Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
VIENNA KENNEBEC 20 1 1.6 flushes/yr 345 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
24 m
(80 ft) 		8 m
(25 ft) 		156 ha
(385 ac) 		11,861,943 m3
(9,617 ac-ft) 		15 km2
(5.7 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
1981 14 40 3.5 4.1 5.1 5 2.1 3.2 5.5
1983 4.0 4.5 5.5 2
1984 4.8 4.9 5.0 1
1985 4.6 5.6 6.6 5
1986 12 40 20 9.5 5.3 5.3 5.3 1
1993 16 55 6.7 7 6.0 6.0 6.0 1 5.6 5.6 5.6
2002 11

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
14 45 6.7 13 9.5 3.5 5.1 6.6 2.5 2.1 4.4 5.6

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1981-09-04
1986-08-15
1993-08-13
Depth (m) TEMP DO TEMP DO TEMP DO
0 21.0 9.1 23.0 8.6 22.8 8.7
1 22.8 8.7
2 20.3 9.2 23.0 8.5 22.8 8.7
3 22.5 7.9 22.8 8.7
4 20.2 9.0 20.8 7.9 22.8 8.6
5 19.0 6.4 18.8 6.2 19.6 10.2
6 15.5 1.6 15.0 5.1 14.4 6.7
7 11.1 4.2 10.7 4.0
8 10.2 2.5 9.0 4.1 8.6 3.4
9 7.8 3.6
10 8.0 3.8 7.5 4.2 7.2 3.7
11 7.0 3.7
12 7.8 4.3 7.0 4.1 7.0 3.7
13 6.9 3.8
14 7.2 4.3 6.6 4.1 6.8 3.8
15 6.6 3.7
16 6.9 3.6 6.1 4.1 6.5 3.3
17 6.4 3.0
18 6.8 2.5 6.0 3.7 6.3 2.7
19 6.2 2.5
20 6.8 1.6 5.9 3.3 6.2 2.4
21 6.2 0.1
22 6.7 1.2 5.8 3.1
23 5.8 2.1

Most recent temperature and dissolved oxygen profile plots

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