Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
MAYFIELD TWP SOMERSET 31 1 2.08 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
19 m
(62 ft) 		6 m
(20 ft) 		156 ha
(385 ac) 		9,338,331 m3
(7,571 ac-ft) 		13 km2
(4.9 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
1993 5.5 7 7.8 7.8 7.8 1 1.4 1.4 1.4
1998 6.0 24 13 15 4.1 5.3 6.8 5 5.9 5.9 5.9
1999 6.3 6.3 6.3 1
2002 5.8 6.0 6.2 2
2003 8.5 6.2 30 7 6.3 6.3 6.4 1 2.3 2.3 2.3
2010 9 6.5 6.6 6.6 1 2.4 2.4 2.4

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
8.5 5.9 27 9 15 4.1 6.4 7.8 1.8 1.4 3 5.9

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1993-08-27
1998-08-13
2003-08-12
2010-08-30
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO
0 24.0 8.5 24 8.0 24.1 8.0 22 9.0
1 24.0 8.6 24 8.1 24.0 8.1 22 9.0
2 23.2 8.5 23 7.9 23.3 8.1 22 9.0
3 22.8 8.6 23 7.9 22.5 8.2 21 8.9
4 22.2 8.6 23 7.9 22.1 8.1 21 8.9
5 22.0 8.5 20 7.9 20.4 8.0 21 8.9
6 21.5 8.3 17 4.2 15.7 7.4 20 8.5
7 17.2 6.3 15 3.5 12.3 6.0 18 5.0
8 14.7 4.3 13 2.2 10.2 4.8 14 1.7
9 12.0 3.8 12 2.1 9.5 4.5 12 1.7
10 10.8 4.1 12 2.1 9.1 4.4 12 1.9
11 10.4 4.0 12 2.1 8.9 4.2 12 1.8
12 10.1 3.5 11 1.8 8.8 4.2 11 1.6
13 9.8 2.9 11 1.8 8.6 4.2 11 1.3
14 9.3 2.6 11 0.3 8.3 4.1 11 1.2
15 9.1 2.0 8.2 3.6 11 1.1
16 9.0 1.9 8.1 3.2 11 0.9
17 9.0 1.7 11 0.7

Recent temperature and dissolved oxygen profile plots

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