Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
WESTON AROOSTOOK 45 1 0.58 flushes/yr 434 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
39 m
(128 ft) 		10 m
(31 ft) 		6,500 ha
(16,062 ac) 		616,000,000 m3
(499,399 ac-ft) 		355 km2
(137 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 2018 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
1991 6.5 7.2 7.5 3
1992 6.5 7.6 9.0 4
1993 6.0 7.2 8.0 5
1994 5.0 6.2 7.5 6
1995 6.0 7.5 9.0 5
1996 6.0 7.1 9.0 6
1997 4.9 6.8 8.6 6
1998 5.3 7.3 9.2 8
1999 8.0 8.4 9.2 5
2000 7.3 8.0 8.9 4
2001 6.8 8.2 9.7 5
2002 7.6 8.6 9.3 3
2005 11 36 7.2 5 7 7.5 9.3 10.4 3 1.4 1.4 1.6
2006 8.1 8.5 8.9 3
2007 8.0 8.3 8.5 4
2008 7.5 8.6 10.2 3
2009 6.0 6.7 7.3 2 2
2010 7.4 7.7 8.0 2

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
11 36 7.2 5 7 4.9 7.7 10 4.3 1.4 1.4 1.6

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2005-08-28
Depth (m) TEMP DO
0 22 8.1
1 22 8.1
2 22 8.1
3 22 8.1
4 22 8.1
5 21 8.1
6 21 8.1
7 21 7.8
8 20 7.7
9 18 6.2
10 16 6.1
11 14 6.2
12 14 6.0
13 14 6.0
14 13 5.8
15 13 5.8
16 12 5.4
17 12 5.0
18 12 4.8

Most recent temperature and dissolved oxygen profile plots

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