Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
MOUNT DESERT HANCOCK 16 1 0.32 flushes/yr 59 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
34 m
(113 ft) 		11 m
(36 ft) 		304 ha
(751 ac) 		33,369,769 m3
(27,053 ac-ft) 		13 km2
(5 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 2018 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 5.0 7.4 9.5 5
1981 6.0 7.1 9.0 4
1993 8.7 9.9 11.5 3
2003 3.0 56 6.7 8.3 9.6 11.3 4
2004 2.5 50 6.9 7.4 9.2 11.1 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
2.8 52 6.8 5 8.6 12 3.6 Inf 1

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1993-08-08
1993-08-27
2003-08-15
Depth (m) TEMP DO TEMP DO TEMP DO
0 24 8.8 22 8.8 23.5 8.7
1 24 8.8 23 8.8 23.1 8.8
2 23 8.8 23 8.8 23.0 8.7
3 23 8.8 22.9 8.7
4 22 9.0 22 8.8 22.9 8.7
5 21 9.1 22.8 8.7
6 21 9.1 22 8.8 21.6 8.8
7 21 9.1 21 8.8 20.9 9.0
8 20 9.1 21 8.8 20.6 9.0
9 20 9.1 20 8.8 20.4 9.0
10 19 9.1 20 8.8 19.3 9.0
11 18 9.1 19 8.8 17.7 8.6
12 15.2 8.5
13 13.8 8.4
14 11.7 8.7
15 10.9 9.0
16 10.3 9.1
17 9.2 9.6

Most recent temperature and dissolved oxygen profile plots

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