Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
STONEHAM OXFORD 10 1 1.46 flushes/yr 572 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
10 m
(32 ft)
5 m
(15 ft)
22 ha
(54 ac)
1,016,088 m3
(824 ac-ft)
2 km2
(0.9 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
1997 6.8 6.9 8.0 4.8 5.9 7.5 7 1.8 2.1 2.5
1998 8.4 6.6 9.5 7.8 5.1 6.0 6.7 8 4.0 4.0 4.0
1999 6.3 24 6.6 10.0 4.6 6.0 7.6 9 2.1 2.4 2.7
2000 11.7 5.2 30 6.5 6.6 13.3 4.4 5.6 7.0 6 1.7 2.4 3.0
2001 15.4 8.4 27 6.9 4.8 10 5.5 6.2 7.1 6 1.0 1.6 2.2
2002 13.0 7.7 29 6.8 6.1 16 5.2 6.2 7.4 6 1.3 2.0 3.4
2003 12.7 7.4 22 6.6 5.2 16 5.2 6.2 7.5 6 1.1 2.0 3.2
2004 10.7 8.1 19 6.6 6.0 12 5.6 6.3 7.0 7 1.3 1.8 2.3
2005 11.9 8.2 18 6.7 8.4 11.7 5.2 6.4 7.3 6 1.3 2.1 2.7
2006 10.8 6.8 19 6.7 5.7 11 6.7 7.1 8.0 6 1.2 1.8 2.2
2007 10.6 7.2 18 6.7 5.6 10 6.0 6.8 8.1 7 1.0 1.8 2.5
2008 8.8 8.4 18 6.5 5.3 20 5.9 6.6 7.1 6 1.0 2.2 3.0
2009 12.5 9.1 17 6.6 6.5 9 5.5 6.3 7.2 6 1.5 1.9 2.6
2010 6.0 10.0 18 6.8 5.4 21 5.1 7.0 8.0 8 0.9 2.4 5.0
2011 13.6 9.0 16 6.8 8.5 11 5.4 6.4 7.1 6 1.0 2.2 3.0
2012 13.3 7.3 16 6.7 6.1 12.3 5.5 6.7 7.6 7 1.5 2.8 4.6
2013 12.4 7.5 17 6.7 4.8 12 5.9 6.9 8.2 6 0.5 1.6 2.5
2014 22.5 7.3 19 6.6 5.4 11 6.1 7.0 7.8 5 1.5 2.7 3.4
2015 24.1 8.0 19 6.7 5.5 9 6.0 7.0 7.9 7 1.3 2.6 5.2
2016 19.5 8.3 19 6.8 5.8 15 6.4 7.1 8.2 6 0.9 2.9 5.2
2017 20.6 7.8 18 6.8 5.1 8 5.5 6.5 7.4 7 1.2 2.1 3.5
2018 20.6 7.6 19 6.7 4.9 14 5.6 7.4 8.7 6 1.0 1.5 3.0

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
14 7.8 20 6.7 6.2 13 11 4.4 6.5 8.7 6.5 0.5 2.2 5.2

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2016-08-15
2016-09-01
2017-08-07
2017-08-21
2017-09-05
2018-08-02
2018-08-16
2018-09-06
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 24.7 8.1 23.9 8.3 24.0 8.5 23.6 8.4 19.4 9.0 26.0 8.3 26.1 8.2 25.8 8.2
1 24.7 8.1 23.9 8.3 23.7 8.4 23.3 8.4 19.4 8.9 25.8 8.2 25.9 8.2 25.6 8.3
2 24.7 8.1 23.9 8.2 23.5 8.3 23.1 8.3 19.0 8.9 25.7 8.2 25.8 8.2 25.3 8.3
3 24.7 8.0 23.8 8.2 22.8 8.5 22.5 8.2 18.7 8.9 25.5 7.9 25.5 8.1 25.0 8.2
4 24.6 8.0 23.7 8.1 16.7 10.5 17.6 10.4 18.4 8.8 22.4 11.5 23.8 10.4 24.4 8.1
5 21.0 11.5 23.3 8.3 11.5 9.7 12.3 9.8 13.6 9.8 16.3 11.4 18.3 11.3 21.0 10.4
6 16.9 12.6 17.6 12.7 9.0 7.4 9.7 8.4 10.7 8.5 11.7 9.8 13.8 10.2 15.6 9.3
7 12.9 12.7 13.3 12.3 7.7 5.3 8.1 5.5 8.8 6.4 9.4 7.9 10.6 8.2 11.7 7.0
8 10.7 9.4 11.0 7.5 6.9 3.4 7.0 3.0 7.5 3.1 8.0 6.4 8.4 4.1 9.8 4.2
9 9.2 4.9 9.2 2.4 6.3 0.7 6.6 0.6 6.8 0.5 6.8 1.3 7.4 1.6 8.2 1.1
10 8.6 2.7 8.5 0.5 6.2 0.3 6.3 0.3 6.6 0.4 6.4 0.5 6.7 0.5 7.6 0.4

Most recent temperature and dissolved oxygen profile plots

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