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Rating depth structure for lake trout.
Shared by DepthScout anglers. Exact spots stay private, always.
188-acre lake in Sudbury District, Ontario. The lake tops out around 93 ft. This chart interpolates between a real shoreline and a known maximum depth. It will point you at likely water, but it is not a navigation product. What follows comes from the same scoring engine that paints the spots above.
Gilbert Lake maps at 190 acres behind 3.8 miles of shoreline. A middling shoreline index (2) gives it some bays to work without being a maze. 51% of the surface is littoral (under ~15 ft), per the model — cover, weeds and forage water. End to end it runs roughly 1 mi, about 0.6 mi across. It sits in Sudbury District. Its nearest charted neighbour, Tomasina Lake, is 2 mi to the southwest.
Spring lake trout on Gilbert Lake hold shallow, usually 10 to 40 ft. By summer they slide out to 28 to 93 ft, and by winter most fish are in 20 to 80 ft. The chart's best answer is Deep basin — deep basin, 79 ft, prime for summer. Prime time lands in early morning. The summer box starts with a white tube jig (deep) or a magnum spoon on downrigger.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Main-lake point (23 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 28 to 93 ft | dawn | Deep basin (79 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Main-lake point (23 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 20 to 80 ft | dawn | Deep basin (79 ft) | White tube jig, Airplane jig |
Count 6 structure marks on this chart. The deepest, Deep basin, sits near 79 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 Gilbert Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Gilbert Lake is about 93 ft (28 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 Gilbert Lake.
Deep basin is the top-rated area: a deep basin in about 79 ft of water that rates prime for lake trout in summer. The interactive chart above rates every spot for each 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 Gilbert 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.
Tomasina Lake 2 mi · Wensley Lake 4 mi · Gilden Lake 4 mi · Kennedy Lake 4 mi · Sinaminda Lake 5 mi · Wenn Lake 5 mi · Shakwa Lake 6 mi · Dennie Lake 6 mi · Franklin Lake 6 mi · Bobwhite L. 6 mi · Lower Shakwa Lake 6 mi · Little Dennie Lake 7 mi
See how Gilbert Lake stacks up: best lake trout lakes in Ontario
More water nearby: Sudbury District fishing maps (868 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.