Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
T01 R11 WELS PISCATAQUIS 42 1 7.61 flushes/yr 913 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
27 m
(90 ft) 		9 m
(31 ft) 		94 ha
(232 ac) 		8,790,434 m3
(7,127 ac-ft) 		10 km2
(3.8 mi2)

Secchi Disk Transparency Graphs

Graph Legend: Secchi symbols = average Secchi Disk Transparency Values; tick marks = maximum and minimum values for each year.

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 2.7 2.7 2.7 1
1989 8.3 23 4.0 5.8 5.8 5.8 1 1.6 1.6 1.6
2000 5.0 5.0 5.0 1
2018 29 10.0 6.9 5.5 21 3.6 4.3 4.6 2 3.0 3.0 3.0

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
29 9.2 23 6.9 4.8 21 2.7 4.4 5.8 1.2 1.6 2.3 3

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2018-09-11
Depth (m) TEMP DO
0 19.0 8.7
1 19.0 8.6
2 19.0 8.6
3 19.1 8.6
4 19.1 8.6
5 19.0 8.5
6 19.0 8.4
7 13.7 4.4
8 10.1 6.2
9 8.8 7.0
10 8.3 7.0
11 7.0 7.3
12 6.5 7.7
13 6.0 7.9
14 5.5 8.1
15 5.3 7.8
16
17 5.1 6.3
18
19 4.9 4.3
20
21 4.8 2.2
22 4.8 1.9
23 4.8 1.3
24 4.8 0.9

Most recent temperature and dissolved oxygen profile plots

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