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74-acre lake in Algoma District, Ontario. The lake tops out around 30 ft. The depth data here comes from the Ontario MNRF survey of 1977, a decades-old survey (a transect sounding survey). The rest of this page walks each species through its year, using the map's own scoring.
The outline encloses 74 acres, worked by 4.2 miles of shoreline, broken up by an island. The 3.5 development index tells the story — a convoluted bank whose fishable edge far outruns the acreage. Roughly 67% of the water is 15 ft or less, the band where the food chain lives. End to end it runs roughly 0.9 mi, about 0.4 mi across. Algoma District claims this one. Dossier Lake sits 1 mi south — the closest neighbouring chart.
When the water first warms, brook trout slide up into 2 to 15 ft. Summer is a 10 to 30 ft game here, winter a 3 to 20 ft one. Start at Deep basin. It's a deep basin holding about 30 ft of water and rates prime come summer. The feeding windows run early morning and the evening. Keep a small spoon fished deep or a trolled lake-clear wobbler + worm rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (8 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Deep basin (30 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (8 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Shallow bay flat (6 ft) | Small jigging spoon, Tungsten jig + plastic |
6 pieces of structure are mapped here — Deep basin, around 30 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 Little Dossier Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Little Dossier Lake is about 30 ft (9 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 Little Dossier Lake.
Deep basin is the top-rated area: a deep basin in about 30 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 Little Dossier 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.
Dossier Lake 1 mi · Almonte Lake 2 mi · Baldhead Lake 4 mi · Ear Lake 4 mi · Peller Lake 4 mi · Mijinemungshing Lake 5 mi · Maquon Lake 5 mi · Colette Lake 5 mi · Rabbit Blanket Lake 6 mi · Wabigoon Lake 6 mi · Foam Lake 8 mi · Gamitagama Lake 8 mi
See how Little Dossier 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.