Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
WATERFORD OXFORD 10 1 0.67 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
13 m
(42 ft)
8 m
(25 ft)
180 ha
(445 ac)
13,569,955 m3
(11,001 ac-ft)
15 km2
(5.7 mi2)

Secchi Disk Transparency Graphs

Graph Legend: Secchi symbols = average Secchi Disk Transparency Values; tick marks = maximum and minimum values for each year.

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 11.0 4.4 4.4 4.4 1 6.5 6.5 6.5
1978 8 40.0 3.0 3.9 4.5 4
1979 4.5 5.6 6.5 4
1980 8.0 50 11.0 29 3.0 4.8 6.5 5 3.4 3.4 3.4
1981 3.5 4.8 5.5 5 2.5 4.0 8.6
1982 8.0 45 8.0 16 3.0 4.5 5.5 5 2.5 4.3 5.3
1983 3.5 4.4 5.5 5
1984 3.0 4.2 5.5 5
1985 35 4.0 16 3.8 5.4 6.5 5
1986 4.0 5.4 7.5 4
1987 3.8 4.6 5.8 4
1988 10.2 18.0 20 3.6 4.7 6.2 4 1.9 2.6 3.4
1989 13.0 11.0 3.5 4.6 5.7 5 2.5 3.8 6.1
1990 9.0 6.5 9.7 3.3 4.7 6.1 5
1991 8.0 6.8 12.7 13 9.3 3.8 5.1 6.5 7 3.6 4.6 6.2
1992 11.8 4.0 5.1 6.3 7 4.8 4.8 4.8
1993 9.5 6.8 9.7 4.0 5.7 7.3 7 2.7 3.0 3.3
1994 15.0 9.8 4.9 5.9 6.8 6
1995 9.8 7.0 8.7 16 14.8 5.4 6.5 7.6 5
1996 8.0 6.8 9.8 3.5 5.3 7.1 5 4.4 4.4 4.4
1997 7.0 6.7 11.9 4.6 5.6 6.7 10 3.3 4.1 5.2
1998 7.4 6.3 12.5 11.4 3.9 5.5 6.7 6 2.5 8.6 18.0
1999 6.7 40 6.7 7.5 10 9.0 4.8 6.5 7.6 10 1.6 2.9 4.7
2000 16.9 6.4 48 6.7 9.4 15.7 3.6 5.3 6.2 9 3.4 4.4 9.2
2001 14.6 8.2 46 6.9 7.3 10 14.7 4.7 6.6 7.8 11 1.5 2.6 4.2
2002 15.1 8.4 48 6.8 8.1 20 16.1 4.9 6.0 7.7 10 1.9 3.7 5.9
2003 9.9 8.2 41 6.6 7.3 17 9.8 5.9 6.7 7.9 7 1.7 3.9 7.2
2004 18.9 8.4 35 6.7 7.0 10 16.6 3.9 5.6 6.6 7 2.0 3.6 7.6
2005 19.3 7.5 33 6.6 7.3 12.3 4.4 5.9 6.9 11 1.8 4.2 9.0
2006 15.2 7.3 36 6.7 8.9 9 13.7 5.2 6.2 6.9 6 2.0 3.5 4.9
2007 14.2 7.1 31 6.8 7.0 12 5.1 6.4 7.3 5 1.9 3.9 8.0
2008 12.3 7.4 30 6.7 7.7 10.7 5.4 6.1 7.0 5 2.5 3.4 4.8
2009 20.9 8.4 28 6.7 9.2 12.3 4.7 5.6 7.0 9 2.6 4.7 9.2
2010 12.7 9.5 28 6.8 8.0 13.3 5.2 5.9 6.6 6 2.4 3.9 7.2
2011 15.6 9.0 28 6.7 7.8 18.3 4.8 6.0 6.4 7 3.8 4.5 6.6
2012 17.2 7.2 31 6.8 8.2 15.8 4.5 5.6 6.3 9 2.2 3.8 7.7
2013 16.0 7.9 33 6.7 8.6 14.7 4.1 5.6 6.6 7 2.1 3.2 6.1
2014 29.3 7.3 36 6.7 6.2 13.7 5.1 6.2 7.1 6 2.3 4.1 10.0
2015 26.8 8.6 38 6.8 5.9 15.0 5.5 6.5 7.5 6 1.7 2.9 4.4
2016 26.4 8.2 38 6.8 7.7 18.0 5.0 6.2 7.1 7 1 0.9 2.1 3.0
2017 25.1 8.2 39 6.8 6.8 11.3 4.9 6.0 6.7 6 2.3 4.2 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
18 8.1 37 6.7 9 8 15 14 3 5.5 7.9 6.3 0.9 4 18

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2015-08-27
2015-09-11
2016-08-03
2016-08-19
2016-09-13
2017-08-08
2017-08-25
2017-09-13
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 25.3 8.1 24.2 8.1 25.1 7.3 24 8.3 23 7.3 23.1 8.5 23.7 8.4 20.8 9.0
1 25.3 8.1 24.3 8.1 25.1 7.3 24 8.3 22 7.3 23.2 8.4 23.6 8.4 20.1 9.0
2 25.3 8.1 24.3 8.0 25.1 7.3 24 8.3 22 7.4 23.3 8.4 23.6 8.4 19.8 9.0
3 25.2 8.1 24.3 8.0 25.0 7.2 24 8.3 22 7.4 23.3 8.4 23.6 8.4 19.6 9.0
4 24.7 8.1 24.3 8.1 25.0 7.3 24 8.3 22 7.4 23.3 8.4 23.6 8.6 19.4 8.9
5 19.9 11.0 24.3 8.1 20.9 9.0 24 8.2 22 7.4 18.5 8.8 19.2 8.3 19.0 8.5
6 14.3 8.1 15.2 7.3 15.8 5.6 18 7.8 20 6.6 13.8 5.5 13.9 3.8 16.4 4.0
7 11.4 5.0 12.2 4.4 13.1 3.4 15 2.9 16 0.3 11.3 4.8 11.8 2.9 12.7 1.6
8 9.9 3.3 10.5 2.6 12.1 2.0 13 1.5 13 0.1 10.4 3.5 10.5 2.7 11.0 1.2
9 9.2 1.6 9.5 0.5 11.2 0.7 12 0.5 12 0.1 9.7 3.0 9.9 1.1 10.2 0.3
10 8.5 0.1 8.9 0.1 10.4 0.2 11 0.3 11 0.1 9.2 1.1 9.2 0.4 9.4 0.3
11 8.3 0.1 8.5 0.1 10.0 0.1 10 0.3 10 0.1 8.8 0.5 8.9 0.3 9.1 0.2
12 8.0 0.1 9.8 0.1 8.7 0.3 9.0 0.2
13 9.9 0.1

Recent temperature and dissolved oxygen profile plots

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