Map of Beaver Lake with depth contours

Beaver Lake

44.7436° N, 78.2855° W

Depth contours from the 1969 government survey. Not for navigation.

Download the depth map (SVG)

Beaver Lake is 18.3 m deep at its deepest point, deeper than 54% of the 2,688 surveyed lakes in Ontario. It covers 1.63 km² and lies 1.9 km northeast of Catchacoma.

Maximum depth
18.3 msurveyed 1969
deeper than 54% of the 2,688 surveyed lakes in Ontario
Area
1.63 km²
larger than 77% of the 18,731 lakes in Ontario
Shoreline
11.4 km
longer than 77% of the 18,731 lakes in Ontario
Water clarity
4.1 mSecchi depth, 2002
clearer than 65% of the 1,251 monitored lakes in Ontario
Elevation
295 m

Today on the water

5.5 °C

Wind NW 4 km/h

Observed at Apsley, as of 4:00 a.m. EDT

choppy Estimated waves, next 12 hours: up to 0.2 m. Around 12 p.m., wind from the northwest: the northwest shore is sheltered, waves build toward the southeast shore.

Hourly forecast, next 24 hours
Time5 a.m.8 a.m.11 a.m.2 p.m.5 p.m.8 p.m.11 p.m.2 a.m.
Wind km/hW 15W 15W 15NW 30NW 30NW 15var. 5var. 5
Gusts km/h5050
Waves (est.) m0.10.10.10.2
Temp. °C46101314841
Precip. %2040402020000

Tonight: Partly cloudy. 60 percent chance of showers this evening. Risk of a thunderstorm early this evening. Wind west 30 km/h gusting to 50 becoming light this evening. Low plus 4.

Weather: Apsley (local forecast), as of 4:02 a.m. EDT

Sun and moon

Civil dawn
6:51 a.m.
Sunrise
7:21 a.m.
Sunset
6:38 p.m.
Civil dusk
7:08 p.m.
Moonrise
6:13 a.m.
Moonset
5:57 p.m.
Moon
Waning crescent, 1% lit

Air Quality Health Index

1 low risk

Peterborough, as of 3:00 a.m. EDT

Data Source: Environment and Climate Change Canada. Local times.

How waves are estimated

Significant wave height from the forecast hourly wind and the open-water distance (fetch) upwind, using the SMB method (US Army Corps of Engineers Shore Protection Manual, 1984), rounded up to the next 0.1 m. It is not a measurement: gusts, leftover swell and shoals can make water rougher. Under 0.2 m: calm; 0.2–0.5 m: choppy; over 0.5 m: rough.

Depth

19% of Beaver Lake is deeper than 10 m.

How to read it: the lake’s area is sorted from the shore to the deepest point. Where the curve is flat, large areas share one depth (flats and weed beds); where it drops, depth changes quickly (drop-offs).

The government depth survey from 1969 records a maximum depth of 18.3 m, drawn from 12 depth contours.

Not for navigation. Depths are from government surveys and may be outdated.

Water

Clarity was measured with a Secchi disk in 6 years between 1997 and 2002; the latest annual mean is 4.1 m.

Water clarity (Secchi depth, m)
Total phosphorus (µg/L)