Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
CANAAN SOMERSET 21 1 5.57 flushes/yr 227 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
10 m
(33 ft) 		4 m
(12 ft) 		162 ha
(400 ac) 		5,847,934 m3
(4,741 ac-ft) 		61 km2
(24 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
1978 30 88 12 19 4.3 4.3 4.3 1 2.7 2.7 2.7
1981 33 74 15 48 2.3 3.1 3.7 6
1982 3.0 3.5 4.0 5
1983 2.1 3.0 3.3 7
1984 25 8 12 2.8 3.3 3.8 7 1.1 4.1 11.6
1997 3.3 3.8 4.3 4
1998 33 83 15 28 2.6 3.3 3.7 5 3.2 3.2 3.2
2000 30 78 11 3.5 3.5 3.5 1 4.6 4.6 4.6
2005 62 31 82 7.6 13 18 3.5 3.5 3.5 1 5.2 5.2 5.2
2006 64 33 83 7.6 13 22 3.3 3.3 3.3 1 3.8 3.8 3.8
2018 24 33 88 7.9 14 26 5.0 5.0 5.0 1 5.0 5.0 5.0

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
50 31 82 7.7 13 25 2.1 3.6 5 3.5 1.1 4.1 12

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1978-08-29
1981-09-03
1984-09-05
1998-08-13
2000-08-17
2005-08-24
2006-08-15
2018-08-16
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 20 8.3 21 7.9 21 8.2 23 6.3 22 8.3 22 7.4 22 7.6 26 8.1
1 19 8.2 21 7.9 21 8.2 23 6.3 21 8.2 22 7.3 22 7.5 26 8.1
2 19 8.4 21 7.6 20 7.8 23 6.2 21 8.2 22 7.2 22 7.5 26 8.0
3 19 8.2 20 6.6 20 7.8 22 3.3 21 7.8 22 7.1 22 7.5 25 6.4
4 19 8.2 20 5.2 20 7.6 19 0.3 21 4.4 18 0.5 22 7.5 24 3.9
5 19 8.2 20 5.0 18 1.9 17 0.0 20 1.2 16 0.4 21 6.2 23 1.0
6 19 8.2 20 4.2 17 0.3 16 0.0 18 0.5 14 0.4 18 0.4 20 0.6
7 17 1.3 17 0.5 15 0.2 15 0.0 16 0.2 13 0.4 16 0.3 17 0.5
8 13 0.4 14 0.5 14 0.2 13 0.0 15 0.1 12 0.5 14 0.3 12 0.5
9 12 0.3 13 0.4 13 0.2 12 0.5 14 0.3
10 13 0.4

Most recent temperature and dissolved oxygen profile plots

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