Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
HIRAM OXFORD 4 1 1.3 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
23 m
(75 ft) 		10 m
(31 ft) 		55 ha
(136 ac) 		5,287,345 m3
(4,287 ac-ft) 		5 km2
(1.8 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
1977 5 5.5 5.5 5.5 1
1986 7.1 7.3 7.7 4
1992 6.5 7.0 7.5 4
2009 6.8 8.1 9.6 9
2010 5 29 6.7 8.2 9.8 8 1.5 1.5 1.5
2011 6.0 7.9 9.1 7
2012 6.0 7.6 9.2 9
2013 7.1 8.0 8.9 6
2014 7.0 7.8 9.4 8
2015 9 10 52 7.2 3 80 7.9 8.5 9.4 9 4.2 4.2 4.2
2016 7.5 8.4 9.7 8
2017 4.9 7.8 9.1 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
9 10 52 7.2 4.3 54 4.9 7.7 9.8 6.6 1.5 2.8 4.2

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2010-08-12
2015-08-19
Depth (m) TEMP DO TEMP DO
0 25.6 7.7 28.3 8.1
1 25.4 7.7 28.2 8.1
2 25.2 7.8 27.3 8.1
3 25.1 7.8 26.2 8.4
4 24.4 8.0 24.8 9.0
5 20.0 12.2 20.1 13.1
6 14.7 11.4 14.6 14.1
7 11.2 9.0 11.2 14.2
8 9.2 7.1 8.5 11.4
9 7.7 5.6 6.8 6.6
10 6.8 4.7 6.0 4.1
11 6.1 4.1 5.3 2.7
12 5.7 4.4 5.1 2.0
13 5.4 3.7 4.8 0.9
14 5.2 2.6 4.7 0.5
15 5.0 0.9 4.6 0.3
16 4.9 0.5
17 4.8 0.4 4.6 0.3
18 4.8 0.4
19 4.8 0.4 4.5 0.2
20 4.8 0.4
21 4.8 0.3 4.5 0.2

Recent temperature and dissolved oxygen profile plots

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