Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
T01 R11 WELS PISCATAQUIS 50 1 2.16 flushes/yr 646 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
34 m
(110 ft)
15 m
(48 ft)
401 ha
(990 ac)
58,927,808 m3
(47,774 ac-ft)
56 km2
(22 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
1974 3.5 3.5 3.5 1
1989 6 21 3.0 7.6 7.6 7.6 1 1.5 1.5 1.5
1996 6 23 4.0 4 6.0 6.0 6.0 1 1.9 1.9 1.9
2000 3.8 4.4 5.0 1
2001 6 24 7.1 5.0 6.8 6.8 6.8 1 1.4 1.4 1.4
2018 25 8 7.0 3.5 7 7.2 7.2 7.2 2 2.0 2.0 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
25 6.5 23 7 3.9 5.5 3.5 5.9 7.6 1.2 1.4 1.7 2

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1996-08-28
2001-08-16
2018-09-11
Depth (m) TEMP DO TEMP DO TEMP DO
0 21.2 8.3 23.2 8.7 19.4 8.9
1 21.1 8.3 23.0 8.8 19.4 8.9
2 20.8 8.4 23.0 8.8 19.5 8.9
3 20.5 8.3 22.4 8.7 19.5 8.9
4 20.4 8.3 21.3 8.4 19.5 8.8
5 20.3 8.1 20.0 7.9 19.6 8.8
6 20.2 8.0 17.6 7.5 19.6 8.8
7 18.4 7.4 15.0 7.3 19.6 8.7
8 16.8 7.1 13.9 7.3 17.6 7.3
9 14.7 6.9 13.6 7.3 16.2 6.7
10 13.1 7.3 12.4 7.4 15.3 6.5
11 12.4 7.6 12.0 7.5 14.8 6.5
12 11.8 7.8 11.3 7.6 14.5 6.5
13 11.1 7.8 11.0 7.6 13.2 6.5
14 10.2 7.9 10.4 7.6 12.5 6.5
15 9.8 7.9 9.9 7.6 11.8 6.5
16 9.2 7.9
17 8.3 8.0 8.1 7.8 9.2 7.0
18 8.0 8.1
19 7.8 8.3 7.9 7.8 8.2 6.9
20 7.8 7.9
21 7.4 7.9 7.6 7.7 7.6 6.8
22 7.3 7.8
23 7.3 7.9 7.2 7.7 7.4 6.7
24 7.2 7.9
25 7.2 7.8 7.1 7.6 7.2 6.7
26 7.1 7.6
27 7.1 7.4 7.0 7.4
28 7.1 7.3
29 7.0 7.0
30 7.0 6.7 7.0 5.5

Most recent temperature and dissolved oxygen profile plots

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