Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
HIRAM OXFORD 4 1 5.71 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
13 m
(44 ft) 		6 m
(19 ft) 		86 ha
(212 ac) 		4,986,919 m3
(4,043 ac-ft) 		14 km2
(5.5 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
1984 3.9 4.4 5.2 6
1985 5.0 21 6 14 3.4 5.2 6.2 7
1986 1.9 3.7 5.0 6
1987 3.7 4.3 5.4 6
1988 2.9 3.8 4.2 6
1989 2.8 3.8 5.2 6
1990 3.7 4.1 5.6 7
1991 3.6 4.3 5.4 7
1992 3.6 4.6 5.7 6
1993 4.0 4.8 5.5 6
1994 4.0 5.0 6.4 6
1995 4.3 5.4 6.2 6
1996 5.0 31 8 8 4.3 4.6 5.7 5 3.6 3.6 3.6
1997 3.9 4.7 5.4 6
1998 3.5 4.3 5.0 8
1999 4.0 5.0 6.1 6
2000 4.7 5.0 5.8 6
2001 4.0 27 6.7 7 7 5.6 6.2 7.7 5 4.5 4.5 4.5
2002 4.2 5.4 6.2 6
2003 5.0 5.5 6.2 6
2004 4.9 5.4 6.6 6
2005 4.6 5.2 6.3 6
2006 29 4.3 28 6.8 7 10 3.8 4.8 5.5 6 4.9 4.9 4.9
2007 4.5 5.3 6.3 5
2008 4.2 4.8 5.6 5
2009 4.4 5.2 6.6 6
2010 4.9 5.6 6.4 2
2011 7 4.5 5.1 5.6 6 8.7 8.7 8.7
2012 4.3 4.9 5.6 6
2013 4.4 5.2 6.4 7
2014 4.6 5.3 6.2 5
2015 15 6.5 31 6.8 6 14 5.0 5.6 6.5 6 5.6 5.6 5.6
2016 4.3 5.5 6.5 7
2017 4.6 5.0 6.2 7

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
22 5 28 6.8 6.8 11 1.9 4.9 7.7 6 3.6 5.5 8.7

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1984-08-30
1985-09-18
1996-08-22
2001-08-30
2006-08-14
2011-08-16
2015-08-19
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 25.1 9.4 19.8 9.2 25.0 8.3 23.6 8.8 22.7 7.6 22.0 7.8 28.2 8.3
1 25.0 8.9 24.5 8.3 23.2 8.7 22.7 7.6 22.1 7.7 27.5 8.3
2 24.9 8.7 18.5 9.2 24.1 8.3 22.9 8.7 22.6 7.5 22.1 7.8 27.1 8.2
3 23.5 8.4 23.3 7.9 22.8 8.6 22.3 7.4 22.1 7.8 25.4 8.4
4 21.9 7.0 18.0 9.1 21.7 6.5 22.2 8.5 20.5 5.3 22.1 7.7 23.6 7.6
5 16.3 2.9 18.0 3.8 20.0 8.3 15.8 2.6 16.5 6.3 19.7 5.3
6 14.6 3.1 17.9 8.6 13.8 3.1 12.6 6.8 13.4 2.7 13.0 4.4 15.1 4.2
7 12.0 3.3 16.5 6.2 11.1 3.4 10.2 5.9 11.8 2.8 10.5 3.9 12.2 4.2
8 10.8 4.1 13.2 2.9 9.0 3.8 8.6 5.5 10.7 2.9 9.0 4.3 10.5 4.1
9 9.2 3.6 11.0 1.6 8.0 3.6 7.2 4.1 9.9 2.2 8.1 3.8 9.2 4.0
10 9.0 3.4 9.5 0.7 7.3 3.2 6.6 3.2 9.4 1.4 8.3 2.2
11 9.0 0.3 7.0 2.5 6.4 1.9 9.1 0.7 8.0 1.1
12 9.0 0.1 8.8 0.6 6.9 1.5 8.8 0.3 7.8 0.2

Recent temperature and dissolved oxygen profile plots

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