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
2002 16 6.9 20 14 3.7 3.9 4.2 4 5 2.9 5.6 8.4
2006 17 6.8 22 21 1.6 2.5 3.3 6 4 3.6 7.0 17.0
2007 18 7.0 17 18 2.7 3.5 3.8 8 9 2.4 5.0 9.7
2008 16 6.6 23 22 2.1 3.1 3.9 8 1 3.5 6.2 9.4
2009 18 24 22 2.1 3.1 4.0 7 2 3.6 7.3 13.0
2010 2.7 3.4 3.9 8 6
2011 2.7 3.6 4.0 7 9
2012 15 22 21 1.4 3.3 3.8 7 6 7.2 7.2 7.2
2013 18 28 2.7 3.2 3.9 7 1 5.4 7.8 11.0
2014 15 23 2.0 3.1 3.9 8 1 6.0 8.2 14.0
2015 16 18 3.2 3.7 4.0 7 6 3.3 5.7 11.0
2016 18 18 2.5 3.5 3.8 8 9 2.9 3.6 6.3
2017 20 21 2.8 3.6 4.0 7 3 3.3 6.6 16.0

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
17 6.8 22 21 21 17 1.4 3.4 4.2 7.1 2.4 6.4 17

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2015-09-18
2016-08-09
2016-08-24
2016-09-07
2016-09-21
2017-08-09
2017-08-23
2017-09-08
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 24 8.5 25 7.5 25 8.2 23 8.4 22 8.9 24 7.4 25 8.5 21 9.5
1 23 8.6 25 7.4 24 8.2 23 8.4 22 8.9 24 7.4 24 8.5 20 9.4
2 23 8.4 25 7.4 24 8.1 23 8.4 21 8.9 24 7.3 24 8.4 20 9.4
3 22 7.9 24 7.2 24 7.3 23 8.0 21 8.9 24 7.3 24 8.0 20 9.3
4 22 7.3 24 7.1 24 7.5 22 7.7 21 8.9 23 7.3 23 0.8 20 4.0

Recent temperature and dissolved oxygen profile plots

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