Map of Petit lac des Cèdres with depth contours

Petit lac des Cèdres

46.3° N, 76.069° W

Depth contours from the 1954 government survey. Not for navigation.

Download the depth map (SVG)

Petit lac des Cèdres is 11.8 m deep at its deepest point, shallower than 68% of the 1,506 surveyed lakes in Quebec. It covers 2.81 km² and lies 2.7 km west of Farley.

Maximum depth
11.8 msurveyed 1954
shallower than 68% of the 1,506 surveyed lakes in Quebec
Area
2.81 km²
larger than 87% of the 29,407 lakes in Quebec
Shoreline
14.9 km
longer than 84% of the 29,407 lakes in Quebec
Water clarity
5.9 mSecchi depth, 2025
clearer than 83% of the 805 monitored lakes in Quebec
Elevation
172 m

Today on the water

5.4 °C

Wind W 7 km/h

Observed at Maniwaki, 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 northwest: the northwest shore is sheltered, waves build toward the southeast 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/hNW 10NW 20NW 20NW 20NW 10var. 5var. 5var. 5
Waves (est.) m0.10.20.20.20.1
Temp. °C7910116310
Precip. %303030300000

Today: A mix of sun and cloud with 30 percent chance of showers. Wind becoming northwest 20 km/h this morning. High 11. UV index 3 or moderate.

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

Sun and moon

Civil dawn
6:43 a.m.
Sunrise
7:13 a.m.
Sunset
6:28 p.m.
Civil dusk
6:58 p.m.
Moonrise
6:04 a.m.
Moonset
5:47 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

71% of Petit lac des Cèdres is shallower than 3 m, and 14% 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 1954 records a maximum depth of 11.8 m, drawn from 15 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 Depths are from government surveys and may be outdated.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 22 years between 2004 and 2025; the latest annual mean is 5.9 m.

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