Map of Macdonald Lake with depth contours

Macdonald Lake

46.9309° N, 81.5634° W

Depth contours from the 1977 government survey. Not for navigation.

Download the depth map (SVG)

Macdonald Lake is 22 m deep at its deepest point, deeper than 66% of the 2,688 surveyed lakes in Ontario. It covers 0.84 km² and lies 16 km north of Benny.

Government surveys have recorded 1 fish species here: brook trout.

Maximum depth
22 msurveyed 1977
deeper than 66% of the 2,688 surveyed lakes in Ontario
Area
0.84 km²
larger than 63% of the 18,731 lakes in Ontario
Shoreline
10.3 km
longer than 74% of the 18,731 lakes in Ontario
Fish species
1
fewer than 100% of the 2,454 surveyed lakes in Ontario
Elevation
443 m

Today on the water

4.1 °C

Mostly CloudyWind S 4 km/h

Observed at Sudbury (Greater), as of 4:00 a.m. EDT

calm Estimated waves, next 12 hours: up to 0.1 m. Around 5 a.m., wind from the west: the west shore is sheltered, waves build toward the east shore.

Hourly forecast, next 24 hours
Time5 a.m.8 a.m.11 a.m.2 p.m.5 p.m.8 p.m.11 p.m.2 a.m.
Wind km/hW 10NW 20NW 20NW 20NW 10var. 5SE 10SE 10
Gusts km/h4040
Waves (est.) m0.10.10.10.10.1
Temp. °C5481113865
Precip. %3030202020000

Tonight: Mainly cloudy with 30 percent chance of showers. Wind west 20 km/h gusting to 40 becoming light this evening. Low plus 4.

Weather: Sudbury (Greater) (local forecast), as of 4:01 a.m. EDT

Sun and moon

Civil dawn
7:05 a.m.
Sunrise
7:36 a.m.
Sunset
6:50 p.m.
Civil dusk
7:20 p.m.
Moonrise
6:27 a.m.
Moonset
6:08 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

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 1977 records a maximum depth of 22 m, drawn from 19 depth contours.

Not for navigation. Depths are from government surveys and may be outdated.

Fish

  • Brook TroutStocked

Stocking

Brook Trout8,850 fish in 6 years, most recently 2025

All stocking records (6)
YearSpeciesFishStage
2025Brook Trout400Yearlings
2024Brook Trout1,400Yearlings
2021Brook Trout1,500Yearlings
2020Brook Trout3,600Yearlings
2018Brook Trout1,200Yearlings
2016Brook Trout750Yearlings

Fishing regulations: Fisheries Management Zone 10. Check seasons and limits before you fish.