Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
MONSON PISCATAQUIS 31 1 0.57 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
31 m
(102 ft)
5 m
(17 ft)
253 ha
(625 ac)
13,276,172 m3
(10,763 ac-ft)
10 km2
(4 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 1.8 3.4 5.8 6 2
1982 7 28 5 6 5.6 5.6 5.6 1 2.3 2.3 2.3

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
7 28 5 6 1.8 4.5 5.8 3.5 2.3 2.3 2.3

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1982-09-01
Depth (m) TEMP DO
0 17.1 8.9
1
2 17.1 8.8
3
4 17.1 8.5
5
6 17.0 8.6
7
8 16.8 8.0
9 11.8 4.7
10 8.2 5.2
11 7.5 5.4
12 6.8 5.5
13 6.5 5.5
14 6.1 5.5
15 6.0 5.3
16 5.8 5.2
17 5.7 5.0
18 5.6 4.9
19
20 5.5 4.6
21
22 5.5 4.5

Recent temperature and dissolved oxygen profile plots

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