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15-acre lake in Algoma District, Ontario. The lake tops out around 76 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 1967, a decades-old survey (a transect sounding survey). Here's the year, species by species, as the scoring engine sees it.
On the chart, Thorp Lake draws 15 acres inside 0.6 miles of shoreline. A shoreline index of 1.1 says round and simple: fish relate to depth changes here, not shoreline features. Roughly 29% of the water is 15 ft or less, the band where the food chain lives. You'll find it in Algoma District. Closest neighbour on DepthScout: Rheaume Lake, 0 mi northwest of here.
Spring puts brook trout in skinny water — 2 to 15 ft is the zone. As the season builds they drop to 10 to 30 ft, wintering in 3 to 20 ft. Winter brook trout concentrate at Shoreline break, a prime-rated drop-off around 6 ft. Warm-month bites cluster around early morning and the evening. A small spoon fished deep or a trolled lake-clear wobbler + worm covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Shallow bay flat (4 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Shoreline break (6 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | open water | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Shoreline break (6 ft) | Small jigging spoon, Tungsten jig + plastic |
Thorp Lake carries 4 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 60 ft down.
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 Thorp Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Thorp Lake is about 76 ft (23 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1967, a decades-old survey (a transect sounding survey).
Anglers target brook trout on Thorp Lake.
Shoreline break is the top-rated area: a drop-off in about 6 ft of water that rates prime for brook trout in winter. 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 Thorp 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.
Rheaume Lake 0 mi · Snare Lake 1 mi · Hoath Lake 2 mi · Tarpaper Lake 2 mi · Grant Lake 3 mi · Petauguin Lake 3 mi · Daisy Mae Lake 4 mi · Hugli Lake 4 mi · Patten Lake 4 mi · Chipman Lake 4 mi · Skookum Lake 5 mi · Shelden Lake 5 mi
See how Thorp 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: 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.