Map of Lac Etchemin with depth contours

Lac Etchemin

46.3906° N, 70.4875° W

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

Download the depth map (SVG)

Lac Etchemin is 30.6 m deep at its deepest point, deeper than 81% of the 1,506 surveyed lakes in Quebec. It covers 2.4 km² and lies 2.3 km north of Lac-Raquette.

Maximum depth
30.6 msurveyed 2012
deeper than 81% of the 1,506 surveyed lakes in Quebec
Area
2.4 km²
larger than 85% of the 29,407 lakes in Quebec
Shoreline
10.3 km
longer than 78% of the 29,407 lakes in Quebec
Water clarity
2.8 mSecchi depth, 2025
less clear than 71% of the 805 monitored lakes in Quebec
Elevation
381 m

Today on the water

YELLOW ADVISORY - FROST · issued 4:39 a.m. EDT
Temperatures will drop to near the freezing mark overnight tonight.

Take preventative measures to protect cold-sensitive plants, trees, and crops.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to QCstorm@ec.gc.ca or post reports on social media using #QCStorm.

Official alert on weather.gc.ca · expires 11:29 p.m. EDT

7.4 °C

Wind SW 3 km/h

Observed at Beauceville, as of 7:00 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
Time8 a.m.11 a.m.2 p.m.5 p.m.8 p.m.11 p.m.2 a.m.5 a.m.
Wind km/hW 10W 20W 20W 20W 20W 20W 20W 20
Gusts km/h40404040404040
Waves (est.) m0.10.20.20.20.2
Temp. °C881196420
Precip. %404040400000

Today: Mainly cloudy with 40 percent chance of showers. Wind becoming west 20 km/h gusting to 40 this morning. High 11. UV index 3 or moderate.

Weather: Beauceville (local forecast), as of 7:02 a.m. EDT

Sun and moon

Civil dawn
6:21 a.m.
Sunrise
6:51 a.m.
Sunset
6:06 p.m.
Civil dusk
6:36 p.m.
Moonrise
5:41 a.m.
Moonset
5:24 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

52% of Lac Etchemin 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 2012 records a maximum depth of 30.6 m, drawn from 32 depth contours.

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 Depths are from government surveys and may be outdated.

Water

Trophic status from the latest monitoring: mesotrophic.

Clarity was measured with a Secchi disk in 16 years between 2009 and 2025; the latest annual mean is 2.8 m.

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