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Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
NOBLEBORO LINCOLN 7 1 1.1 flushes/yr 77 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
19 m
(61 ft) 		5 m
(18 ft) 		583 ha
(1,440 ac) 		31,659,000 m3
(25,666 ac-ft) 		24 km2
(9.4 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 (μS/cm), pH: pH (standard units)

TP = Total Phosphorus (μg/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 (μg/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
1975 4.6 4.6 4.6 2
1976 13.0 32 8.0 8 17 4.9 5.0 5.2 2 1.4 3.4 5.5
1977 4.6 5.5 6.1 5
1978 7 4.5 5.1 5.5 5
1979 5.0 5.9 6.5 3
1980 5.4 5.6 6.0 3
1981 6.5 32 9.0 15 4.5 4.5 4.5 1 4.0 4.0 4.0
1984 15.0 8.0 12 5.0 5.3 5.5 2 3.9 3.9 3.9
1985 3.5 4.6 5.8 4
1986 3.4 5.3 6.0 5
1987 6.0 46 10.0 18 4.0 5.5 6.6 6
1988 6.0 10.0 16 4.3 5.4 6.5 7
1989 3.3 4.8 6.5 6
1990 4.4 5.3 6.5 7
1991 7.0 41 7.0 6.0 4.2 5.7 7.0 5 2.6 2.6 2.6
1992 4.3 5.7 7.7 5
1993 3.5 4.6 6.0 6
1994 3.5 4.0 4.3 6
1995 3.8 4.6 5.5 5
1996 4.4 4.6 4.8 5
1997 3.7 4.2 4.9 5
1998 3.8 4.6 5.5 5
1999 7.0 47 17.0 24 3.4 4.5 5.3 5 4.4 4.4 4.4
2000 4.2 4.5 4.8 5
2001 4.5 4.6 4.9 6
2002 4.4 4.6 4.9 5
2003 4.5 4.6 4.7 5
2004 26 8.0 55 6.9 8.0 18 3.8 4.9 5.4 6 5.3 5.3 5.3
2005 3.4 3.8 4.5 5
2006 3.0 3.8 4.8 6
2007 4.7 4.7 4.7 1
2008 20 5.5 42 6.8 7.5 12 3.9 4.3 5.5 5 4.7 5.0 5.4
2009 3.6 3.7 3.8 3
2010 10.0 27 3.4 4.1 4.7 3 4.3 4.3 4.3
2011 7.0 21 4.0 4.8 5.3 5 4.4 4.4 4.4
2012 7 3.1 3.9 4.6 5
2013 3.0 3.5 3.8 2
2014 3.8 4.4 4.7 5
2015 4.0 5.0 5.8 9
2016 4.5 5.0 5.5 8
2017 20 8.0 57 7.0 12.5 4.2 4.9 5.9 8 3.5 4.4 5.4
2018 3.6 4.6 5.1 8

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 8.2 44 6.9 9.4 7 17 17 3 4.7 7.7 4.9 1.4 4.2 5.5

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2006-08-22
2007-08-21
2008-08-21
2008-09-02
2010-08-24
2011-08-18
2017-08-30
2017-09-15
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 23 7.8 22 8.2 22.8 7.8 22.4 8.6 23 6.7 24 8.1 22 8.2 22 8.6
1 23 7.8 22 8.3 22.6 7.7 22.4 8.6 23 6.6 24 8.1 22 8.2 22 8.7
2 23 7.8 22 8.2 22.4 7.8 22.3 8.6 23 6.5 24 8.2 22 8.1 21 8.5
3 23 7.8 22 8.0 22.2 7.8 22.3 8.5 23 6.5 23 8.0 22 8.1 21 8.4
4 23 7.8 22 7.9 22.0 7.6 22.3 8.5 23 6.6 22 8.0 22 8.1 20 8.2
5 23 7.7 22 7.8 21.9 7.6 22.2 8.5 23 6.6 22 7.3 22 8.1 20 7.8
6 22 5.9 22 7.7 21.7 7.5 22.2 8.4 23 6.6 22 6.9 22 8.1 20 7.7
7 21 5.6 21 6.7 21.3 5.7 21.9 8.0 23 6.8 21 3.7 22 6.5 20 7.4
8 19 2.0 18 2.4 20.1 3.3 21.8 8.0 20 0.5 19 1.2 20 1.9 20 7.2
9 16 1.2 15 2.1 18.3 0.7 20.1 1.5 17 0.2 16 1.3 17 0.6 19 6.9
10 15 1.2 14 2.3 16.0 0.3 17.9 0.0 16 0.2 15 1.0 16 0.6 18 4.0
11 15 1.5 13 2.4 14.0 0.2 14.1 0.0 15 0.2 14 1.0 14 0.5 14 0.2
12 14 1.2 12 2.4 11.9 0.3 12.2 0.0 13 0.2 13 0.9 12 0.5 13 0.1
13 12 1.0 11 2.2 10.2 0.4 10.8 0.0 12 0.2 12 0.7 11 0.5 11 0.1
14 12 0.8 11 2.0 9.5 0.2 9.9 0.0 11 0.2 11 0.2 11 0.5 11 0.1
15 12 0.7 10 1.8 9.1 0.2 9.6 0.0 11 0.2 11 0.0 11 0.5 10 0.1
16 11 0.7 10 1.5 8.8 0.2 9.5 0.0 10 0.0 10 0.1
17 11 0.7 10 1.5 8.6 0.2 9.4 0.0 10 0.0 10 0.5 10 0.1
18 11 0.7 8.5 0.2 10 0.5 10 0.1

Most recent temperature and dissolved oxygen profile plots

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