Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
T16 R05 WELS AROOSTOOK 68 1 0.93 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
37 m
(122 ft) 		10 m
(34 ft) 		3,309 ha
(8,176 ac) 		342,693,681 m3
(277,826 ac-ft) 		180 km2
(70 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
1983 10 69 3.2 4.0 5.7 4 2.8 3.8 5.2
1986 16 64 12 18 3.2 3.5 3.8 3 6.8 8.6 10.3
1987 18 68 10 12 3.1 4.5 5.6 6 1.2 3.7 6.4
1988 11 3.4 4.7 8.0 7 1.7 5.4 18.3
1989 50 11 3.5 4.4 6.1 7 1.4 3.4 7.6
1990 44 59 7.2 12 3.0 3.9 5.3 5 2.4 4.5 7.4
1991 10 17 4.0 4.5 4.9 3 3.8 3.8 3.8
1992 21 13 13 3.0 3.6 4.9 6 2.2 3.5 5.0
1994 8 12 5.2 5.2 5.2 1 3.5 3.5 3.5
1995 4.2 4.3 4.7 2
2000 25 66 11 9 5.0 5.0 5.0 1 7.3 7.3 7.3
2001 24 66 7.7 7 5.2 5.2 5.2 1 3.6 3.6 3.6
2005 22 67 7.7 6 5 4.4 5.6 6.8 5
2008 10 7 49 7.0 7 4.2 5.2 6.8 3
2009 6.2 6.2 6.2 1
2010 5.2 5.6 6.0 4
2011 4.3 4.4 4.6 2
2013 29 23 65 7.6 7 6.4 6.4 6.4 1 2.3 2.3 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
20 22 62 7.3 9.4 6 27 13 3 4.8 8 3.4 1.2 4.5 18

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1991-08-21
1992-08-13
1992-09-15
1994-08-28
2000-08-14
2001-08-29
2005-08-19
2013-09-04
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 20 8.3 17.5 9.2 12.3 10.4 20 8.7 22 9.1 20 8.6 20.6 8.7 20 8.8
1 20 8.3 17.3 9.2 12.4 10.5 20 8.8 21 9.3 20 8.6 20.5 8.6 20 8.7
2 20 8.3 21 9.3 20 8.6 20.5 8.6 20 8.7
3 20 8.3 16.9 9.0 12.4 10.7 20 8.7 21 9.3 20 8.6 20.5 8.6 20 8.7
4 20 8.3 20 9.1 20 8.8
5 20 8.3 16.9 9.0 12.4 10.8 20 8.7 20 9.0 20 8.5 20.4 8.6 20 8.7
6 20 8.3 20 8.8 20 8.8
7 20 8.3 16.9 8.9 12.3 10.8 20 8.7 20 8.6 20 8.5 20.4 8.6 20 8.8
8 19 8.2 20 8.7 19 8.1 20 8.7
9 19 8.1 16.9 8.9 12.4 10.8 19 8.2 19 8.0 20 8.5 20.1 8.3 19 7.8
10 19 8.0 19 8.1 19 7.9 20 8.5 18.8 7.5 18 7.2
11 19 7.8 16.9 8.9 12.3 10.8 18 7.2 19 7.6 20 8.5 16.0 6.2 18 6.8
12 18 7.4 18 6.1 18 6.2 20 8.5 13.9 5.9 17 5.8
13 18 6.6 14.1 6.4 12.3 10.8 16 4.3 16 5.2 20 8.5 12.3 5.8 15 5.2
14 17 5.4 15 3.7 16 4.6 15 4.3 11.1 5.9 14 4.2
15 16 5.2 12.1 5.3 11.7 9.4 14 3.6 15 4.3 14 4.2 10.6 6.1 13 3.8
16 16 5.0 13 3.3 12 4.0 10.2 6.1
17 16 4.8 13 3.2 12 3.7
18 15 3.9 14 3.8 12 4.0 10.1 6.0
19 15 3.7 12 2.9 10.0 6.0 12 3.5
20 15 3.6 9.6 4.6 7.0 3.3 12 2.9 14 3.3 11 3.6 9.9 6.0
21 15 3.6 12 3.3
22 9.8 5.9
23 15 3.5 9.7 3.7 12 3.3
24 14 2.2 9.7 2.9
25 9.3 4.2 6.5 2.7 12 2.5 13 2.8 10 3.4 12 3.2
26 13 2.8
27 12 2.5
28 10 3.2
29
30 9.2 4.2 6.4 2.5 11 2.8
31
32
33
34
35 9.1 3.7 6.4 1.1 11 2.7

Recent temperature and dissolved oxygen profile plots

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