Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
ALEXANDER WASHINGTON 36 1 1.37 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
12 m
(40 ft) 		3 m
(11 ft) 		1,022 ha
(2,524 ac) 		34,614,595 m3
(28,062 ac-ft) 		68 km2
(26 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
1977 7 3.5 4.3 5.0 7
1978 4.0 4.7 5.5 5
1979 13.0 28 7 3.5 4.5 5.5 5 2.7 2.7 2.7
1980 6.0 28 9 4.0 4.5 5.0 6 2.1 3.1 3.5
1981 4.0 4.6 5.5 6
1982 9.0 31 6 3.0 4.2 4.8 6 2.9 3.0 3.0
1983 3.5 4.3 5.0 7
1984 4.0 4.7 5.0 6
1985 9.0 44 8 15 4.5 5.2 6.0 6
1986 4.0 4.6 5.5 5
1987 4.0 5.0 6.5 5
1988 3.0 3.7 4.5 6
1989 2.5 3.9 5.5 7
1990 3.0 4.1 5.5 8
1991 11.0 37 7.0 7 3.5 4.6 6.0 8 2.8 2.8 2.8
1992 3.5 4.8 6.0 6
1993 3.0 5.0 7.5 7
1994 4.5 5.3 7.0 6
1995 4.1 5.2 5.9 6
1996 3.4 4.4 5.0 6
1997 11.0 30 6.9 8 11 3.4 5.0 6.8 8 5.7 5.7 5.7
1998 4.7 5.4 6.6 7
1999 3.2 4.9 6.4 6
2000 4.0 5.0 6.0 7
2001 4.0 5.0 6.0 6
2002 3.5 5.2 6.3 6
2003 22 10.8 37 8 13 4.4 4.9 5.3 9 2.3 2.3 2.3
2004 4.3 5.0 5.7 5
2005 3.7 4.5 5.2 8
2006 6 3.1 4.5 6.1 7
2007 20 7.7 32 7.1 9 3.8 4.8 5.6 6
2008 4.4 4.7 5.1 6
2009 3.7 4.2 4.4 6
2010 4.2 4.8 5.4 6
2011 4.1 4.4 4.8 5
2012 3.4 4.1 4.5 6
2013 40 8.6 32 7.0 8 14 4.3 4.3 4.3 1 3.4 3.4 3.4
2014 3.7 4.5 5.1 7

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
27 9.6 33 7 7.7 6 13 2.5 4.7 7.5 6.2 2.1 3.3 5.7

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1982-09-08
1985-08-22
1991-09-05
1996-08-26
1997-08-11
2003-08-20
2007-08-20
2013-08-19
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 18 9.0 22 8.3 20 9.0 22 7.6 24 8.5 25 8.1 21 8.5 22 8.1
1 18 9.0 22 8.2 20 8.8 24 8.5 24 8.1 21 8.4 22 8.1
2 18 9.0 22 8.2 20 8.7 22 7.5 24 8.5 24 8.1 21 8.4 22 8.1
3 18 9.0 22 8.2 20 8.7 20 7.5 23 7.9 24 8.0 21 8.5 22 8.0
4 18 8.9 22 8.1 19 8.6 20 7.4 22 7.7 24 7.5 21 8.4 22 8.1
5 18 8.9 22 7.9 19 8.3 20 7.5 22 7.5 23 7.0 20 8.4 22 8.1
6 18 8.9 22 7.8 19 8.2 20 7.2 22 6.6 23 6.4 20 8.5 21 7.0
7 18 8.9 22 7.7 19 8.2 20 6.6 22 6.1 22 5.0 20 8.5 21 6.7
8 18 8.9 22 6.8 19 8.1 20 6.5 22 5.7 20 3.0 20 8.3 21 6.8
9 17 8.8 21 3.6 19 8.1 20 4.5 17 1.0 20 8.1 20 6.2
10 17 8.5 16 0.5 19 7.9 16 1.6 14 0.7 20 8.2 17 1.6
11 16 0.3 19 7.8 12 1.0 12 0.3 13 0.2 14 0.8
12 14 0.3 18 5.3 11 0.7 11 0.2 12 0.1 11 0.2
13 14 0.3 14 0.4 11 0.2 10 0.1
14 10 0.1

Recent temperature and dissolved oxygen profile plots

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