Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
T01 R11 WELS PISCATAQUIS 50 1 2.16 flushes/yr
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.

## [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
1974 3.5 3.5 3.5 1
1989 6 21 3 7.6 7.6 7.6 1 1.5 1.5 1.5
1996 6 23 4 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 6.8 6.8 6.8 1 1.4 1.4 1.4

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 23 7.1 4 4 3.5 5.7 7.6 1 1.4 1.6 1.9

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1989-09-19
1996-08-28
2001-08-16
Depth (m) TEMP DO TEMP DO TEMP DO
0 16.6 9.4 21.2 8.3 23.2 8.7
1 16.8 9.3 21.1 8.3 23.0 8.8
2 16.4 9.3 20.8 8.4 23.0 8.8
3 16.2 9.3 20.5 8.3 22.4 8.7
4 16.2 9.3 20.4 8.3 21.3 8.4
5 16.2 9.2 20.3 8.1 20.0 7.9
6 16.1 9.1 20.2 8.0 17.6 7.5
7 16.0 9.1 18.4 7.4 15.0 7.3
8 15.9 8.7 16.8 7.1 13.9 7.3
9 15.0 8.3 14.7 6.9 13.6 7.3
10 14.2 8.0 13.1 7.3 12.4 7.4
11 14.8 7.8 12.4 7.6 12.0 7.5
12 13.2 7.5 11.8 7.8 11.3 7.6
13 12.8 7.4 11.1 7.8 11.0 7.6
14 11.8 7.0 10.2 7.9 10.4 7.6
15 10.8 6.8 9.8 7.9 9.9 7.6
16 9.2 7.9
17 10.0 6.8 8.3 8.0 8.1 7.8
18 8.0 8.1
19 8.1 6.6 7.8 8.3 7.9 7.8
20 7.8 7.9
21 7.8 6.5 7.4 7.9 7.6 7.7
22 7.3 7.8
23 7.4 6.4 7.3 7.9 7.2 7.7
24 7.2 7.9
25 7.2 6.2 7.2 7.8 7.1 7.6
26 7.1 7.6
27 7.1 5.9 7.1 7.4 7.0 7.4
28 7.1 7.3
29 7.0 7.0
30 7.0 6.7

Recent temperature and dissolved oxygen profile plots

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