Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
T07 R09 WELS PISCATAQUIS 57 2 1.86 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
16 m
(52 ft) 		6 m
(20 ft) 		855 ha
(2,112 ac) 		54,999,073 m3
(44,588 ac-ft) 		64 km2
(25 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
1989 14 22 7 5.1 5.1 5.1 1 3.0 3.0 3.0
1990 19 6.6 17 11 2.9 4.0 5.2 5 4.0 5.8 7.0
1996 15 42 7 7 5.2 5.2 5.2 1 2.5 2.5 2.5

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
16 32 6.6 10 7 11 2.9 4.8 5.2 2.3 2.5 3.8 7

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1989-09-12
1990-08-17
1990-08-27
1990-09-11
1990-09-26
1996-08-27
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 19 9.3 22 8.5 24 8.3 19 7.9 14 9.5 21 8.6
1 19 9.3 21 8.5
2 19 9.2 22 8.5 24 8.3 19 7.9 14 9.8 21 8.4
3 19 9.2 21 8.3
4 19 9.0 22 8.4 22 7.5 19 7.8 14 9.7 20 7.9
5 18 8.6 20 7.4
6 17 8.3 21 8.0 21 7.2 19 7.7 14 9.4 19 6.6
7 17 8.2 19 6.3
8 17 7.9 21 7.3 20 6.7 19 7.0 14 8.8 17 4.8
9 16 7.2 17 3.9
10 16 5.4 17 4.0 16 2.2 17 2.0 14 8.8 16 2.8
11 15 3.4 15 2.1
12 15 2.9 16 3.0 16 1.9 16 1.1 14 8.5 15 2.0
13 15 2.7 15 1.9
14 15 2.4 16 2.5 16 1.8 16 1.0 14 8.3 15 1.7
15 16 2.5 16 1.5 16 0.8 14 8.4 14 1.6
16 15 2.1 15 2.2 16 1.5 16 0.8 14 6.3 14 0.7
17 14 1.3 15 2.2 16 1.5 16 0.8 14 6.3
18 15 2.2 16 1.5 16 0.8 14 6.3

Recent temperature and dissolved oxygen profile plots

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