Map of Lac Provost with depth contours

Lac Provost

46.3988° N, 74.2632° W

Depth contours from the 2019 government survey. Not for navigation.

Download the depth map (SVG)

Lac Provost is 22.2 m deep at its deepest point, deeper than 68% of the 1,506 surveyed lakes in Quebec. It covers 2.54 km² and lies beside Lac-Pimbina.

Maximum depth
22.2 msurveyed 2019
deeper than 68% of the 1,506 surveyed lakes in Quebec
Area
2.54 km²
larger than 86% of the 29,407 lakes in Quebec
Shoreline
27.1 km
longer than 91% of the 29,407 lakes in Quebec
Water clarity
3.5 mSecchi depth, 2025
less clear than 56% of the 805 monitored lakes in Quebec
Elevation
390 m

Today on the water

3.7 °C

Wind calm

Observed at Mont-Tremblant, as of 3:00 a.m. EDT

calm Estimated waves, next 12 hours: up to 0.1 m. Around 4 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 10W 20W 20W 10W 10NW 10
Waves (est.) m0.10.10.10.1
Temp. °C66799631
Precip. %6040404040000

Tonight: Partly cloudy with 60 percent chance of showers. Wind west 20 km/h becoming light this evening. Low 6.

Weather: Mont-Tremblant (local forecast), as of 3:02 a.m. EDT

Sun and moon

Civil dawn
6:36 a.m.
Sunrise
7:06 a.m.
Sunset
6:21 p.m.
Civil dusk
6:51 p.m.
Moonrise
5:57 a.m.
Moonset
5:39 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

The government depth survey from 2019 records a maximum depth of 22.2 m, drawn from 82 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 Depths are from government surveys and may be outdated.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 18 years between 2008 and 2025; the latest annual mean is 3.5 m.

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

Photos

Lac Provost
Photo: Fralambert, CC BY-SA 3.0, via Wikimedia Commons
Lac Provost
Photo: Fralambert, CC BY-SA 4.0, via Wikimedia Commons