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204-acre lake in Sudbury District, Ontario. The lake tops out around 72 ft. The depth data here comes from the Ontario MNRF survey of 1977, a decades-old survey (a transect sounding survey). Below is the species-by-species picture, pulled from the same data the map uses.
Traced from the shoreline, Macdonald Lake runs 205 acres with 7.3 miles of edge, with 6 islands in the mix. That shoreline is heavily fingered (development index 3.7) — bays, points and pockets everywhere, which multiplies the fishable edge. 57% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. The basin spans about 1.4 mi end to end and 0.9 mi across at its widest. You'll find it in Sudbury District. For a second option, Antrim Lake lies 3 mi west.
In spring, brook trout run shallow here, mostly 2 to 15 ft. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 3 to 20 ft. Shallow bay flat is the standout, a weed flat at roughly 4 ft, rated good for spring brook trout. Time it for early morning and the evening. You won't need more than a small spoon fished deep or a trolled lake-clear wobbler + worm most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Shallow bay flat (4 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | open water | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | open water | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Shallow bay flat (4 ft) | Small jigging spoon, Tungsten jig + plastic |
Count 7 structure marks on this chart. The deepest, Deep basin, sits near 72 ft.
Season dates, license requirements, and size and bag limits for Ontario waters are set by the Ontario fishing regulations (FMZ summary) — and special regulations can apply to Macdonald Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Macdonald Lake is about 72 ft (22 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1977, a decades-old survey (a transect sounding survey).
Anglers target brook trout on Macdonald Lake.
Shallow bay flat is the top-rated area: a weed flat in about 4 ft of water that rates good for brook trout in spring. The interactive chart above rates every spot for each species and season.
For brook trout, the summer bite is best in early morning and the evening. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Macdonald Lake is regulated by the Ontario fishing regulations (FMZ summary). Check the official Ontario regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Antrim Lake 3 mi · Raven Lake 4 mi · Antrim L. 54 5 mi · Halfway Lake 5 mi · Muldrew L. 49 and 50 5 mi · Muldrew L. 48 5 mi · Lees L. 6 mi · Otter Lake 6 mi · Twisted Lake 6 mi · Bailey Lake 6 mi · Ulster L. 57 6 mi · Kasakawawia Lake 6 mi
See how Macdonald Lake stacks up: best brook trout lakes in Ontario
More water nearby: Sudbury District fishing maps (868 charts). Browse all Ontario fishing maps or see every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. Fish here with a sonar unit that logs? Send us your depth data and we'll improve this chart, credited to you. For fishing guidance only, never navigation.