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Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
BAR HARBOR HANCOCK 16 1 50.96 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
4 m
(12 ft) 		1 m
(4 ft) 		2 ha
(5 ac) 		21,932 m3
(18 ac-ft) 		2 km2
(0.7 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 (μS/cm), pH: pH (standard units)

TP = Total Phosphorus (μg/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 (μg/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 39 5.9
1995 4.0 35 6.5 3.6 3.6 3.6 1 1
1996 7.4 38 6.8 2.7 3.0 3.4 3 1
2008 5.6 37 6.2 9.0 3.4 3.6 3.8 6 1 1.5 2.3 3.1
2011 5.6 46 6.1 9.5 3.0 3.6 4.0 6 2 2.9 4.8 6.8
2014 7.2 48 5.7 7.5 1.2 1.6 2.1
2017 5.5 45 6.2 9.5 3.3 3.6 4.0 6 12 3.0 3.1 3.2

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
5.9 41 6.1 8.9 2.7 3.5 4 4.4 1.2 3 6.8

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2008-08-20
2008-09-22
2011-08-25
2011-09-27
2014-08-25
2014-09-16
2017-08-24
2017-09-22
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 21 8.0 16 8.7 22 7.9 21 7.9 22 8.2 16 7.8 23 7.3 20 6.2
1 21 8.0 15 8.5 22 7.9 19 6.2 21 8.0 16 7.9 23 7.0 20 6.1
2 18 7.6 15 8.2 21 7.4 17 6.9 20 4.3 16 7.9 22 5.4 19 3.9
3 17 3.1 14 8.0 20 0.4 16 5.9 18 0.7 16 7.2 21 2.3 19 0.2
4 15 0.6 18 0.2 16 1.9 17 0.1 21 0.8 18 0.1

Recent temperature and dissolved oxygen profile plots

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