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21-acre lake in Algoma District, Ontario. The lake tops out around 39 ft. The depth data here comes from the Ontario MNRF survey of 1982 (a transect sounding survey). Species by species, here's what the data says the year looks like.
Traced from the shoreline, Dunn's Lake runs 21 acres with 0.8 miles of edge. At index 1.2 the outline is almost a bowl — read the depth changes, not the shoreline. About 25% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Figure 0.3 mi of water from one end to the other, 0.2 mi at the beam. The water lies in Algoma District. The nearest mapped water is Woodrow Lake, 1 mi to the southwest.
Spring puts brook trout in skinny water — 2 to 15 ft is the zone. Warm water sends them out to 10 to 30 ft; cold water stacks them in 3 to 20 ft. Break off the point is the standout, a drop-off at roughly 32 ft, rated prime for summer brook trout. Plan around early morning and the evening in the warm months. A small spoon fished deep or a trolled lake-clear wobbler + worm covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (16 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (32 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (16 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | open water | Small jigging spoon, Tungsten jig + plastic |
3 pieces of structure are mapped here — Deep basin, around 38 ft, is the deepest of them.
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 Dunn's Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Dunn's Lake is about 39 ft (12 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1982 (a transect sounding survey).
Anglers target brook trout on Dunn's Lake.
Break off the point is the top-rated area: a drop-off in about 32 ft of water that rates prime for brook trout in summer. Open the map above to see every rated 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 Dunn's 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.
Woodrow Lake 1 mi · Beales Lake 2 mi · Appleby Lake 2 mi · Jackpine Lake 3 mi · Constance Lake 4 mi · Brock Lakes 4 mi · Casselman's Lake 4 mi · Cumming's Lake 4 mi · Rock Lake 4 mi · Little Pickerel Lake 5 mi · Reception Lake 5 mi · Red Rock Lake 6 mi
See how Dunn's Lake stacks up: best brook trout lakes in Ontario
More water nearby: Algoma District fishing maps (1026 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.