Map of Lac Ferré with depth contours

Lac Ferré

48.2211° N, 68.4413° W

Depth contours from the 1982 government survey. Not for navigation.

Download the depth map (SVG)

Lac Ferré is 15.8 m deep at its deepest point, shallower than 53% of the 1,506 surveyed lakes in Quebec. It covers 1.33 km² and lies 12 km south of Saint-Pie.

Maximum depth
15.8 msurveyed 1982
shallower than 53% of the 1,506 surveyed lakes in Quebec
Area
1.33 km²
larger than 78% of the 29,407 lakes in Quebec
Shoreline
6.7 km
longer than 70% of the 29,407 lakes in Quebec
Water clarity
5.9 mSecchi depth, 2010
clearer than 83% of the 805 monitored lakes in Quebec
Elevation
165 m

Today on the water

7.1 °C

Wind SW 18 km/h

Observed at Rimouski, as of 3:00 a.m. EDT

choppy Estimated waves, next 12 hours: up to 0.2 m. Around 4 a.m., wind from the southwest: the southwest shore is sheltered, waves build toward the northeast 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/hSW 20W 20W 20W 20W 20W 20W 30W 30
Gusts km/h40404040405050
Waves (est.) m0.20.10.10.1
Temp. °C87898665
Precip. %00303030000

Tonight: A few showers ending late this evening then partly cloudy. Risk of a thunderstorm this evening. Wind southwest 20 km/h. Low 7.

Weather: Rimouski (local forecast), as of 3:00 a.m. EDT

Sun and moon

Civil dawn
6:13 a.m.
Sunrise
6:44 a.m.
Sunset
5:56 p.m.
Civil dusk
6:27 p.m.
Moonrise
5:33 a.m.
Moonset
5:14 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

12% of Lac Ferré is shallower than 3 m, and 83% 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 1982 records a maximum depth of 15.8 m, drawn from 8 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 Depths are from government surveys and may be outdated.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 2 years between 2009 and 2010; the latest annual mean is 5.9 m.

Water clarity (Secchi depth, m)