Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
BAR HARBOR HANCOCK 16 1 7.6 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
3 m
(11 ft) 		2 m
(7 ft) 		6 ha
(15 ac) 		123,710 m3
(100 ac-ft) 		1 km2
(0.5 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
1992 2.9 3.4 3.7 3 2.3 2.3 2.3
1993 2.6 3.1 3.4 3 5
1994 27 6.5 2.9 3.1 3.4 5 3
1995 4.3 25 6.5 8.0 3.0 3.0 3.0 1 1 2.0 2.0 2.0
1996 3.7 28 6.5 3.9 4.1 4.3 1 2
2008 2.6 39 6.3 7.0 4.0 4.2 4.4 6 2 1.6 2.0 2.4
2011 3.5 31 6.4 7.5 3.2 3.6 4.2 6 5 2.5 3.2 3.9
2014 3.6 25 6.3 8.0 3.9 3.9 3.9 1 1 1.6 2.0 2.5
2015 3.6 3.6 3.6 1 1
2016 6 5.0 30 6.7 14.0 3.3 3.3 3.3 1 5.6 5.6 5.6
2017 2.4 27 6.4 6.5 3.9 4.0 4.2 6 11 1.4 2.1 2.9

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
6 3.6 29 6.4 8.5 2.6 3.6 4.4 3.1 1.4 2.8 5.6

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2011-08-24
2011-09-28
2014-08-25
2014-09-22
2015-09-17
2016-08-23
2017-08-23
2017-09-28
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 24 8.0 20 9.0 24 8.2 17 9.2 24 8.3 24 8.1 24 8.2 22 8.3
1 24 8.0 20 9.0 23 8.3 17 9.3 24 8.3 24 8.0 24 8.1 22 8.2
2 24 8.0 20 9.0 22 8.2 17 9.3 22 8.1 24 8.1 24 8.2 22 8.0
3 24 8.0 20 9.0 22 8.1 17 7.5 22 8.0 24 8.0 24 8.1 22 7.6
4 23 3.7 20 0.4 24 8.1 22 7.5

Recent temperature and dissolved oxygen profile plots

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