Map of Lac Mondor with depth contours

Lac Mondor

46.6254° N, 72.7694° W

Depth contours from the 2012 government survey. Not for navigation.

Download the depth map (SVG)

Lac Mondor is 5.5 m deep at its deepest point, shallower than 90% of the 1,506 surveyed lakes in Quebec. It covers 0.16 km² and lies beside Lac-Mondor.

Maximum depth
5.5 msurveyed 2012
shallower than 90% of the 1,506 surveyed lakes in Quebec
Area
0.16 km²
smaller than 75% of the 29,407 lakes in Quebec
Shoreline
1.8 km
shorter than 89% of the 29,407 lakes in Quebec
Water clarity
4.8 mSecchi depth, 2025
clearer than 68% of the 805 monitored lakes in Quebec
Elevation
146 m

Today on the water

4.9 °C

Wind WSW 7 km/h

Observed at Shawinigan, 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 20W 20W 20NW 20NW 15NW 10
Gusts km/h404040
Waves (est.) m0.10.10.10.1
Temp. °C981012121097
Precip. %4030303030000

Tonight: Partly cloudy with 40 percent chance of showers. Wind west 20 km/h becoming light this evening. Low 8.

Weather: Shawinigan (local forecast), as of 3:03 a.m. EDT

Sun and moon

Civil dawn
6:30 a.m.
Sunrise
7:00 a.m.
Sunset
6:15 p.m.
Civil dusk
6:45 p.m.
Moonrise
5:50 a.m.
Moonset
5:33 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

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 2012 records a maximum depth of 5.5 m, drawn from 7 depth contours.

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 Depths are from government surveys and may be outdated.

Water

Trophic status from the latest monitoring: oligo-mesotrophic (transition).

Clarity was measured with a Secchi disk in 19 years between 2005 and 2025; the latest annual mean is 4.8 m.

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