Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
HANOVER OXFORD 18 1 1.16 flushes/yr 1084 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
36 m
(118 ft) 		10 m
(32 ft) 		52 ha
(128 ac) 		5,112,279 m3
(4,145 ac-ft) 		9 km2
(3.5 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
1976 6.0 19 7.0 7.8 2.9 4.2 5.7 5 4.3 4.7 5.1
1977 5 5.2 5.6 5.8 2
1978 5.1 5.7 6.4 3
1979 4.9 5.3 6.1 4
1980 5.0 30 14.0 18 2.7 4.5 6.3 6 4.0 4.0 4.0
1982 5.5 6.3 7.1 5
1983 4.5 1.0 5 6.5 6.5 6.5 1 2.5 2.5 2.5
1984 5.0 7.0 9 4.4 5.2 5.8 4 7.9 7.9 7.9
1985 4.9 6.0 6.5 5
1986 4.2 4.9 5.5 7
1987 5.0 25 8.0 70 1.5 4.4 5.9 5 1.2 1.2 1.2
1988 4.1 4.6 5.1 6
1989 3.3 4.0 4.9 6
1990 3.0 3.6 4.3 6
1991 5.5 15 6.7 9.0 3.2 3.6 4.5 5 4.9 4.9 4.9
1992 3.5 4.6 5.2 6
1993 4.2 4.6 4.9 5
1994 4.2 5.0 5.6 4
1995 3.9 4.5 5.4 6
1996 3.9 4.3 5.4 5
1997 2.0 24 6.8 7.0 4.2 4.9 6.2 6 3.6 3.6 3.6
1998 2.4 4.4 5.7 6
1999 3.7 4.8 5.9 6
2000 4.1 4.6 5.0 6
2001 4.9 5.3 6.5 6
2002 6.0 23 5.0 3.2 5.2 6.4 6 2.6 2.6 2.6
2003 4.2 4.8 5.9 6
2004 4.2 5.1 5.8 6
2005 4.2 4.7 5.0 6
2006 4.3 4.8 5.5 6
2007 18 3.5 19 6.8 5 4.6 5.2 5.8 6
2008 3.4 4.6 6.3 6
2009 3.8 4.7 5.6 5
2010 3.9 5.1 5.6 5
2011 3.7 4.9 5.7 6
2012 18 6.0 3.2 3.9 5.2 6
2013 30 4.0 18 6.8 8.0 3.6 4.1 4.9 7 7.0 7.0 7.0
2014 3.8 4.4 5.5 7
2015 4.2 4.9 5.2 4
2016 4.2 5.7 6.8 7
2017 3.5 4.1 4.8 6
2018 19 6.8 22 7.0 7.5 4.8 5.3 5.8 7 6.0 6.0 6.0

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
22 4.8 21 6.5 7.3 5 21 7.8 1.5 4.8 7.1 5.4 1.2 4.4 7.9

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1983-09-01
1984-08-14
1987-09-03
1991-09-09
1997-08-12
2002-08-13
2013-08-22
2018-08-15
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 21.3 8.7 24.9 8.3 17.7 9.8 20.5 9.7 24.0 8.4 25.8 8.2 24.2 8.3 24.8 8.2
1 24.3 8.3 19.9 9.3 23.7 8.4 24.0 8.5 23.2 8.4 24.3 8.2
2 21.0 8.8 24.1 8.3 17.5 9.7 19.5 9.3 23.2 8.4 23.8 8.5 22.1 8.7 24.1 8.2
3 23.5 8.4 19.2 9.3 22.7 8.6 22.5 8.7 20.7 8.8 24.0 8.2
4 20.3 8.9 20.4 9.3 17.5 9.7 19.1 9.2 21.3 9.0 21.3 8.5 14.3 8.7 23.2 8.1
5 19.7 9.1 16.2 10.3 18.0 8.2 17.7 11.0 17.4 8.9 14.0 7.0 19.3 9.5
6 16.8 9.3 11.5 8.7 16.8 9.6 14.9 7.2 12.2 9.6 12.8 8.5 10.4 7.5 13.1 9.8
7 9.0 7.8 11.0 6.9 9.3 8.6 9.9 8.1 8.6 7.5 9.5 9.0
8 8.0 7.5 8.1 7.7 8.8 7.1 9.0 6.5 8.3 8.1 8.8 7.8 7.2 7.6 8.0 8.5
9 7.5 7.6 7.8 6.6 7.9 7.9 8.0 7.4 6.2 7.5 7.0 8.1
10 6.8 6.5 6.8 7.6 6.9 6.6 7.0 6.6 7.5 7.9 7.7 7.5 5.8 7.7 6.6 7.7
11 6.1 7.7 7.1 8.0 7.0 7.5 5.6 7.7 6.0 7.1
12 5.6 6.0 5.8 7.6 6.0 6.2 7.0 7.8 7.0 7.4 5.5 7.4 6.0 7.0
13 5.5 7.5 6.8 7.5 6.9 7.2 5.3 7.4 5.7 6.9
14 5.2 5.5 5.2 7.5 5.7 5.9 6.7 7.3 6.9 7.0 5.1 7.3 5.6 6.8
15 5.1 7.5 5.8 6.0 6.3 7.2 6.8 6.9 4.9 7.3 5.5 6.7
16 5.0 5.2 5.1 7.5 5.5 5.8 6.3 7.2
17 5.1 7.4 6.2 7.2 6.7 6.8 4.8 7.3 5.3 6.4
18 5.0 5.0 5.1 7.2 5.2 5.7 6.2 7.2
19 5.1 7.2 6.2 7.1 6.7 6.8 4.8 7.3 5.3 6.3
20 5.0 4.9 5.0 7.2 5.2 5.6 5.3 5.4 6.1 7.0
21 6.1 6.9 6.5 6.7 4.7 7.2 5.2 6.2
22 5.0 7.2 5.1 5.5 6.1 6.9
23 6.0 6.9 6.5 6.7 4.7 7.0 5.2 6.0
24 5.0 7.2 5.0 5.2 6.0 6.9
25 4.8 4.2 5.2 5.0 6.0 6.8 6.4 6.4 4.7 7.0 5.1 5.6
26 5.0 7.0 5.0 4.9 6.0 6.7 5.1 5.1
27 6.0 6.7 6.4 6.2
28 5.0 7.0 5.0 4.8 6.0 6.7
29 5.0 4.2 6.3 6.0 4.5 5.7
30 5.0 6.8 5.2 4.7 6.3 5.8
31
32
33
34
35 5.0 1.5 5.2 3.6 6.2 5.7

Most recent temperature and dissolved oxygen profile plots

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