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Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
MONSON PISCATAQUIS 31 1 1.34 flushes/yr 616 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
28 m
(92 ft) 		9 m
(29 ft) 		141 ha
(348 ac) 		12,426,141 m3
(10,074 ac-ft) 		14 km2
(5.3 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 2018 Secchi Disk Transparency Data"

Water Chemistry and Trophic State Parameters

Table Legend:

Color: Color (SPU), Alk: Alkalinity (mg/l CaCO3), SpCon: Specific Conductivity (μS/cm), pH: pH (standard units)

TP = Total Phosphorus (μg/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 (μg/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
2001 8 36 7.2 4 8 8 8 1 1.6 1.6 1.6

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 36 7.2 4 8 8 8 1 1.6 1.6 1.6

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2001-08-31
Depth (m) TEMP DO
0 21.9 8.7
1 21.8 8.7
2 21.7 8.7
3 21.5 8.7
4 21.4 8.7
5 21.3 8.6
6 21.0 8.6
7 20.1 8.8
8 13.6 9.8
9 10.5 8.9
10 9.5 7.8
11 8.4 6.9
12 7.9 6.4
13 7.7 6.0
14 7.5 5.8
15 7.4 5.7
16 7.3 5.4
17 7.1 5.4
18 7.0 5.1
19 7.0 5.0
20 6.9 4.8
21 6.8 4.5
22 6.8 4.2
23 6.8 4.1
24 6.8 3.8
25 6.8 3.8
26 6.8 3.6

Most recent temperature and dissolved oxygen profile plots

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