Map of Lac McCuaig with depth contours

Lac McCuaig

45.8341° N, 76.4518° W

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

Download the depth map (SVG)

Lac McCuaig is 27.4 m deep at its deepest point, deeper than 78% of the 1,506 surveyed lakes in Quebec. It covers 0.95 km² and lies 4.7 km north of Leach Lake.

Maximum depth
27.4 msurveyed 2012
deeper than 78% of the 1,506 surveyed lakes in Quebec
Area
0.95 km²
larger than 73% of the 29,407 lakes in Quebec
Shoreline
8.2 km
longer than 74% of the 29,407 lakes in Quebec
Water clarity
6.1 mSecchi depth, 2025
clearer than 85% of the 805 monitored lakes in Quebec
Elevation
200 m

Today on the water

choppy Estimated waves, next 12 hours: up to 0.2 m. Around 12 p.m., wind from the northwest: the northwest shore is sheltered, waves build toward the southeast 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 15W 15NW 30NW 30NW 15var. 5var. 5var. 5
Gusts km/h5050
Waves (est.) m0.10.10.20.20.1
Temp. °C46101211731
Precip. %4040402020000

Today: A mix of sun and cloud. 40 percent chance of showers this morning and early this afternoon. Wind becoming northwest 30 km/h gusting to 50 near noon. High 13. UV index 3 or moderate.

Weather: Renfrew (local forecast), as of 5:05 a.m. EDT

Sun and moon

Civil dawn
6:44 a.m.
Sunrise
7:14 a.m.
Sunset
6:30 p.m.
Civil dusk
7:00 p.m.
Moonrise
6:05 a.m.
Moonset
5:49 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

The government depth survey from 2012 records a maximum depth of 27.4 m, drawn from 51 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 Depths are from government surveys and may be outdated.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 14 years between 2010 and 2025; the latest annual mean is 6.1 m.

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