Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
PIERCE POND TWP SOMERSET 30 1 8.26 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
10 m
(34 ft)
2 m
(7 ft)
28 ha
(69 ac)
599,578 m3
(486 ac-ft)
2 km2
(0.7 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 5.3 5.3 5.3 1
2015 4.8 4.8 4.8 1
2016 20 10 26 7.2 10 20 4.4 4.7 5.0 2 4.7 4.7 4.7

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
20 10 26 7.2 10 20 4.4 4.9 5.3 1.3 4.7 4.7 4.7

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
2015-09-23
2016-09-06
Depth (m) TEMP DO TEMP DO
0 19.5 8.0 22.2 8.7
1 19.1 7.8 21.6 8.7
2 18.8 7.8 21.4 8.5
3 18.7 7.8 21.0 8.5
4 17.8 5.2 20.5 7.8
5 14.0 0.6 16.4 2.8
6 10.3 0.5 11.9 0.4
7 8.6 0.4 10.0 0.2
8 7.7 0.4 8.8 0.2
9 7.3 0.4 8.4 0.1

Recent temperature and dissolved oxygen profile plots

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