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Rating depth structure for brook trout.
Recent public catches load as you reach this section.
40-acre lake in Algoma District, Ontario. The lake tops out around 60 ft. The depth chart comes from Ontario Ministry of Natural Resources and Forestry bathymetric survey data, so the contours are survey-derived rather than computer-modeled. The depth data here comes from the Ontario MNRF survey of 1974, a decades-old survey (an MNRF lake survey). Here's the year, species by species, as the scoring engine sees it.
The outline encloses 40 acres, worked by 1.6 miles of shoreline, with a single island in the mix. With a 1.8 development index there's bank structure worth casting at, in moderation. The shallow band under 15 ft claims about 79% of the surface — that's where the groceries are. Tip to tip the water measures near 0.5 mi with a 0.3-mi widest point. It sits in Algoma District. If the bite dies, Leishman Lake is 0 mi to the east.
Early season brook trout use the shallows, holding in 2 to 15 ft. Expect a summer slide to 10 to 30 ft, then a winter hold in 3 to 20 ft. Put Main-lake point first on the milk run — a point near 2 ft that grades prime for spring. In summer the feeding windows fall in early morning and the evening. Tie on a small spoon fished deep or a trolled lake-clear wobbler + worm and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (2 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (2 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (2 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Break off the point (2 ft) | Small jigging spoon, Tungsten jig + plastic |
The chart marks 5 structure features on Roussain Lake; the deepest is Deep basin at about 40 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 Roussain Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Roussain Lake is about 60 ft (18 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1974, a decades-old survey (an MNRF lake survey).
Anglers target brook trout on Roussain Lake.
Main-lake point is the top-rated area: a point in about 2 ft of water that rates prime for brook trout in spring. Scroll up to the map for the complete spot list by 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 Roussain 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.
Leishman Lake 0 mi · Metivier Lake 1 mi · Paquette Lake 4 mi · Devil's Lake 5 mi · Fern Lake 5 mi · Boat Lake 6 mi · Deer Lake 6 mi · Vixen Lake 7 mi · Midge Lake 7 mi · Crooked Lakes 7 mi · Whitman Lake 7 mi · Northland L. 8 mi
See how Roussain Lake stacks up: best brook trout lakes in Ontario
More water nearby: Algoma District fishing maps (1026 charts). Browse all Ontario fishing maps. See every water on DepthScout. Bathymetry: published agency survey data. 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.