Map of Lac Beauséjour with depth contours

Lac Beauséjour

47.5904° N, 71.2914° W

Depth contours from the 1970 government survey. Not for navigation.

Download the depth map (SVG)

Lac Beauséjour is 21.8 m deep at its deepest point, deeper than 66% of the 1,506 surveyed lakes in Quebec. It covers 2.06 km² and lies 4 km west of L'Étape.

Maximum depth
21.8 msurveyed 1970
deeper than 66% of the 1,506 surveyed lakes in Quebec
Area
2.06 km²
larger than 84% of the 29,407 lakes in Quebec
Shoreline
11 km
longer than 80% of the 29,407 lakes in Quebec
Elevation
854 m

Today on the water

3.2 °C

Wind S 8 km/h

Observed at Laurentides (Réserve faunique), as of 3:00 a.m. EDT

choppy Estimated waves, next 12 hours: up to 0.2 m. Around 9 a.m., wind from the west: the west shore is sheltered, waves build toward the east shore.

Hourly forecast, next 24 hours
Time4 a.m.7 a.m.10 a.m.1 p.m.4 p.m.7 p.m.10 p.m.1 a.m.
Wind km/hW 10W 10W 20W 20W 20W 20W 20NW 20
Gusts km/h4040404040
Waves (est.) m0.10.10.20.20.2
Temp. °C3222210-1
Precip. %6040404040303030

Tonight: Mainly cloudy with 60 percent chance of rain showers or flurries. Risk of a thunderstorm early this evening. Low plus 2.

Weather: Laurentides (Réserve faunique) (local forecast), as of 3:03 a.m. EDT

Sun and moon

Civil dawn
6:24 a.m.
Sunrise
6:55 a.m.
Sunset
6:08 p.m.
Civil dusk
6:39 p.m.
Moonrise
5:45 a.m.
Moonset
5:26 p.m.
Moon
Waning crescent, 1% lit

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

22% of Lac Beauséjour is shallower than 3 m, and 30% 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 1970 records a maximum depth of 21.8 m, drawn from 14 depth contours.

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 Depths are from government surveys and may be outdated.