 7.8 21 8.4
3 20 8.8 23 7.9 24 8.8 22 8.1 20 8.6 20 8.4 23 7.8 21 8.4
4 20 8.8 23 7.9 24 8.8 21 8.1 20 8.6 20 8.4 23 7.8 21 8.4
5 20 8.8 23 7.8 23 8.8 21 8.2 20 8.6 20 8.4 23 7.7 21 8.4
6 20 8.8 22 7.3 23 8.7 21 8.2 20 8.5 20 8.4 23 7.6 21 8.0
7 19 8.6 22 7.2 22 8.0 21 8.2 20 8.4 20 8.4 20 4.0 20 6.4
8 19 8.5 22 7.2 20 2.8

Most recent temperature and dissolved oxygen profile plots

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