Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
CHESTERVILLE FRANKLIN 20 1 5.37 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
7 m
(24 ft) 		4 m
(13 ft) 		46 ha
(114 ac) 		1,894,239 m3
(1,536 ac-ft) 		8 km2
(3 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
1983 2.7 2.8 2.8 1
1989 10 2.0 2.0 2.0 1
1997 13 48 7.3 11 18 3.0 3.5 3.8 1 6.7 6.7 6.7
1998 2.1 3.0 3.9 6
1999 3.4 4.5 5.1 4
2000 3.2 3.9 4.3 6
2001 12 54 7.2 11 14 3.0 4.0 4.9 7 3.8 3.8 3.8
2002 3.6 4.0 4.5 6
2003 2.9 4.2 4.9 6
2004 3.3 4.0 4.9 6
2005 2.6 3.5 4.2 6
2006 74 13 60 7.2 11 38 2.4 3.4 4.0 7 5.6 5.6 5.6
2007 3.5 4.2 5.1 6
2008 2.2 3.1 3.8 4
2009 2.0 3.2 4.0 6
2010 3.5 4.0 4.4 5
2011 38 14 53 7.3 11 8 36 2.5 3.3 3.9 5 4.9 4.9 4.9
2012 2.8 3.4 4.0 6
2013 2.5 3.3 4.2 5
2014 2.8 3.3 4.2 5
2015 3.8 4.1 4.6 4
2016 26 15 57 7.2 10 27 3.8 4.4 5.2 5 3.2 3.2 3.2

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
46 13 54 7.2 11 9 27 2 3.6 5.2 4.9 3.2 4.8 6.7

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1997-08-18
2001-08-29
2006-08-21
2011-08-18
2016-08-11
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 23 7.7 22.9 7.9 23 8.2 24.2 7.8 25 8.0
1 23 7.7 22.9 7.7 22 7.7 22.6 7.9 25 8.0
2 23 7.7 22.8 7.8 22 6.4 22.0 7.7 24 8.0
3 22 5.9 19.3 0.4 20 5.0 20.7 6.4 24 7.6
4 17 0.2 15.1 0.5 18 0.4 16.5 0.4 23 5.0
5 14 0.1 12.6 0.1 14 0.2 12.1 0.3 16 0.6
6 12 0.1 10.7 0.1 12 0.2 10.0 0.2 14 0.4
7 12 0.1 9.4 0.1 12 0.1 9.7 0.2 12 0.4

Recent temperature and dissolved oxygen profile plots

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