Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
GREAT POND PLT HANCOCK 34 1 19.37 flushes/yr 291 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
10 m
(34 ft) 		3 m
(10 ft) 		283 ha
(699 ac) 		8,838,046 m3
(7,165 ac-ft) 		181 km2
(70 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
2001 7 39 6.9 14 7 2.8 2.9 3 2 5.1 5.1 5.1

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
7 39 6.9 14 7 2.8 2.9 3 2 5.1 5.1 5.1

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2001-08-23
Depth (m) TEMP DO
0 24 8.4
1 23 8.3
2 22 7.7
3 22 7.5
4 22 7.6
5 22 7.7
6 22 5.9
7 20 0.4
8 18 0.2
9 14 0.1

Most recent temperature and dissolved oxygen profile plots

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