Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
BROWNFIELD OXFORD 4 1 4.5 flushes/yr 374 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
14 m
(45 ft) 		5 m
(17 ft) 		27 ha
(67 ac) 		1,380,386 m3
(1,119 ac-ft) 		8 km2
(3.2 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 2018 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
1977 3.5 3.8 4.5 3
1978 3.0 3.8 5.0 6
1979 10.0 25 7 3.0 3.8 5.8 5 2.3 2.3 2.3
1980 3.0 3.9 5.0 6
1981 3.0 3.6 4.0 6
1982 7.0 24 4 14.0 2.5 3.8 4.9 6 1.4 1.4 1.4
1983 3.0 3.8 5.0 6
1984 3.2 4.4 5.0 7
1985 6.0 30 9 13.0 4.0 4.7 6.1 7
1986 2.5 3.3 4.0 7
1987 3.2 3.9 5.0 7
1988 6.0 8 9.5 3.0 3.8 5.5 6
1989 2.5 3.2 3.5 6
1990 2.7 3.5 4.5 3
1991 3.0 3.8 4.5 5
1992 5.0 5.0 5.0 4
1996 7.0 41 6 5.0 4.7 5.8 7.0 5 1.8 1.8 1.8
1997 5.1 6.1 6.7 4
1998 4.0 4.4 4.9 5
1999 4.8 5.4 5.9 5
2000 4.3 4.5 5.0 5
2001 7.3 53 6.9 11 13.5 6.0 6.0 6.0 1 3.7 3.7 3.7
2007 5.3 5.3 5.3 2
2008 25 6.0 40 6.9 6 22.5 3.8 4.6 5.3 2 2.8 2.8 2.8
2009 3.2 3.6 4.3 5
2011 4.0 4.7 5.2 5
2012 3.4 4.4 5.7 4
2013 17 6.5 37 7.0 7 14.0 3.8 4.9 5.5 3 5.8 5.8 5.8

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
21 7 36 6.9 7.7 4 13 2.5 4.3 7 4.9 1.4 3 5.8

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L

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Most recent temperature and dissolved oxygen profile plots

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