Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
T17 R04 WELS AROOSTOOK 68 1 0.29 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
50 m
(163 ft) 		15 m
(49 ft) 		2,715 ha
(6,709 ac) 		406,374,688 m3
(329,453 ac-ft) 		195 km2
(75 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
1980 21 72 1.8 3.2 4.0 5
1981 3.0 3.0 3.0 1
1987 3.1 5.9 10.0 6
2010 3.0 4.0 5.7 3
2011 3.2 5.3 7.6 4
2012 3.5 5.3 6.8 6
2013 4.2 5.7 7.7 4
2014 4.7 5.3 5.8 4
2015 5.2 5.8 7.1 3
2016 5.8 5.8 5.8 2
2017 4.6 5.7 7.2 3

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
21 72 1.8 5 10 3.7 Inf 1

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1980-09-18
Depth (m) TEMP DO
0 15 8.8
1 15 8.7
2
3
4
5 15 8.7
6
7
8
9 15 8.6
10 14 8.0
11
12 14 8.2
13
14
15 14 7.6

Recent temperature and dissolved oxygen profile plots

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