Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
WILTON FRANKLIN 19 1 0.4 flushes/yr 756 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
23 m
(75 ft) 		11 m
(37 ft) 		127 ha
(314 ac) 		14,237,806 m3
(11,543 ac-ft) 		9 km2
(3.6 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
1974 7.6 7.6 7.6 1
1975 32 5.6 6.8 7.6 4
1976 5.5 7.3 10.1 6
1978 21 44 7.3 8.0 8.5 5
2011 8.0 9.1 10.4 3
2012 5.0 18 47 7.3 5.0 25 9.4 9.4 9.4 1 3.2 3.2 3.2
2018 4.5 18 50 7.5 3.5 10 9.1 9.4 9.9 3 1.0 1.7 2.0

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
4.8 19 47 7.4 4.2 22 5.5 8.2 10 3.3 1 2.4 3.2

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1978-08-14
2012-09-13
2018-08-16
2018-08-20
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO
0 23.4 8.6 20.3 8.4 25.7 8.2 24.3 8.5
1 20.2 8.3 25.6 8.3 24.3 8.5
2 23.0 8.6 20.1 8.3 25.4 8.3 24.3 8.5
3 20.1 8.3 25.4 8.2 24.3 8.5
4 22.8 8.7 20.0 8.3 25.2 8.3 24.3 8.4
5 20.0 8.3 25.2 8.3 24.3 8.4
6 22.1 8.7 19.8 8.3 24.5 8.8 23.9 8.8
7 17.0 11.4 19.3 8.4 18.1 13.5 18.8 12.6
8 12.2 11.6 16.3 11.2 14.6 13.6 14.1 12.8
9 10.0 11.6 12.8 10.7 11.8 13.5 12.0 12.6
10 8.7 11.4 11.2 9.4 10.4 13.0 10.4 11.8
11 7.9 11.0 10.0 8.0 8.8 12.7 9.0 11.8
12 7.0 10.8 9.3 8.1 8.0 13.0 8.3 11.7
13 8.7 6.8 7.3 11.0 7.7 10.2
14 6.1 8.6 8.3 5.6 7.7 9.5 7.2 10.2
15 8.1 5.3 6.9 8.5 6.9 8.3
16 5.6 6.5
17 5.2 5.3 7.7 4.0 6.5 6.4 6.5 6.1
18
19 7.4 1.6 6.1 3.0 6.1 2.2
20 6.0 1.1
21 7.1 0.2 5.9 0.3
22 5.8 0.2

Most recent temperature and dissolved oxygen profile plots

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