Data period: through 2017

Town County Delorme Map # True Basin Flushing Rate
VIENNA KENNEBEC 20 1 0.68 flushes/yr
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
6 m
(19 ft) 		3 m
(10 ft) 		22 ha
(54 ac) 		645,130 m3
(523 ac-ft) 		1 km2
(0.2 mi2)

Secchi Disk Transparency Graphs

Graph Legend: Secchi symbols = average Secchi Disk Transparency Values; tick marks = maximum and minimum values for each year.

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 4.0 6.0 4.5 5.6 6.5 6 1 2.8 2.8 2.8
1984 5.5 5.9 6.5 6 1
1985 6.0 6.2 6.5 6 8
1986 1.8 16 4.0 6.0 6.0 6.0 1 1
1987 2.0 23 5.0 5.5 5.8 6.1 5 8 1.9 1.9 1.9
1991 4.7 5.4 5.8 3
1993 4.1 4.6 5.1 3
1999 3.5 18 8.5 3.7 5.2 5.9 2 1 1.9 2.8 3.6
2000 6.0 19 15.0 4.9 4.9 4.9 1 3.1 3.1 3.1
2001 2.0 18 6.7 7.0 5.9 5.9 5.9 1 1 3.3 3.3 3.3
2003 5.8 6.1 6.4 5 5
2004 4.5 6.1 6.7 5 5
2005 5.4 6.0 6.3 5 3
2006 7 2.3 17 6.6 5 5.0 5.8 6.3 5 4
2007 5.1 6.0 6.6 5 3
2008 5.5 6.2 6.5 5 4
2009 5.1 5.7 6.3 6 3
2010 5.2 5.8 6.4 6 2
2011 7 3.5 18 6.8 5 4.3 5.4 6.2 5 2
2012 4.2 5.2 6.2 8
2013 5.0 5.9 6.6 5 1
2014 4.8 5.6 6.8 5 1
2015 4.9 5.7 6.5 6 1
2016 3.8 5.3 6.5 8 3
2017 3.8 5.7 6.3 5 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
7 3.1 18 6.7 7.6 5 3.7 5.7 6.8 4.7 1.9 2.8 3.6

Most recent late summer temperature and dissolved oxygen profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1983-08-25
1986-09-09
1987-08-18
1999-08-10
2000-08-17
2001-08-10
2016-08-10
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 22 7.7 19 8.8 26 8.4 22 8.6 21 8.3 27 8.2 24 7.3
1 21 7.6 19 8.7 26 8.4 22 8.3 21 8.3 26 8.2 24 7.2
2 21 7.6 18 8.8 24 8.7 22 8.3 21 8.3 26 8.2 24 7.3
3 22 7.6 18 8.7 25 8.8 22 8.3 21 8.3 26 8.3 24 7.3
4 21 7.5 18 8.8 23 8.8 22 8.2 21 8.3 25 8.8 24 7.0
5 21 7.1 18 8.7 23 8.7 22 8.0 21 6.8 22 7.7 24 7.0
6 21 6.5 18 8.7 22 8.0 20 4.8 24 6.4

Recent temperature and dissolved oxygen profile plots

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