Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
GREENVILLE PISCATAQUIS 41 1 0.32 flushes/yr 1029 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
73 m
(240 ft) 		17 m
(55 ft) 		30,863 ha
(76,264 ac) 		5,193,000,000 m3
(4,210,034 ac-ft) 		1,032 km2
(398 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
2003 10 8.5 30 4 4 7.7 8.2 8.7 2 1.3 1.6 2
2015 17 9.0 27 7.2 4 9.3 9.3 9.3 1 2.0 2.0 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
14 8.8 28 7.2 4 4 7.7 8.8 9.3 1.5 1.3 1.8 2

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2003-08-26
2015-09-01
Depth (m) TEMP DO TEMP DO
0 19.6 9.0 23 8.6
1 19.1 9.1 22 8.6
2 18.6 9.1 21 8.6
3 18.5 9.1 21 8.6
4 18.4 9.1 21 8.6
5 18.4 9.1 21 8.5
6 18.4 9.1 21 8.5
7 18.4 9.1 21 8.5
8 18.3 9.1 21 8.5
9 17.8 9.0 21 8.5
10 17.5 9.0 21 8.4
11 16.5 9.1 21 8.4
12 16.3 9.1 21 8.4
13 15.7 9.2 19 8.1
14 14.4 9.2 18 8.0
15 12.7 9.5 16 7.9
16 11.7 9.6
17 11.4 9.7 14 8.0
18 10.8 9.7
19 10.6 9.7 13 8.0
20 10.5 9.7
21 13 8.1
22
23 12 8.0
24
25 10.0 9.8 12 7.8
26
27
28
29
30 9.3 9.8 12 5.5

Most recent temperature and dissolved oxygen profile plots

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