Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
GREENVILLE PISCATAQUIS 41 1 0.52 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
24 m
(77 ft) 		10 m
(31 ft) 		93 ha
(230 ac) 		8,957,842 m3
(7,262 ac-ft) 		6 km2
(2.3 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
1986 6.1 6.1 6.1 1
1987 9.0 45 6.5 6.5 6.5 1
1999 6.5 25 9 5 4.1 6.0 7.8 2 7.2 7.2 7.2

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
7.8 35 9 5 4.1 6.2 7.8 1.3 7.2 7.2 7.2

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1987-09-22
1999-08-23
Depth (m) TEMP DO TEMP DO
0 19 8.5 20.6 10.1
1 20.5 9.7
2 19 8.4 20.5 9.7
3 20.2 9.9
4 18 8.2 19.9 10.0
5 19.4 10.3
6 18 8.3 17.4 10.1
7 15.4 9.7
8 18 8.2 12.0 9.9
9 9.2 11.8
10 18 8.1 8.0 12.2
11 7.8 11.2
12 16 0.5 7.5 11.0
13 15 0.4 7.4 10.6
14 14 0.4 7.2 10.7
15 13 0.4 7.1 10.4
16 13 0.4 7.0 10.6
17 7.0 10.9
18 6.9 10.6
19 6.8 10.1

Recent temperature and dissolved oxygen profile plots

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