Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
T03 R12 WELS PISCATAQUIS 49 1 2.07 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
46 m
(150 ft)
11 m
(37 ft)
8,484 ha
(20,964 ac)
935,730,889 m3
(758,609 ac-ft)
780 km2
(301 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
1977 10 3.5 3.5 3.5 1
1978 4.1 4.8 5.2 4
1979 14 38 4 9 4.0 4.5 5.2 2 1.7 1.7 1.7
1982 23 7 9 5.0 5.0 5.0 1 2.0 2.0 2.0
1983 2.6 3.1 3.5 6
1984 2.0 2.1 2.2 2
2001 10 30 7.1 8 4.9 4.9 4.9 1 3.5 3.5 3.5

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
12 30 7.1 6.3 9.3 2 4 5.2 2.4 1.7 2.4 3.5

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1978-08-06
1978-08-12
1978-08-27
1979-08-05
1979-08-26
1979-09-11
1982-08-16
2001-08-22
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 21 9 22 9.0 21 8.2 16.2 9.1 20.2 9.0 23 8.2
1 22 8.2
2 24 7.2 19 8.0 16.2 9.1 18.8 9.0 22 8.2
3 23 7.2 19 7.8 22 8.2
4 16.2 9.1 18.2 8.9 22 8.2
5 23 7.2 19 7.8 22 8.2
6 22 7.0 19 7.6 16.2 9.1 18.2 8.8 22 8.1
7 22 8.2
8 20 9 21 8.2 20 8.0 22 7.2 18 7.6 16.2 9.0 18.0 8.8 22 8.2
9 21 7.0 18 7.4 22 8.2
10 16.2 9.0 18.0 8.8 22 8.1
11 20 7.0 18 7.4 20 7.0
12 18 6.8 18 7.2 16.2 9.0 18.0 8.8 18 6.1
13 17 5.8
14 17 6.8 18 7.2 16.2 9.0 17.5 7.9 18 5.7
15 20 9 16 6.6 17 6.5 16 6.6 18 7.2 16 5.6
16 16.2 9.0 13.5 7.1
17 16 6.6 18 7.0 14 5.2
18 14 6.6 14 5.4 16.2 8.8 12.8 6.9
19 13 5.1
20 13 6.4 14 5.2 16.1 8.8 12.0 6.8
21 12 6.4 14 5.0 13 4.9
22 12.5 6.0 11.5 6.8
23 12 6.2 13 4.8 12 4.7
24 12 7 12 5.0 13 5.0 11 6.2 12 4.6 10.0 5.2 11.5 6.7
25 12 4.3
26 11 6.2 12 4.2 9.3 4.9 9.5 6.8
27 11 6.0 12 3.4 12 4.2
28 9.1 4.7 8.8 6.5 12 4.1
29
30 9.0 4.6 8.2 6.3
31
32
33
34
35 8.8 4.3 8.0 6.0

Recent temperature and dissolved oxygen profile plots

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