Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
MOUNT DESERT HANCOCK 16 1 12.84 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
8 m
(25 ft) 		3 m
(10 ft) 		36 ha
(89 ac) 		1,105,019 m3
(896 ac-ft) 		4 km2
(1.6 mi2)

Secchi Disk Transparency Graphs

Graph Legend: Secchi symbols = average Secchi Disk Transparency Values; tick marks = maximum and minimum values for each year.

## [1] "No 2017 Secchi Disk Transparency Data"

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
1980 7.0 15 3.0 3.9 5.2 3 14.6 15.2 15.7
1981 10 3.0 3.0 3.0 1 5.2 5.2 5.2
1982 3.5 4.2 4.8 4
1984 5.0 3.7 5.1 6.0 7 3.2 3.2 3.2
1992 3.6 3.9 4.5 2 3.7 3.7 3.7
1993 3.8 4.9 5.9 3
1995 4.0
2004 5 3.6 4.2 4.7 3
2005 21 3.2 51 6.7 6 4.0 4.6 5.0 5
2006 5 3.2 3.9 4.3 5
2007 4.3 4.7 5.2 3
2008 7 3.8 4.5 4.9 4
2009 7 3.6 3.9 4.2 4
2010 5 3.4 4.2 4.7 4
2011 4.2 4.8 5.5 5
2012 31 4.3 59 6.3 5 24 4.5 4.5 4.5 1 2.0 2.0 2.0
2015 3.5 4.8 5.8 4
2016 3.6 5.1 5.9 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
26 4.7 55 6.4 10 5.8 24 3 4.4 6 3.8 2 5.9 16

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2009-08-26
2009-09-21
2010-08-03
2010-08-10
2010-08-30
2011-08-05
2011-08-12
2012-09-17
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 25 7.3 18 7.4 24 7.6 24 7.6 25 8.1 24 7.6 22 7.7 20 8.3
1 25 7.3 17 7.4 24 7.6 24 7.6 24 8.1 24 7.5 22 7.7 20 8.2
2 24 6.2 17 7.3 24 7.0 24 7.5 23 7.8 24 7.5 22 7.7 20 8.2
3 22 2.2 17 7.3 24 5.8 23 6.8 22 7.1 24 7.6 22 7.6 20 8.2
4 18 0.4 17 7.3 20 0.3 20 0.3 21 4.9 21 3.8 21 7.0 19 8.0
5 15 0.4 16 6.7 16 0.3 16 0.3 18 0.3 16 0.4 16 0.5 19 7.8
6 13 0.4 14 0.4 14 0.3 14 0.3 14 0.3 13 0.4 14 0.4 14 0.3
7 12 0.5 12 0.4 13 0.3 13 0.3 13 0.2 12 0.4 12 0.4 12 0.2
8 12 0.1

Recent temperature and dissolved oxygen profile plots

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