Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
T05 R09 WELS PISCATAQUIS 51 1 3.94 flushes/yr 981 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
18 m
(60 ft) 		10 m
(34 ft) 		42 ha
(104 ac) 		4,400,575 m3
(3,568 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.

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 8 19 8 10 7.3 8.3 9.5 4 1.2 1.3 1.4
2009 8.2 8.2 8.2 1
2012 3 9.2 9.2 9.2 1
2016 5 8 17 7.1 4 10.8 10.8 10.8 1 1.2 1.2 1.2
2018 7 6 17 7.1 4 6 6.9 9.1 10.3 2 1.0 1.5 2.0

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
6 7.3 18 7.1 5.3 3 8 6.9 9.1 11 1.8 1 1.3 2

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1981-09-01
2009-08-06
2016-09-08
2018-08-07
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO
0 19.8 8.8 20.8 9.1 20.9 9.0 24.8 8.3
1 20.7 9.1 20.7 9.0 24.5 8.3
2 19.2 8.8 20.3 9.1 20.5 9.0 24.2 8.3
3 19.5 9.4 20.2 9.0 23.7 8.4
4 18.0 9.0 16.9 10.2 19.8 9.0 23.3 8.4
5 16.5 9.3 15.0 10.3 19.6 9.0 21.9 8.8
6 16.0 9.3 13.6 10.5 19.3 8.9 18.7 9.8
7 15.5 9.5 12.4 10.4 16.6 9.7 14.7 10.3
8 15.0 9.5 11.6 10.5 14.1 10.4 12.1 10.6
9 14.5 9.5 10.7 10.4 12.6 10.4 10.8 10.4
10 12.0 9.7 9.8 10.3 11.4 10.5 9.2 11.1
11 9.0 8.2 9.1 9.7 10.5 10.4 8.6 10.5
12 8.8 7.2 8.5 9.0 9.2 9.5 8.0 10.3
13 8.3 8.7 8.6 8.4 7.5 9.6
14 7.5 3.6 8.1 8.2 8.2 7.6 7.1 8.7
15 7.7 7.1 7.9 6.5 6.7 7.9
16 6.5 5.7
17 7.7 4.0 6.3 4.9
18 7.5 3.5 6.3 4.8

Most recent temperature and dissolved oxygen profile plots

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