Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
SHAWTOWN TWP PISCATAQUIS 42 1 2.26 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
12 m
(40 ft) 		4 m
(12 ft) 		59 ha
(146 ac) 		2,248,315 m3
(1,823 ac-ft) 		7 km2
(2.5 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 6.2 19 8 4.6 4.6 4.6 1 2.6 2.6 2.6

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
6.2 19 8 4.6 4.6 4.6 1 2.6 2.6 2.6

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1989-09-19
Depth (m) TEMP DO
0 16.2 8.9
1 16.2 8.8
2 16.2 8.9
3 16.2 8.8
4 16.1 8.8
5 16.0 8.5
6 15.9 8.2
7 15.0 5.3
8 11.4 0.5
9 10.0 0.2
10 9.0 0.1
11 8.8 0.1

Recent temperature and dissolved oxygen profile plots

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