Map of Lac Peasley with depth contours

Lac Peasley

45.229° N, 72.2767° W

Depth contours from the 2013 government survey. Not for navigation.

Download the depth map (SVG)

Lac Peasley is 11.3 m deep at its deepest point, shallower than 69% of the 1,506 surveyed lakes in Quebec. It covers 0.23 km² and lies 2.5 km north of Millington.

Maximum depth
11.3 msurveyed 2013
shallower than 69% of the 1,506 surveyed lakes in Quebec
Area
0.23 km²
smaller than 61% of the 29,407 lakes in Quebec
Shoreline
2.3 km
shorter than 75% of the 29,407 lakes in Quebec
Water clarity
4.5 mSecchi depth, 2025
clearer than 62% of the 805 monitored lakes in Quebec
Elevation
274 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 8:39 p.m. EDT

10.1 °C

Wind WSW 18 km/h

Observed at Magog, 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 20W 20W 20W 20W 15W 10W 10
Gusts km/h404040
Waves (est.) m0.10.10.10.1
Temp. °C7911118642
Precip. %4040404040000

Today: Mainly cloudy with 40 percent chance of showers. Risk of a thunderstorm late this afternoon. Wind becoming west 20 km/h gusting to 40 this morning. High 12. UV index 3 or moderate.

Weather: Magog (local forecast), as of 6:02 a.m. EDT

Sun and moon

Civil dawn
6:27 a.m.
Sunrise
6:57 a.m.
Sunset
6:14 p.m.
Civil dusk
6:43 p.m.
Moonrise
5:48 a.m.
Moonset
5:32 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

55% of Lac Peasley is shallower than 3 m, and 30% 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 2013 records a maximum depth of 11.3 m, drawn from 12 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 13 years between 2013 and 2025; the latest annual mean is 4.5 m.

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