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60-acre lake in Algoma District, Ontario. The lake tops out around 30 ft. The depth data here comes from the Ontario MNRF survey of 2022 (an MNRF lake survey). The rest of this page walks each species through its year, using the map's own scoring.
The outline encloses 60 acres, worked by 2.8 miles of shoreline — 6 islands included. That shoreline is heavily fingered (development index 2.6) — bays, points and pockets everywhere, which multiplies the fishable edge. Roughly 71% of the water is 15 ft or less, the band where the food chain lives. Figure 0.6 mi of water from one end to the other, 0.4 mi at the beam. It sits in Algoma District. Redrock Lake sits 1 mi southwest — the closest neighbouring chart.
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 Deep basin first on the milk run — a deep basin near 29 ft that grades prime for summer. 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 (1 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Deep basin (29 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (1 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Break off the point (3 ft) | Small jigging spoon, Tungsten jig + plastic |
6 pieces of structure are mapped here — Deep basin, around 29 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 Finn Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Finn Lake is about 30 ft (9 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 2022 (an MNRF lake survey).
Anglers target brook trout on Finn Lake.
Deep basin is the top-rated area: a deep basin in about 29 ft of water that rates prime for brook trout in summer. The map above holds the full rated-spot list for every 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 Finn 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.
Redrock Lake 1 mi · Maki Lake 1 mi · Heyden Lake 1 mi · Lower Island Lake 1 mi · Trout Lake 2 mi · Upper Island Lake 2 mi · Lake One 3 mi · St. Joe Lake 3 mi · Crystal Lake 3 mi · Fillion L. 4 mi · Legge Lake 4 mi · Mabel Lake 4 mi
See how Finn 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.