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11-acre lake in Cochrane District, Ontario. The lake tops out around 16 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 a transect sounding survey by the Ontario MNRF. The rest of this page walks each species through its year, using the map's own scoring.
On the chart, Thrasher Lake draws 10 acres inside 0.7 miles of shoreline. Index 1.5 on the shoreline: a few honest points and pockets, nothing labyrinthine. Tip to tip the water measures near 0.3 mi. You'll find it in Cochrane District. For a second option, Stever Lake lies 0 mi west.
The spring pattern is a shallow one: brook trout in 2 to 15 ft. As the season builds they drop to 5 to 16 ft, wintering in 2 to 16 ft. Top water on the chart: Deep basin, a deep basin in the 13 ft range, prime in summer. Time it for early morning and the evening. Summer baits: a small spoon fished deep or a trolled lake-clear wobbler + worm gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (4 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 5 to 16 ft | dawn & dusk | Deep basin (13 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (4 ft) | Small spoon (orange), Spinner |
| Winter | 2 to 16 ft | dawn | Deep basin (13 ft) | Small jigging spoon, Tungsten jig + plastic |
The chart marks 3 structure features on Thrasher Lake; the deepest is Deep basin at about 13 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 Thrasher Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Thrasher Lake is about 16 ft (5 m) deep at its deepest point. The depth data here comes from a transect sounding survey by the Ontario MNRF.
Anglers target brook trout on Thrasher Lake.
Deep basin is the top-rated area: a deep basin in about 13 ft of water that rates prime for brook trout in summer. Every other rated spot, per species and season, is on the map above.
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 Thrasher 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.
Stever Lake 0 mi · Pall Lake 1 mi · Bea Lake 1 mi · Mall Lake 1 mi · Campbell Lake 2 mi · Giunta Lake 2 mi · Lulu Lake 2 mi · Driscoll Lake 2 mi · Little Esker Lake 2 mi · Armitage Lake 2 mi · Gaf Lake 2 mi · Thackeray Lake 3 mi
See how Thrasher Lake stacks up: best brook trout lakes in Ontario
More water nearby: Cochrane District fishing maps (673 charts). Browse all Ontario fishing maps or 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.