Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
WATERFORD OXFORD 10 1 2.28 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
22 m
(72 ft) 		10 m
(34 ft) 		96 ha
(237 ac) 		9,850,925 m3
(7,986 ac-ft) 		21 km2
(8.2 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
1978 3.0 3.7 5.0 3
1979 5 5.1 5.1 5.1 1
1980 9.0 55 8.0 36 7.5 7.5 7.5 1 2.3 2.3 2.3
1982 5.0 5.0 5.0 1
1984 5.0 6.0 40 4.0 5.3 6.5 6 1.7 1.7 1.7
1985 4.5 4.8 5.5 5
1986 4.5 5.1 5.5 5
1987 6.0 42 8.0 57 4.5 5.5 7.0 3
1988 10.7 14.2 12 3.8 5.1 7.2 6 1.5 1.8 2.2
1989 9.7 3.0 4.7 6.0 5 1.4 5.2 8.3
1990 9.5 6.5 4.0 4.4 5.0 3
1991 7.0 10.8 4.6 5.4 6.8 6 2.9 4.1 7.4
1992 7.0 13.5 4.0 5.2 6.0 5 6.1 6.1 6.1
1993 13.5 6.9 9.6 3.7 5.7 7.0 5 4.4 4.4 4.4
1994 10.0 7.2 10.6 4.3 5.3 6.8 5
1995 9.9 7.0 10.0 11.0 5.1 5.9 6.8 5
1996 10.8 6.8 6.9 4.3 5.7 6.9 6 1.8 1.8 1.8
1997 7.0 7.0 11.5 4.5 5.8 6.9 6 3.2 4.4 6.1
1998 7.3 6.2 6.0 8.7 4.6 5.2 6.4 7 2.5 2.5 2.5
1999 8.8 6.6 9.7 8.8 4.9 5.6 6.5 4 2.9 3.1 3.5
2000 18 6.2 48 6.7 8.4 11.8 4.2 5.5 6.6 6 2.4 4.7 9.8
2001 16 8.9 43 6.9 9.7 11.2 4.6 5.9 7.1 8 1.8 2.8 6.0
2002 17 7.5 44 6.7 8.3 12.8 4.9 6.0 7.1 7 2.4 3.4 6.1
2003 14 7.5 38 6.7 11.7 9.8 5.4 6.1 7.0 6 2.5 3.0 4.8
2004 17 7.0 33 6.6 11.0 12.3 3.9 5.3 6.7 6 2.2 3.3 4.5
2005 23 7.5 31 6.7 8.3 11.8 4.6 5.6 7.2 6 1.8 3.5 8.0
2006 13 7.1 32 6.6 7.5 13.2 4.4 5.7 6.9 5 1.7 2.9 4.0
2007 14 6.8 29 6.7 7.6 12.3 4.5 5.8 7.1 8 2.1 3.9 5.7
2008 13 7.0 28 6.6 10.3 11.6 3.8 5.4 6.9 9 2.5 3.4 6.5
2009 18 8.3 23 6.7 10.9 7.8 3.4 4.6 5.3 8 3.1 4.5 5.1
2010 13 9.8 28 6.8 10.0 9.3 4.8 6.1 7.0 7 1.8 2.8 4.0
2011 15 8.8 23 6.7 10.2 14.8 4.4 5.4 6.1 6 3.6 5.2 7.2
2012 19 7.5 28 6.8 10.9 11.0 3.7 4.8 5.8 7 2.0 3.8 5.2
2013 20 6.8 30 6.6 9.8 11.2 4.0 5.0 5.8 6 2.0 3.9 5.7
2014 32 6.8 32 6.7 8.2 9.5 4.2 5.4 6.6 5 2.0 4.5 5.7
2015 29 8.1 34 6.8 8.6 11.7 4.6 5.6 6.9 5 3.6 6.3 11.0
2016 26 8.3 35 6.9 7.2 9.4 4.6 5.9 7.1 10 1 2.2 2.7 3.3
2017 30 7.6 33 6.7 9.8 10.4 3.7 5.1 7.2 9 1.4 3.7 5.5

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
19 8.2 34 6.7 9.2 5 36 11 3 5.4 7.5 5.6 1.4 3.6 11

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2015-08-27
2015-09-11
2016-08-10
2016-08-25
2016-09-13
2017-08-08
2017-08-30
2017-09-13
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 25.3 8.0 24.5 8.1 24.7 7.9 24.9 8.4 22.3 7.4 23.3 8.2 20.8 8.6 20.4 9.0
1 25.0 8.0 24.5 8.1 24.7 8.0 24.5 8.4 22.3 7.4 23.3 8.2 20.9 8.6 19.9 9.0
2 24.8 8.0 24.5 8.1 24.7 8.0 24.2 8.4 22.3 7.4 23.3 8.2 21.0 8.5 19.5 9.0
3 24.7 8.0 24.5 8.1 24.6 7.9 23.9 8.3 22.3 7.4 23.3 8.1 21.0 8.5 19.2 8.9
4 22.3 9.1 23.1 8.2 24.5 7.9 23.8 8.2 22.3 7.4 18.0 5.0 20.9 8.3 18.7 8.6
5 17.7 12.5 18.9 11.7 20.8 10.4 23.4 8.2 22.3 7.4 12.4 5.6 14.4 4.6 16.9 6.1
6 12.9 8.3 13.0 7.9 14.7 7.2 17.0 9.1 17.3 8.2 10.4 6.0 10.9 4.9 12.6 3.9
7 9.9 8.2 10.4 7.3 11.5 7.3 13.1 5.9 13.0 4.2 9.1 6.3 9.2 5.6 10.4 4.4
8 8.2 8.2 8.4 7.4 9.9 7.5 10.5 6.3 10.7 4.9 8.0 7.0 7.9 6.6 8.8 5.1
9 7.3 8.1 7.4 7.8 8.7 8.2 8.9 6.4 8.6 5.9 7.0 6.9 7.0 7.0 7.2 7.2
10 6.6 8.5 6.6 8.0 7.6 8.3 7.8 6.8 7.3 6.7 6.3 7.5 6.4 7.1 6.2 6.9
11 6.2 8.0 6.1 7.6 6.8 8.3 7.0 7.2 6.7 6.1 5.7 7.6 6.0 7.0 5.7 6.6
12 5.9 8.6 5.8 9.7 6.3 8.3 6.4 7.4 6.2 5.7 5.4 7.6 5.4 6.4 5.4 6.3
13 5.6 9.8 5.7 9.7 5.8 8.3 5.9 8.2 5.9 5.6 5.1 7.3 5.0 6.6 5.2 5.4
14 5.5 9.1 5.5 8.8 5.6 7.3 5.6 7.5 5.6 5.0 4.8 6.5 4.8 6.0 5.0 4.5
15 5.4 7.3 5.4 6.8 5.4 6.5 5.4 6.5 5.4 4.7 4.6 5.7 4.6 5.5 4.8 4.0
16 5.4 5.5 5.3 4.6 5.2 6.5 5.4 4.6 5.2 3.6 4.5 4.7 4.5 3.7 4.6 3.5
17 5.3 3.9 5.3 1.7 5.2 4.7 5.2 4.0 5.1 2.4 4.4 3.0 4.5 2.2 4.6 1.9
18 5.2 1.6 5.2 0.6 5.0 2.8 5.1 2.0 5.1 1.3 4.4 0.8 4.5 0.7 4.6 1.5
19 5.1 0.2 5.1 0.1 5.0 1.5 5.1 0.4 5.1 0.5 4.4 0.4 4.4 0.3 4.5 0.7
20 5.0 0.1 5.1 0.1 4.9 0.6 4.4 0.2
21 5.0 0.1 4.9 0.1

Recent temperature and dissolved oxygen profile plots

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