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Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
WINSLOW KENNEBEC 21 1 2.13 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
8 m
(27 ft) 		4 m
(14 ft) 		202 ha
(499 ac) 		8,927,903 m3
(7,238 ac-ft) 		33 km2
(13 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 (μS/cm), pH: pH (standard units)

TP = Total Phosphorus (μg/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 (μg/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
1970 1.7 2.0 2.3 3
1971 1.0 2.4 3.8 5
1972 15 2.5 3.1 4.0 6
1973 2.6 3.0 3.5 2
1977 12 1.4 2.8 3.3 3
1978 21 26 1.8 2.9 4.0 2 14.3 14.3 14.3
1979 29 75 19 1.8 2.5 2.8 5 13.4 13.4 13.4
1980 2.8 3.2 3.8 3
1981 17 17 1.7 2.6 4.0 7 4.2 8.6 20.2
1982 26 1.9 2.8 3.8 7 4.3 10.8 20.5
1983 2.0 3.0 3.6 5
1984 20 18 14 2.2 3.0 3.5 5 12.4 12.6 12.7
1985 19 68 19 1.8 2.5 3.7 5 5.6 13.0 18.7
1986 23 74 24 33 2.0 2.4 2.9 7 6.0 13.5 21.2
1987 28 84 20 23 2.3 2.4 2.7 5 8.6 11.6 20.5
1988 22 19 2.6 3.2 4.0 6 2.6 6.6 11.1
1989 30 78 16 21 2.5 3.2 4.2 5 3.6 7.5 12.3
1994 24 26 2.3 2.6 2.7 1 13.3 13.3 13.3
1995 3.3 3.7 4.1 3
1996 2.0 3.0 3.6 4
1997 2.5 3.5 4.5 5
1998 28 84 18 31 1.4 3.0 3.9 6 15.0 15.0 15.0
1999 3.1 3.4 4.2 6
2000 26 81 19 15 2.2 2.9 3.7 4 6.6 8.1 9.5
2001 3.0 3.6 4.8 5
2002 30 27 93 9 2.8 3.1 4.0 3 6.8 7.8 8.7
2003 51 24 94 18 3.7 3.8 3.8 2 7.3 7.3 7.3
2004 3.4 3.6 3.8 2
2005 3.4 3.4 3.5 2
2006 3.4 3.4 3.4 1
2007 21 25 76 7.6 13 3.0 4.3 5.2 5
2008 3.6 4.1 5.0 4
2009 3.0 3.6 4.2 5
2010 12 4.3 4.7 5.1 3 5.5 5.5 5.5
2013 38 29 86 7.6 15 86 4.1 4.1 4.1 1 8.1 8.1 8.1
2014 32 29 84 7.8 54 3.9 3.9 3.9 1 8.4 8.4 8.4

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
34 25 81 7.7 18 17 32 21 1 3.2 5.2 4 2.6 10 21

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1989-09-28
1994-08-24
1998-08-26
2000-08-24
2002-08-29
2010-09-02
2013-09-03
2014-08-26
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 16 9.3 18 8.9 24 9.4 23 8.0 23 7.6 25 8.3 24 7.8 25 8.4
1 16 9.3 18 8.8 24 9.4 23 7.9 23 7.6 25 8.2 23 7.8 24 8.6
2 16 9.3 18 9.0 24 9.1 22 7.3 23 7.6 24 8.4 23 7.7 23 8.6
3 16 9.3 17 9.0 23 8.5 22 7.3 23 7.6 23 8.4 23 6.7 23 7.5
4 16 9.3 16 9.0 22 7.0 22 7.2 23 6.4 22 8.0 22 3.5 22 6.8
5 16 9.3 16 9.0 22 3.2 22 7.1 22 4.6 21 5.9 20 0.7 21 4.1
6 16 9.3 15 8.5 20 0.3 22 6.6 21 2.6 21 4.1 18 0.2 20 0.6
7 16 8.8 18 0.2 21 3.2 20 1.9 16 0.2 17 0.4
8 19 0.7 16 0.2 16 0.4

Recent temperature and dissolved oxygen profile plots

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