Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
PIERCE POND TWP SOMERSET 30 1 0.51 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
37 m
(120 ft)
11 m
(35 ft)
470 ha
(1,161 ac)
49,910,606 m3
(40,463 ac-ft)
17 km2
(6.7 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
1985 10.0 30 3 3 8.6 8.6 8.6 1
1986 6.2 13.2 15.0 6
1988 7.5 7.5 7.5 1 1.6 1.6 1.6
1996 8.1 30 2 1 5.7 5.7 5.7 1 27.0 27.0 27.0
2003 11.2 11.4 11.6 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
9.1 30 2.5 2 5.7 9.3 15 2.2 1.6 14 27

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1985-08-23
1988-09-08
1996-08-19
Depth (m) TEMP DO TEMP DO TEMP DO
0 20.2 8.5 17.0 8.5 20.8 8.4
1 17.0 8.6 20.9 8.4
2 20.2 8.5 17.0 8.6 20.8 8.3
3 17.0 8.6 20.8 8.3
4 20.2 8.5 17.0 8.6 20.7 8.3
5 17.0 8.6 20.7 8.3
6 20.0 8.5 17.0 8.7 18.2 7.8
7 18.6 8.9 17.0 8.8 17.0 7.6
8 14.9 9.2 17.0 8.8 14.0 7.8
9 12.8 9.6 16.8 8.5 12.2 8.1
10 10.6 9.6 14.5 8.2 10.1 8.5
11 13.0 8.0 9.2 8.6
12 9.0 9.6 10.0 8.0 9.0 8.8
13 8.5 8.2 8.4 8.9
14 8.1 9.5 7.9 9.0
15 7.2 8.5 7.6 9.0
16 7.5 9.4 7.2 9.0
17 6.9 8.5 7.0 9.1
18 7.0 9.4 6.8 9.1
19 6.2 8.4 6.7 9.0
20 6.8 9.3 6.5 9.0
21 5.9 7.5 6.3 8.9
22 6.2 8.9
23 6.2 8.8
24 6.2 8.8
25 6.5 9.2 6.1 8.7
26 6.1 8.7
27 6.1 8.7
28 6.0 8.7
29 6.0 8.7
30 6.5 9.0 6.0 8.5
31
32
33
34
35 6.3 8.7 6.0 8.4
36
37
38
39
40 6.0 7.9

Recent temperature and dissolved oxygen profile plots

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