Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
NEW GLOUCESTER CUMBERLAND 5 1 0.88 flushes/yr 299 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
21 m
(68 ft) 		8 m
(28 ft) 		134 ha
(331 ac) 		11,271,150 m3
(9,138 ac-ft) 		14 km2
(5.3 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
1975 7 6.5 6.5 6.5 1 3.6 3.6 3.6
1981 6.7 6.8 7.0 1
1982 11.0 51 5.0 9 5.3 6.0 6.7 1 3.1 3.1 3.1
1983 7.0 7.0 7.0 1
1986 6.3 6.3 6.3 1
1987 12.0 48 5.0 12 4.0 6.0 7.5 4
1988 5.4 6.2 6.7 5
1989 4.1 5.5 6.5 6
1990 7.1 6.6 4.1 7.2 9.2 5
1991 10.0 6.7 7.2 17 4.9 6.5 8.1 5
1992 12.6 6.3 6.8 16 4.8 6.6 7.9 5
1993 10.5 7.0 6.0 12 5.0 6.7 8.8 5 4.0 4.0 4.0
1994 10.0 7.0 5.8 15 5.1 7.6 8.7 4
1995 9.0 6.0 11 5.8 7.1 8.4 4
1996 9.6 7.4 8.2 12 5.5 6.7 8.2 5
1997 9.1 7.1 6.6 14 5.5 6.7 8.1 5 3.2 5.0 6.4
1998 9.9 52 7.1 8.0 8 5.1 5.9 6.6 5 1 1.6 4.3 5.8
1999 11.4 53 7.0 5.8 9 7.0 7.6 8.2 5 1.6 2.7 4.4
2000 11.0 7.0 8.2 15 6.1 6.7 7.4 5 1.6 3.8 5.0
2001 9.9 57 6.9 7.0 15 5.0 6.3 7.6 5 2.3 3.1 4.5
2002 10.0 7.0 7.4 15 5.6 6.8 7.7 5 2.0 2.9 3.9
2003 11.3 68 7.0 6.8 8 4.6 5.9 8.1 5 2.0 3.8 6.1
2004 13.0 13.1 64 7.0 6.0 10 5.7 6.8 7.6 4 2.7 3.2 4.1
2005 10.8 59 6.8 7.0 12 4.9 6.9 8.2 5 2.9 4.2 5.6
2006 9.7 7.0 4.8 6.2 7.2 8 3.8 4.7 5.5
2007 10.0 8.0 4.7 6.5 7.5 8 2.5 4.4 5.6
2008 10.0 7.0 6.3 6.1 6.8 7.5 4 3.1 5.4 6.9
2009 10.7 6.8 4.8 5.8 7.0 9 4.1 5.6 8.0
2010 10.7 5.0 5.7 7.0 8.7 5 3.8 4.5 5.0
2011 11.0 5.7 10 5.4 6.7 7.6 7 2.7 3.9 5.9
2012 15.7 11.0 7.3 7.0 4.9 5.8 6.4 6 3.5 4.3 5.2
2013 11.3 12.0 7.5 6.3 4.8 6.6 7.6 6 3.0 3.8 4.3
2014 13.0 11.7 7.0 7.3 5.9 7.2 8.3 5 2.2 2.8 3.4
2015 9.2 12.3 7.1 7.0 6.4 7.1 8.2 4 2.2 3.7 5.0
2016 7.0 12.0 6.8 5.0 6.2 7.5 8.4 6 1.6 2.0 2.5
2017 12.0 11.7 7.0 5.7 6.7 7.0 7.3 3 2.8 3.1 3.8
2018 9.0 12.3 7.1 4.0 6.6 7.7 8.3 5 2.0 2.0 2.0

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
11 11 56 6.9 6.5 7 12 4 6.7 9.2 4.7 1.6 3.8 8

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2015-08-25
2015-09-15
2016-08-24
2016-09-14
2017-08-22
2017-09-12
2018-08-21
2018-09-14
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 25.2 8.3 22.8 8.6 24.6 8.2 22.9 8.1 24.3 8.6 20.1 9.2 24.9 8.0 22.4 8.9
1 25.2 8.3 22.8 8.6 24.5 8.2 22.9 8.1 23.8 8.6 19.7 9.2 24.9 8.0 22.4 8.9
2 25.2 8.3 22.8 8.6 24.4 8.2 22.8 8.1 23.7 8.6 19.6 9.2 24.9 8.0 22.3 8.9
3 25.1 8.3 22.7 8.6 24.3 8.2 22.7 8.1 23.2 8.6 19.6 9.2 24.8 8.0 22.1 8.9
4 24.8 8.3 22.7 8.6 24.2 8.1 22.7 8.1 23.0 8.6 19.5 9.2 24.8 8.0 22.0 8.9
5 22.8 9.7 22.7 8.5 24.1 8.1 22.7 8.1 21.7 9.3 19.5 9.2 24.4 8.2 21.9 8.8
6 18.4 13.4 19.2 12.8 21.8 10.5 22.6 8.2 16.7 13.2 19.4 9.2 17.5 13.9 20.8 10.0
7 12.5 14.5 14.2 13.0 15.6 12.6 18.6 10.9 11.5 9.5 13.9 12.2 12.4 14.7 14.6 14.6
8 10.3 13.9 10.8 12.3 12.2 10.7 14.1 12.3 9.3 6.3 10.3 6.7 9.3 11.0 10.4 14.5
9 8.3 9.6 9.3 9.1 10.2 5.5 10.9 4.6 8.4 4.7 8.7 3.5 7.5 5.3 8.5 5.6
10 7.9 7.7 8.4 6.3 9.5 3.7 9.8 1.9 7.9 4.0 8.3 3.0 7.2 4.3 7.6 3.5
11 7.6 6.2 7.8 4.6 9.0 2.6 9.2 0.9 7.7 3.7 7.9 2.4 6.9 3.9 7.1 2.3
12 7.5 5.5 7.6 3.9 8.8 2.0 8.9 0.9 7.5 3.5 7.7 2.0 6.7 3.5 7.0 2.3
13 7.3 5.2 7.5 4.0 8.7 1.7 8.7 0.5 7.5 3.1 7.6 1.8 6.6 2.8 6.8 1.7
14 7.2 3.9 7.4 3.1 8.5 1.3 8.5 0.0 7.4 2.3 7.5 1.3 6.6 2.6 6.7 0.1
15 7.1 2.8 7.3 1.7 8.4 0.6 8.3 0.0 7.3 1.7 7.3 0.4 6.4 1.4 6.5 0.1
16 8.2 0.1 8.2 0.0 7.2 1.3 7.2 0.1 6.3 0.2 6.3 0.0
17 6.8 0.1 7.0 0.1 8.0 0.1 8.1 0.0 7.1 0.5 7.2 0.1 6.2 0.1 6.3 0.0
18 7.9 0.0 7.9 0.0 7.0 0.1 7.1 0.0 6.1 0.1
19 6.9 0.0
20 7.9 0.0

Most recent temperature and dissolved oxygen profile plots

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