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
1990 6.5 6.8 7.5 2
2003 7.9 8.8 31 4.2 3.8 8.2 9.1 9.9 5 1.2 1.8 2.8
2004 19.0 8.5 32 7.2 5.0 5 5.0 6.6 7.6 8.6 2 1.3 1.5 1.8

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
13 8.7 31 7.2 4.6 5 4.4 6.5 7.8 9.9 3 1.2 1.6 2.8

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
2004-08-16
Depth (m) TEMP DO TEMP DO
0 20.2 8.4 21 8.8
1 20.2 8.4 21 8.8
2 20.2 8.5 21 8.8
3 20.2 8.5 21 8.8
4 20.2 8.5 21 8.7
5 20.2 8.5 20 8.7
6 20.2 8.5 20 8.7
7 18.9 8.7 20 8.7
8 18.9 8.7 20 8.7
9 18.8 8.7 20 8.6
10 18.8 8.7 20 8.6
11 18.5 8.7 18 8.5
12 17.0 8.7 17 8.5
13 16.3 8.8 16 8.5
14 15.0 8.8 16 8.5
15 13.9 9.0 15 8.3
16 13.5 8.9 15 8.3
17 12.8 8.9 15 8.3
18 11.8 9.0 14 8.3
19 11.2 9.2 14 8.4
20 10.9 9.2
21
22
23
24
25 9.8 9.4
26
27 9.7 9.2

Most recent temperature and dissolved oxygen profile plots

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