Map of Petit lac aux Montagnais with depth contours

Petit lac aux Montagnais

47.9131° N, 71.2166° W

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

Download the depth map (SVG)

Petit lac aux Montagnais is 6.4 m deep at its deepest point, shallower than 87% of the 1,506 surveyed lakes in Quebec. It covers 0.29 km² and lies 30 km south of Secteur-Charlevoix.

Maximum depth
6.4 msurveyed 1969
shallower than 87% of the 1,506 surveyed lakes in Quebec
Area
0.29 km²
smaller than 53% of the 29,407 lakes in Quebec
Shoreline
2.2 km
shorter than 78% of the 29,407 lakes in Quebec
Elevation
796 m

Today on the water

1.2 °C

Wind SE 6 km/h

Observed at Laurentides (Réserve faunique), as of 8:00 a.m. EDT

calm Estimated waves, next 12 hours: up to 0.1 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
Time9 a.m.12 p.m.3 p.m.6 p.m.9 p.m.12 a.m.3 a.m.6 a.m.
Wind km/hW 20W 20W 20W 20W 20NW 20NW 20NW 20
Gusts km/h404040404040
Waves (est.) m0.10.10.10.1
Temp. °C22220-1-1-1
Precip. %4040404040404040

Today: Cloudy with 40 percent chance of flurries or rain showers. Wind becoming west 20 km/h gusting to 40 this morning. Temperature steady near plus 3. UV index 2 or low.

Weather: Laurentides (Réserve faunique) (local forecast), as of 8:04 a.m. EDT

Sun and moon

Civil dawn
6:24 a.m.
Sunrise
6:55 a.m.
Sunset
6:07 p.m.
Civil dusk
6:38 p.m.
Moonrise
5:44 a.m.
Moonset
5:25 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

49% of Petit lac aux Montagnais is shallower than 3 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 6.4 m, drawn from 4 depth contours.

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 Depths are from government surveys and may be outdated.