Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
T04 R09 NWP PISCATAQUIS 42 1 0.72 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
21 m
(69 ft) 		5 m
(17 ft) 		1,869 ha
(4,619 ac) 		94,860,304 m3
(76,904 ac-ft) 		115 km2
(44 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
1989 3 16 4 5.6 5.6 5.6 1 2.7 2.7 2.7
2010 4 6.8 6.8 6.9 1 1.9 1.9 1.9

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
3 16 4 5.6 6.2 6.9 1 1.9 2.3 2.7

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1989-09-21
2010-08-23
Depth (m) TEMP DO TEMP DO
0 18 9.0 22 8.0
1 18 9.0 22 8.0
2 18 8.9 22 8.0
3 18 9.0 22 7.9
4 18 9.0 22 7.8
5 18 8.9 22 8.0
6 18 8.8 22 7.9
7 18 8.7 22 8.0
8 18 8.7 22 8.0
9 18 8.7 22 7.9
10 17 8.6 21 7.5
11 17 8.4 20 5.4
12 17 8.2 18 4.3
13 15 6.4 16 3.7
14 15 6.1 16 3.7
15 13 5.0 15 3.4
16 15 3.4
17 12 4.3 15 3.3
18
19 11 4.0
20
21 11 3.6
22 11 3.1

Recent temperature and dissolved oxygen profile plots

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