Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
GREENVILLE PISCATAQUIS 41 1 0.32 flushes/yr
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 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
2003 11 10 30 4.6 5.2 7.2 8.4 9.5 5 1.2 2.1 3.1
2004 20 9 33 7 6.5 5.0 5.9 7.1 8.3 2 1.6 1.8 2.0

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
16 9.6 32 7 5.5 5.1 5.9 7.8 9.5 3.5 1.2 1.9 3.1

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2003-08-26
2003-09-27
2004-08-16
Depth (m) TEMP DO TEMP DO TEMP DO
0 19.6 9.2 16.5 9.2 21 8.9
1 19.5 9.2 16.5 9.2 20 8.8
2 18.8 9.2 16.5 9.2 20 8.9
3 18.8 9.2 16.5 9.2 20 9.0
4 18.3 9.2 16.5 9.2 20 8.9
5 18.2 9.2 16.5 9.2 20 8.9
6 17.9 9.2 16.5 9.2 20 8.9
7 17.7 9.3 16.5 9.2 20 8.9
8 17.4 9.4 16.5 9.2 20 8.9
9 17.1 9.4 16.5 9.2 20 8.9
10 16.8 9.5 16.5 9.2 20 8.9
11 16.7 9.4 20 8.9
12 16.6 9.5 16.5 9.2 19 8.8
13 16.5 9.4 19 8.8
14 16.4 9.4 16.5 9.1 18 8.8
15 16.3 9.4 18 8.8
16 16.1 9.5 16.4 9.2 17 9.0
17 14.1 9.7 15 9.1
18 11.3 10.1 13.5 9.3 14 9.1
19 10.8 10.2 14 8.9
20 10.7 10.3 11.6 9.5 13 9.0
21 13 9.0
22 13 9.1
23 13 9.1
24 13 9.1
25 10.1 10.2 10.8 9.4 13 9.2
26
27
28
29
30 9.6 10.1 9.9 8.9 11 9.6
31
32
33
34
35 9.7 8.2 10 8.7

Recent temperature and dissolved oxygen profile plots

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