Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
NOBLEBORO LINCOLN 13 1 3.1 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
7 m
(23 ft) 		4 m
(14 ft) 		98 ha
(242 ac) 		4,273,973 m3
(3,465 ac-ft) 		20 km2
(7.8 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
1976 2.4 2.8 3.0 2
1977 7.0 59 15 18 2.8 3.2 3.7 2 6.2 6.2 6.2
1981 11.0 39 17 3.3 3.3 3.3 1 6.4 6.4 6.4
1988 2.6 3.1 3.7 5
1989 1.8 2.1 2.3 7
1990 12.5 49 6.9 17 1.8 2.5 3.7 8 8.0 8.0 8.0
1991 2.0 2.8 3.5 6
1992 1.8 2.9 3.5 7
1993 1.2 2.2 3.3 6
1994 3.0 29 0.3 1.7 3.0 5 17.9 17.9 17.9
1995 0.6 1.7 3.5 6
1996 1.6 2.5 3.8 6
1997 2.0 2.8 3.4 5
1998 7.0 51 22 30 2.0 2.5 3.2 7 1 14.0 14.0 14.0
1999 2.2 2.6 3.5 5 1
2000 9.0 64 20 23 2.4 2.8 3.0 4 5.0 6.8 7.7
2001 34 7.1 59 7.0 18 23 2.4 2.9 3.5 4 6.8 9.3 11.2
2002 32 11.3 68 19 108 2.8 3.2 3.6 5 6.1 7.9 11.0
2003 46 12.0 63 10 11 3.0 3.2 3.4 4 17.0 17.0 17.0
2004 66 6.6 18 17 2.4 3.0 3.9 11 6.2 8.1 12.5
2005 62 8.8 53 7.2 17 37 1.1 2.2 3.0 5 32.0 32.0 32.0
2006 73 9.4 51 7.0 20 22 2.0 2.5 3.2 6 18.0 18.0 18.0
2007 1.9 2.8 3.6 6
2008 49 8.0 51 6.8 17 32 2.4 3.0 3.5 8 12.0 12.0 12.0
2009 1.9 2.6 3.3 7
2010 18 23 2.2 3.0 3.4 6 8.2 8.2 8.2
2011 2.4 2.8 3.3 5
2012 53 8.9 53 7.0 14 25 2.4 2.7 3.1 6 6.7 6.7 6.7
2013 2.5 2.7 2.9 6
2014 71 9.0 51 6.9 25 2.0 2.3 3.4 5 16.0 16.0 16.0
2015 2.6 3.1 3.4 6
2016 2.1 3.0 3.4 7
2017 1.8 2.1 3.0 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
54 8.9 55 6.9 19 15 32 17 0.3 2.7 3.9 5.6 5 12 32

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2006-08-22
2007-08-30
2008-08-21
2010-08-09
2012-09-04
2014-08-27
2015-08-15
2017-09-13
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 24 8.0 24 8.5 23 7.6 27 7.6 22 7.1 24 8.4 26 7.8 21 8.2
1 24 8.0 24 8.4 22 7.6 24 7.8 22 7.1 24 8.3 24 8.1 20 8.2
2 23 7.7 24 8.1 22 7.4 24 7.6 22 7.0 23 7.7 24 7.9 20 8.0
3 22 6.1 22 6.5 22 7.4 24 7.3 22 6.8 21 4.4 22 5.4 20 7.1
4 21 2.4 21 4.7 20 3.5 22 2.1 21 3.2 20 0.6 21 2.7 20 6.6
5 18 1.1 19 1.7 19 0.4 18 0.3 18 0.0 17 0.6 20 0.1 19 4.2
6 15 1.0 17 1.2 18 0.3 16 0.2 15 0.0 16 0.5 16 0.0 18 0.2
7 14 0.8

Recent temperature and dissolved oxygen profile plots

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