Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
HIRAM OXFORD 4 1 2.55 flushes/yr 401 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
13 m
(44 ft)
4 m
(14 ft)
34 ha
(84 ac)
1,504,028 m3
(1,219 ac-ft)
3 km2
(1.2 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 8 7.0 13
1988 4.3 5.1 6.0 5
1989 3.4 5.0 5.8 6
1990 10.5 31 6.7 6 5.0 6.3 7.6 5
1991 5.3 6.2 6.8 4
1992 4.6 5.6 6.9 6
1993 5.2 5.9 6.4 4
1995 4.2 5.8 7.1 5
1996 7.0 39 7 22 4.2 5.6 6.6 5 2.8 3.0 3.1
1997 8.0 40 7.0 6 16 5.0 5.9 6.5 7 3.2 3.2 3.2
1998 3.4 4.7 5.9 6
2005 5.0 4.3 5.1 6.6 7
2006 12 6.8 38 7.0 7 7.0 17 4.4 5.4 6.0 7 1.9 1.9 1.9
2007 6.0 5.0 5.9 7.0 7
2008 5.5 5.4 5.9 6.4 7
2009 5.0 4.8 5.7 7.1 7
2010 4.5 4.5 6.0 6.9 9
2011 7 7.4 36 7.2 6.5 4.5 5.5 6.6 7
2012 6.0 4.6 5.3 6.7 7
2013 5.0 4.7 5.6 6.6 8
2014 6.0 4.2 5.2 6.7 7
2015 5.0 4.8 5.7 6.5 7
2016 6 10.0 45 7.1 10 7.0 22 4.8 5.4 6.2 7 2.7 2.7 2.7
2017 5.0 4.3 5.3 6.2 7
2018 7.0 5.3 5.8 6.5 6

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
8.3 8.3 38 7 7.3 5.8 18 3.4 5.6 7.6 6.4 1.9 2.7 3.2

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2016-08-22
2016-09-03
2016-09-06
2017-08-20
2017-09-02
2018-08-10
2018-08-26
2018-09-14
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 25.0 8.0 24.4 8.3 22.9 8.5 24.1 8.2 21.0 8.5 27.5 7.6 24.3 8.0 22.7 8.3
1 25.0 8.0 23.9 8.4 22.9 8.5 24.0 8.2 20.6 8.6 27.5 7.6 24.2 8.0 22.2 8.3
2 24.9 8.0 23.7 8.4 22.9 8.5 23.8 8.2 20.3 8.6 27.5 7.6 24.0 8.0 22.0 8.3
3 24.9 8.0 23.5 8.3 22.9 8.5 23.3 8.1 20.1 8.6 27.4 7.5 24.0 7.9 21.9 8.4
4 24.7 8.0 23.4 8.3 22.9 8.4 21.2 8.5 20.0 8.6 24.2 9.9 23.6 7.8 21.7 8.2
5 22.8 8.1 23.3 8.2 22.9 8.4 16.3 11.8 19.5 9.1 18.7 12.6 20.7 11.4 21.3 7.9
6 18.3 9.2 19.1 9.4 19.4 8.0 12.7 9.4 14.0 9.2 13.7 10.8 15.7 10.2 17.3 8.2
7 14.3 5.8 16.3 7.0 15.7 4.4 10.1 5.3 10.9 2.8 11.1 10.0 11.3 8.0 13.2 4.7
8 12.0 1.6 12.4 1.7 12.9 1.0 8.3 1.4 8.6 0.7 8.7 5.6 9.2 4.2 9.9 0.6
9 10.3 0.5 10.6 0.9 10.7 0.8 7.5 0.5 7.8 0.4 7.4 1.2 7.7 0.8 8.1 0.4
10 8.7 0.4 9.3 0.6 9.2 0.7 6.9 0.4 7.0 0.3 6.8 0.7 6.9 0.6 7.2 0.3
11 7.9 0.2 8.3 0.5 8.7 0.6 6.6 0.3 6.7 0.3 6.4 0.5 6.5 0.4 6.7 0.3
12 7.7 0.2 7.6 0.4 8.0 0.6 6.5 0.3 6.5 0.2 6.2 0.5 6.3 0.4 6.5 0.3
13 7.6 0.2 7.5 0.4 6.4 0.2 6.5 0.2 6.1 0.4 6.2 0.3 6.6 0.2
14 7.6 0.2 7.6 0.3 6.4 0.2 6.6 0.2 6.2 0.4 6.3 0.3 6.6 0.2

Most recent temperature and dissolved oxygen profile plots

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