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30-acre lake in Algoma District, Ontario. The lake tops out around 32 ft. The depth data here comes from the Ontario MNRF survey of 1997 (a transect sounding survey). The rest of this page walks each species through its year, using the map's own scoring.
Drawn out, this is 30 acres of water rimmed by 1.3 miles of bank, with a single island in the mix. The shoreline is moderately structured (index 1.7) — enough points and pockets to pattern. About 50% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. End to end it runs roughly 0.5 mi, about 0.2 mi across. You'll find it in Algoma District. The nearest mapped water is Olver L. (LeCaron L. 11), 1 mi to the northwest.
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. Break off the point is the standout, a drop-off at roughly 27 ft, rated prime for summer 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 | Main-lake point (9 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (27 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (9 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | open water | Small jigging spoon, Tungsten jig + plastic |
4 pieces of structure are mapped here — Deep basin, around 32 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 Armstrong Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Armstrong Lake is about 32 ft (10 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1997 (a transect sounding survey).
Anglers target brook trout on Armstrong Lake.
Break off the point is the top-rated area: a drop-off in about 27 ft of water that rates prime for brook trout in summer. 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 Armstrong 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.
Olver L. (LeCaron L. 11) 1 mi · Woodside Lake 1 mi · Kirk Lake 1 mi · Radenhurst Lake 1 mi · Penikett Lake 2 mi · Platypus L. 2 mi · Willisam Lake 2 mi · Big Horseshoe Lake 2 mi · Makela L. 2 mi · Stinkfish Lake 3 mi · Black Lake 3 mi · Kirkpatrick Lake 3 mi
See how Armstrong 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.