Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
WESTON AROOSTOOK 45 1 0.58 flushes/yr 434 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
39 m
(128 ft) 		10 m
(31 ft) 		6,500 ha
(16,062 ac) 		616,000,000 m3
(499,399 ac-ft) 		355 km2
(137 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
1991 6.8 7.1 7.6 4
1992 4.0 4.7 6.0 4
1993 5.7 6.3 7.0 2
1994 4.3 5.0 6.1 4
1996 2.9 4.4 5.7 5
1997 2.7 5.1 7.4 5
1998 4.2 5.4 6.8 5
1999 5.7 6.7 8.1 5
2000 4.6 6.0 7.1 3
2001 6.7 7.4 8.2 3
2004 4.3 5.7 6.9 3
2005 5.1 6.3 7.0 4
2006 5.0 5.2 5.4 2
2007 7.0 7.4 7.8 3
2008 5.0 5.3 5.7 4
2009 4.5 5.5 6.4 4
2010 5.4 6.2 6.6 2
2011 5.1 5.9 6.2 3
2012 4.0 6.0 6.8 2
2013 4.2 4.5 5.3 2
2014 5.3 6.2 6.8 3
2015 6.3 6.8 7.2 1
2017 5.9 6.5 6.9 3

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
2.7 5.9 8.2 3.3 Inf 1

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

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

## Error in aggregate.data.frame(pro_melted, by = list(pro_melted$SampLocID, : no rows to aggregate
## [1] "No temperature/dissolved oxygen profile data"

Most recent temperature and dissolved oxygen profile plots

Temperature (°C), Dissolved Oxygen (mg/L) 
## [1] "No DO/Temp Profile Data"