Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
T17 R04 WELS AROOSTOOK 68 1 10.8 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
6 m
(20 ft) 		3 m
(10 ft) 		391 ha
(966 ac) 		12,505,368 m3
(10,138 ac-ft) 		30 km2
(12 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
1987 23 76 17 3.5 3.5 3.5 1
1989 62 40 12 2.0 3.2 4.7 5 2.6 4.6 6.7
1990 2.7 3.2 4.7 6
1991 2.5 3.0 3.2 7
1992 3.0 3.5 4.0 5
1993 2.8 3.3 3.8 6
1994 2.5 3.3 3.8 6
1995 2.9 3.3 3.7 6
1996 2.9 3.3 4.2 6
1997 3.4 4.3 4.9 6
1998 28 82 13 2.7 4.2 4.9 7 5.7 5.7 5.7
1999 4.1 4.5 5.0 5
2000 4.1 4.8 5.3 6
2001 4.2 4.9 5.6 6
2002 4.7 5.0 5.1 2
2003 28 31 82 11 2.7 2.7 2.7 1 8.0 8.0 8.0

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
28 27 76 20 12 2 3.8 5.6 5.1 2.6 6.1 8

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1989-09-05
1998-08-10
2003-08-23
Depth (m) TEMP DO TEMP DO TEMP DO
0 16 9.8 24 9.1 21 7.7
1 16 9.8 24 9.2 21 7.7
2 16 9.8 24 9.1 21 7.8
3 16 9.7 24 9.1 21 7.8
4 16 9.7 24 8.8 21 7.8
5 16 9.6 21 6.0 21 6.6

Recent temperature and dissolved oxygen profile plots

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