Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
GARDINER KENNEBEC 12 1 8.99 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
8 m
(26 ft) 		2 m
(7 ft) 		303 ha
(748 ac) 		6,466,980 m3
(5,243 ac-ft) 		6 km2
(2.5 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 23 1.4 3.1 4.4 7 2.5 6.3 17.1
1977 24 22 21 2.8 5.7 8.7
1978 19 21 18 3.0 3.8 4.4 5 1.8 5.1 9.5
1979 24 2.4 3.1 4.5 10 1.3 6.4 13.5
1980 25 22 1.8 3.2 5.6 9 3.5 9.5 20.7
1981 21 2.3 3.2 4.6 7 2.8 7.3 10.0
1982 100 21 3.8 4.3 4.9 7 3.3 4.5 6.9
1983 15 1.8 3.2 4.7 4 2.7 9.9 20.6
1984 58 87 2.3 3.1 4.6 6 14.1 14.1 14.1
1985 66 20 48 3.8 4.7 5.4 5 1.5 5.0 8.4
1986 27 24 2.8 3.8 4.7 6
1987 16 24 1.5 3.2 4.5 7 3.5 7.6 14.0
1988 16 22 35 2.0 3.1 4.2 5
1989 1.9 3.0 3.8 5
1990 18 57 6.9 26 305 1.5 3.0 4.1 6
1991 15 6.9 28 2.3 2.9 3.6 5 3.5 11.1 21.8
1992 16 7.0 1.8 2.9 4.0 5 6.7 16.6 27.5
1993 17 7.0 22 1.9 2.7 3.5 5 7.2 16.4 26.3
1994 14 6.9 19 84 2.5 3.5 5.0 5 3.3 10.8 17.0
1995 14 6.6 24 91 2.0 3.2 4.8 5
1996 24 1.3 2.5 4.0 5 4.9 8.9 16.5
1997 16 6.9 22 1.7 2.6 3.8 5 6.5 12.1 19.3
1998 25 1.6 2.4 3.8 9 4.4 14.6 32.1
1999 16 52 1.5 3.6 5.6 10 3.1 11.6 27.0
2000 16 88 7.0 21 292 1.9 3.6 5.3 6 2.8 8.8 24.6
2001 16 7.0 20 56 1.6 3.2 5.6 6 4.3 12.2 31.2
2002 9 16 102 6.9 13 43 33 2.2 3.6 4.8 6 3.0 8.3 14.5
2003 17 6.9 49 2.3 3.1 4.4 6 1.5 9.5 15.2
2004 15 6.9 23 63 1.6 3.5 4.8 6 1.4 8.4 23.4
2005 14 61 1.3 2.5 4.0 5 2.2 11.2 21.9
2006 18 6.8 47 1.6 2.7 4.3 9 4.0 11.6 20.0
2007 19 7.0 53 2.1 3.5 4.7 8 3.7 9.9 19.0
2008 18 6.8 65 1.7 2.9 4.9 9 4.2 11.3 28.0
2009 19 31 110 69 1.0 2.5 4.8 10 2.9 14.2 37.0
2010 20 29 73 1.6 2.4 4.3 8 6.1 13.5 18.0
2011 18 280 46 1.4 2.9 4.7 9 3.5 12.7 34.0
2012 18 66 1.6 2.7 4.6 7 3.7 14.4 26.0
2013 24 19 90 7.6 20 49 77 1.8 2.9 3.8 8 5.2 11.7 21.0
2014 17 20 36 101 2.0 3.0 4.5 7 7.1 10.6 14.0
2015 10 18 96 7.9 17 120 78 2.1 3.4 4.4 9 3.0 10.3 21.0
2016 19 25 22 59 2.7 3.9 5.9 8 2.7 9.4 23.0
2017 20 21 36 66 2.2 2.9 3.7 7 6.6 14.5 25.0

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
14 17 80 7 25 22 103 53 1 3.1 5.9 6.8 1.3 10 37

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2016-08-09
2016-08-24
2016-09-07
2016-09-21
2017-08-09
2017-08-23
2017-09-08
2017-09-25
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 25 7.8 25 7.4 23 8.0 22 8.7 24 8.4 24 8.4 21 9.3 23 13.5
1 25 7.7 24 7.4 23 8.0 21 8.9 24 8.4 24 8.4 20 9.4 22 14.2
2 24 7.5 24 7.6 23 7.8 21 9.0 24 8.4 23 8.3 20 9.1 21 14.0
3 24 7.5 24 7.3 23 7.8 21 8.8 23 8.2 23 7.9 20 8.9 20 13.2
4 24 7.5 24 7.2 23 7.7 21 8.6 23 7.0 22 6.3 20 8.7 20 12.6
5 24 6.2 24 7.1 23 7.6 21 8.0 22 2.0 22 3.2 19 8.5 20 11.8
6 21 0.4 22 0.6 22 4.2 21 7.6 19 0.2 20 0.2 19 5.0 20 8.2
7 16 0.4 17 0.4 19 0.4 19 1.6 15 0.2 16 0.1 18 0.2 18 0.6
8 13 0.4 14 0.4 14 0.4 15 0.6 12 0.2 12 0.1 13 0.1 13 0.2
9 12 0.4 12 0.4 12 0.4 13 0.5 11 0.2 11 0.1

Recent temperature and dissolved oxygen profile plots

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