Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
LIBERTY WALDO 13 1 0.32 flushes/yr 509 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
20 m
(65 ft) 		6 m
(21 ft) 		427 ha
(1,055 ac) 		27,726,512 m3
(22,478 ac-ft) 		8 km2
(3.2 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
1976 7.0 25 4.0 7.2 7.5 8.2 8.7 4 2.5 2.5 2.5
1977 4 6.2 8.8 11.3 5
1978 6.4 8.3 9.7 6
1979 6.4 8.5 10.4 5
1980 7.0 40 6.0 33 4.1 7.7 10.1 6 1 1.6 1.6 1.6
1981 6.4 8.0 9.8 5
1982 6.0 7.6 9.1 5
1983 9.0 5.0 11 5.8 7.9 10.8 7 1.3 1.3 1.3
1984 5.3 8.3 9.8 6
1985 6.7 8.6 11.0 6
1986 6.0 25 5.0 18 6.4 8.4 11.0 5
1987 6.1 8.0 9.8 7
1988 6.4 8.2 10.7 6
1989 5.5 7.9 8.8 6
1990 6.4 6.2 8.1 11.3 5
1991 6.5 7.3 8.9 10.1 4
1992 6.6 6 6.7 8.4 9.3 5
1993 7.1 7.3 8.6 10.4 6
1994 7.0 9.2 11.1 6
1995 8.0 9.4 11.2 5
1996 7.0 7.8 10.1 5
1997 6.5 37 7.0 4.0 8 7.6 9.3 11.3 7 1.9 1.9 1.9
1998 7.0 8.6 10.3 4
1999 7.1 8.9 9.8 6
2000 7.5 8.5 10.1 4
2001 5.2 7.0 5.5 10 9.3 9.7 11.0 2 1.1 1.5 1.9
2002 7.9 8.8 10.5 3
2003 8.9 9.6 10.6 2
2009 5.0 7.6 8.4 9.0 3 1.4 1.4 1.4
2016 1 8.0 44 7.2 4.0 19 6.9 9.4 10.0 4 1.8 1.8 1.8
2017 6.6 8.6 9.8 4
2018 8.5 9.3 10.7 5

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
1 7 34 6.7 4.8 14 7.2 4.1 8.6 11 5 1.1 1.7 2.5

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2001-08-11
2001-08-23
2002-08-27
2003-08-16
2003-08-30
2009-08-17
2009-09-06
2016-08-30
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 25.0 8.2 24.4 8.2 22.5 8.2 24 8.1 23 8.4 25.1 8.0 21.4 8.7 23.6 8.7
1 25.0 8.1 23.9 8.4 22.0 8.4 24 8.2 23 8.5 24.9 8.1 21.4 8.7 23.5 8.7
2 25.0 8.1 23.7 8.4 22.0 8.4 24 8.2 23 8.5 24.8 8.1 21.4 8.7 23.4 8.7
3 25.0 8.1 23.7 8.4 22.0 8.4 24 8.2 22 8.5 24.3 8.2 21.4 8.7 23.1 8.7
4 25.0 8.1 23.6 8.4 22.0 8.4 24 8.2 22 8.5 23.8 8.4 21.3 8.7 23.1 8.7
5 25.0 8.1 23.5 8.5 21.8 8.5 24 8.2 22 8.5 23.6 8.5 21.3 8.7 23.0 8.6
6 24.5 8.2 23.4 8.5 21.8 8.5 23 8.3 22 8.6 23.3 8.5 21.3 8.7 23.0 8.6
7 24.2 8.2 23.3 8.4 21.8 8.5 23 8.4 22 8.6 21.6 9.0 21.3 8.7 23.0 8.6
8 21.2 9.8 22.7 8.7 21.8 8.4 21 9.0 22 8.8 19.5 9.0 21.1 8.7 23.0 8.6
9 17.8 10.6 19.1 11.6 20.2 8.4 18 10.4 18 9.9 17.6 7.5 19.6 7.6 22.8 8.6
10 16.0 11.6 16.2 12.6 19.2 9.2 16 10.7 16 10.5 16.7 6.2 17.6 5.6 18.0 9.6
11 14.5 10.7 14.5 10.6 16.0 8.6 15 10.2 15 10.0 15.7 4.7 16.3 3.5 15.9 6.8
12 12.8 9.4 13.0 8.8 15.5 7.8 14 9.6 14 9.5 14.5 3.8 15.3 2.3 14.5 6.2
13 11.0 10.8 11.2 7.4 14.0 7.2 12 9.6 13 9.4 13.4 4.0 13.1 2.6 12.8 5.6
14 10.0 10.0 9.5 8.7 13.6 6.5 11 8.8 11 8.6 11.2 4.8 11.6 2.9 11.5 5.4
15 8.5 9.2 8.4 8.4 12.0 6.0 10 8.4 10 8.8 9.6 5.0 10.3 4.1 10.2 4.7
16 7.5 6.6 7.6 6.2 11.8 4.8 9 5.8 9 5.2 8.8 5.0 9.1 3.1 9.3 1.6
17 7.0 3.2 7.2 4.5 11.2 3.5 8 4.6 8 4.4 8.3 4.4 8.1 2.1 8.5 0.2
18 6.8 0.5 6.8 0.6 10.5 1.0 8 2.4 8 2.0 7.8 3.0 7.7 0.1 8.2 0.1
19 6.5 0.2 9.8 0.2 8 0.6 8 0.4 7.4 0.7 7.4 0.1

Most recent temperature and dissolved oxygen profile plots

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