Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
BAR HARBOR HANCOCK 16 1 1.15 flushes/yr 179 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
10 m
(33 ft) 		3 m
(11 ft) 		9 ha
(22 ac) 		293,417 m3
(238 ac-ft) 		0 km2
(0.2 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
1994 30 6.1
1995 3.5 27 6.1 10.0 18 2.9 4.1 5.3 6 4.1 5.6 7.2
1996 3.8 32 6.0 9.0 8 3.6 4.0 5.6 5 4.0 4.3 4.7
1997 2.8 29 6.3 8.5 4.2 4.5 4.9 4 3.7 5.6 7.5
1998 2.4 28 6.2 11.0 8 3.2 4.0 4.4 6 3.4 3.7 4.0
1999 1.3 31 6.2 3.2 4.1 4.5 4
2000 2.5 33 6.2 12.5 2.9 4.1 5.1 7 3.8 5.5 7.3
2001 3.3 32 6.3 11.0 3.7 4.3 5.2 6 3.0 4.5 6.0
2002 2.8 31 6.2 15.0 3.0 4.0 4.8 6 3.6 3.6 3.6
2003 25 3.3 31 6.4 9.0 7 3.5 4.2 5.0 6 2.3 2.4 2.4
2004 3.4 30 6.5 9.0 3.5 3.9 4.5 6 1.7 1.7 1.7
2005 28 2.2 22 6.2 8.5 3.1 4.1 4.9 6 4.1 4.5 5.0
2006 3.3 28 5.8 9.0 3.3 3.9 4.6 6 2.3 3.8 5.7
2007 18 2.5 34 6.5 12.0 3.1 4.5 6.6 6 1.9 4.6 7.3
2008 28 2.5 33 6.1 11.0 3.9 4.4 4.8 6 2.1 2.5 3.0
2009 34 2.5 30 6.0 8.5 3.7 4.2 5.2 6 1.5 2.6 3.7
2010 18 2.8 33 5.9 10.5 3.9 4.5 5.4 7 2.7 3.1 3.6
2011 27 2.9 32 6.0 12.5 3.3 4.4 5.9 6 5.3 10.2 15.0
2012 35 3.3 32 5.9 10.0 3.3 4.1 4.8 5 2.1 2.8 3.4
2013 19 3.0 27 6.5 9.0 4.0 4.9 6.0 6 1.9 2.2 2.6
2014 20 3.0 28 6.0 9.0 4.1 4.4 4.9 6 2.4 3.1 3.8
2015 17 3.0 26 6.6 8.0 3.5 5.3 6.5 6 4.4 5.5 6.7
2016 2.9 36 5.6 9.5 4.5 5.3 6.3 6 2.9 3.8 4.8
2017 16 3.0 36 6.0 12.0 3.2 4.3 4.9 6 1 2.7 3.7 4.7
2018 26 3.2 33 6.2 9.6 8 4.3 4.9 5.2 6 3.0 3.9 5.7

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
24 2.9 30 6.1 10 7.7 13 2.9 4.4 6.6 5.8 1.5 4.1 15

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2011-08-30
2012-08-21
2013-08-22
2014-08-25
2015-08-26
2016-08-25
2017-08-24
2018-08-24
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 22 8.3 25 7.6 23 8.0 22.9 8.5 24.8 7.5 22 8.0 24 7.8 22.6 7.4
1 21 8.4 24 7.3 23 8.1 22.1 8.5 24.8 7.4 22 7.9 23 7.8 22.6 7.4
2 21 8.5 23 5.1 23 8.0 21.5 8.1 24.7 7.4 22 7.9 23 7.7 22.6 7.4
3 21 8.0 22 1.0 20 5.3 20.7 6.9 23.5 6.2 22 7.9 22 6.9 22.6 7.4
4 20 7.6 18 0.4 19 1.2 19.4 2.2 21.1 3.1 22 7.1 21 5.2 22.4 6.9
5 20 6.0 14 0.1 15 0.4 15.1 0.5 17.7 0.6 18 0.3 16 0.3 18.4 0.1
6 14 1.6 12 0.1 13 0.3 11.6 0.2 14.1 0.2 13 0.3 13 0.2 13.9 0.1
7 12 0.3 11 0.1 12 0.3 10.4 0.1 12.1 0.1 11 0.2 11 0.1 11.5 0.1
8 12 0.2 11 0.1 11 0.3 9.8 0.1 11.0 0.1 11 0.2 10 0.1 10.6 0.1
9 12 0.2 11 0.1 11 0.3 10.2 0.1 10 0.2 10 0.1 10.1 0.0
10 11 0.2 9.9 0.1 10 0.2 9.9 0.0

Most recent temperature and dissolved oxygen profile plots

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