Map of Lac Gauthier with depth contours

Lac Gauthier

46.1742° N, 74.5213° W

Depth contours from the 2011 government survey. Not for navigation.

Download the depth map (SVG)

Lac Gauthier is 15.1 m deep at its deepest point, shallower than 56% of the 1,506 surveyed lakes in Quebec. It covers 0.42 km² and lies beside Lac-Gauthier.

Maximum depth
15.1 msurveyed 2011
shallower than 56% of the 1,506 surveyed lakes in Quebec
Area
0.42 km²
larger than 58% of the 29,407 lakes in Quebec
Shoreline
3.4 km
shorter than 54% of the 29,407 lakes in Quebec
Water clarity
6.4 mSecchi depth, 2025
clearer than 88% of the 805 monitored lakes in Quebec
Elevation
323 m

Today on the water

2.7 °C

Wind calm

Observed at Mont-Tremblant, as of 6:00 a.m. EDT

calm Estimated waves, next 12 hours: up to 0.1 m. Around 7 a.m., wind from the west: the west shore is sheltered, waves build toward the east shore.

Hourly forecast, next 24 hours
Time7 a.m.10 a.m.1 p.m.4 p.m.7 p.m.10 p.m.1 a.m.4 a.m.
Wind km/hW 10W 10W 20W 20W 10W 10NW 10NW 10
Waves (est.) m0.10.10.10.1
Temp. °C7998631-1
Precip. %404040400000

Today: A mix of sun and cloud with 40 percent chance of showers. Wind becoming west 20 km/h near noon. High 9. UV index 3 or moderate.

Weather: Mont-Tremblant (local forecast), as of 6:00 a.m. EDT

Sun and moon

Civil dawn
6:37 a.m.
Sunrise
7:07 a.m.
Sunset
6:22 p.m.
Civil dusk
6:52 p.m.
Moonrise
5:57 a.m.
Moonset
5:40 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

48% of Lac Gauthier is deeper than 5 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 2011 records a maximum depth of 15.1 m, drawn from 10 depth contours.

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 Depths are from government surveys and may be outdated.

Water

Trophic status from the latest monitoring: oligotrophic.

Clarity was measured with a Secchi disk in 22 years between 2004 and 2025; the latest annual mean is 6.4 m.

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