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Rating depth structure for lake trout.
Shared by DepthScout anglers. Exact spots stay private, always.
93-acre lake in Ontario. The lake tops out around 79 ft. These contours are modeled — built from the real shoreline and the water's maximum depth — so read them as a guide, never as navigation. Species by species, here's what the data says the year looks like.
Drawn out, this is 95 acres of water rimmed by 3.2 miles of bank. That shoreline is heavily fingered (development index 2.3) — bays, points and pockets everywhere, which multiplies the fishable edge. Littoral water — the productive band under ~15 ft — makes up 41% of this chart, as modeled. Tip to tip the water measures near 0.7 mi with a 0.5-mi widest point. The water lies in Greater Sudbury / Grand Sudbury. Closest neighbour on DepthScout: Dewdney Lake, 3 mi northeast of here.
Start shallow in spring: lake trout sit in 10 to 40 ft that time of year. Summer pushes them deeper, 24 to 79 ft, and winter fish settle into 20 to 79 ft. The spot to know is Deep basin, a deep basin in about 67 ft of water that rates prime for lake trout in summer. Warm-month bites cluster around early morning. Throw a white tube jig (deep) or a magnum spoon on downrigger until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Main-lake point (20 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 24 to 79 ft | dawn | Deep basin (67 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Main-lake point (20 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 20 to 79 ft | dawn | Deep basin (67 ft) | White tube jig, Airplane jig |
6 pieces of structure are mapped here — Deep basin, around 67 ft, is the deepest of them.
Access data: Geospatial Ontario - Fishing Access Points. Confirm conditions and fees locally before you launch.
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 Caswell Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Caswell Lake is about 79 ft (24 m) deep at its deepest point. The contours here are modeled from the water's real shape and maximum depth, so treat them as a rough guide.
Anglers target lake trout on Caswell Lake.
Deep basin is the top-rated area: a deep basin in about 67 ft of water that rates prime for lake trout in summer. Scroll up to the map for the complete spot list by species and season.
For lake trout, the summer bite is best in early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Caswell 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.
Dewdney Lake 3 mi · Sam Martin Lake 4 mi · Chiniguchi Lake 4 mi · Marjorie Lake 5 mi · Evelyn Lake 6 mi · Irish Lake 6 mi · Rathbun Lake 6 mi · Telfer Lake 6 mi · Davis Lake 7 mi · Laura Lake 7 mi · Poulton Lake 7 mi · Parkin Lake 8 mi
See how Caswell Lake stacks up: best lake trout lakes in Ontario
More water nearby: Greater Sudbury / Grand Sudbury fishing maps (88 charts). Browse all Ontario fishing maps or see every water on DepthScout. 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.