Map of Lac Morency with depth contours

Lac Morency

45.9283° N, 74.0364° W

Depth contours from the 2010 government survey. Not for navigation.

Download the depth map (SVG)

Lac Morency is 20.3 m deep at its deepest point, deeper than 63% of the 1,506 surveyed lakes in Quebec. It covers 0.25 km² and lies 1.2 km north of Lac-Fournelle.

Maximum depth
20.3 msurveyed 2010
deeper than 63% of the 1,506 surveyed lakes in Quebec
Area
0.25 km²
smaller than 58% of the 29,407 lakes in Quebec
Shoreline
2.7 km
shorter than 66% of the 29,407 lakes in Quebec
Water clarity
5.6 mSecchi depth, 2025
clearer than 79% of the 805 monitored lakes in Quebec
Elevation
264 m

Today on the water

6.9 °C

Mostly CloudyWind WSW 7 km/h

Observed at Saint-Sauveur, as of 5:00 a.m. EDT

calm Estimated waves, next 12 hours: up to 0.1 m. Around 6 a.m., wind from the west: the west shore is sheltered, waves build toward the east shore.

Hourly forecast, next 24 hours
Time6 a.m.9 a.m.12 p.m.3 p.m.6 p.m.9 p.m.12 a.m.3 a.m.
Wind km/hW 10W 10W 20W 20W 10W 10NW 10NW 10
Waves (est.) m0.10.10.10.10.1
Temp. °C58997410
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: Saint-Sauveur (local forecast), as of 5:02 a.m. EDT

Sun and moon

Civil dawn
6:35 a.m.
Sunrise
7:05 a.m.
Sunset
6:20 p.m.
Civil dusk
6:50 p.m.
Moonrise
5:55 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

48% of Lac Morency 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 2010 records a maximum depth of 20.3 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 Depths are from government surveys and may be outdated.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: oligo-mesotrophic (transition).

Clarity was measured with a Secchi disk in 13 years between 2012 and 2025; the latest annual mean is 5.6 m.

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