Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
FRYEBURG OXFORD 10 1 0.7 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
4 m
(12 ft)
6 m
(19 ft)
743 ha
(1,835 ac)
42,668,123 m3
(34,592 ac-ft)
44 km2
(17 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
1995 15 3.1 3.1 3.1 1 1
1996 8.0 6.5 16 13 2.1 2.6 3.0 6 1 3.8 12.4 21.0
1997 11 14 2.4 2.9 3.6 7 8 2.4 2.7 3.0
1998 7.0 6.5 22 1.8 2.4 3.0 2 1
1999 29 11 2.5 2.5 2.5 1 1 1.6 1.6 1.6
2000 29 7.0 35 6.5 15 2.6 2.9 3.0 2 1 2.6 2.6 2.6
2001 20 6.5 37 6.8 13 2.5 2.8 3.1 5 3 2.6 2.6 2.6
2002 25 7.0 47 6.6 14 2.1 2.7 3.0 7 5 2.3 2.3 2.3
2003 55 9.0 25 6.7 17 2.4 2.9 3.1 5 3.1 3.1 3.1
2004 10 8.0 27 6.8 15 2.3 2.8 3.2 7 2 1.6 1.6 1.6
2005 25 8.0 25 6.6 13 2.0 2.8 3.4 6 1 3.8 3.8 3.8
2006 19 6.5 30 6.6 16 3.0 3.0 3.0 1 1 3.4 3.4 3.4
2007 20 7.0 27 7.0 17 2.8 2.8 2.8 1 1 2.3 2.3 2.3
2008 50 8.0 25 16 2.8 2.8 2.8 1 3.9 3.9 3.9
2009 25 8.0 31 6.4 18 3.2 3.2 3.2 1 3.9 3.9 3.9
2010 28 11.0 26 6.8 18 1.8 2.3 2.8 4 4.4 4.4 4.4
2011 68 4.0 20 6.7 74 0.6 1.3 2.1 2 8.5 8.5 8.5
2012 25 9.0 30 6.8 24 1.4 1.7 2.0 2 7.2 7.2 7.2
2013 30 7.5 26 6.6 13 3.6 3.6 3.6 1 3.2 3.2 3.2
2014 45 5.5 23 6.4 18 8.7 8.7 8.7
2015 42 9.0 33 6.7 12 3.1 3.1 3.1 1 1 2.5 2.5 2.5
2016 20 7.0 31 6.9 16 2.1 2.5 3.0 1 1 4.6 4.6 4.6
2017 55 7.0 29 6.8 11 2.8 2.8 2.8 1 1 2.5 2.5 2.5

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
33 7.5 29 6.6 18 18 14 0.6 2.7 3.6 3 1.6 4.2 21

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2010-08-26
2011-09-13
2012-08-09
2013-08-16
2014-08-19
2015-08-24
2016-08-18
2017-08-24
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 21 8.2 22 6.9 27 7.5 23 8.4 22 8.2 26 8.0 25 7.6 24 8.0
1 20 8.2 20 6.0 27 7.6 22 8.5 21 7.8 26 8.1 24 7.6 24 7.9
2 20 8.2 20 5.8 26 7.0 22 8.4 21 7.7 26 8.1 24 7.4 24 7.8
3 20 4.0 25 5.6 22 8.2 20 7.8 26 8.1 24 7.3

Recent temperature and dissolved oxygen profile plots

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