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Rating depth structure for rainbow trout.
Shared by DepthScout anglers. Exact spots stay private, always.
20-acre lake in Sudbury District, Ontario. The lake tops out around 53 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. The season-by-season read for each species follows, from the map's own numbers.
Drawn out, this is 21 acres of water rimmed by 1.1 miles of bank. Index 1.7 on the shoreline: a few honest points and pockets, nothing labyrinthine. The shallow band under 15 ft claims about 43% of the surface on the model — that's where the groceries are. Tip to tip the water measures near 0.4 mi with a 0.2-mi widest point. The water lies in Sudbury District. The nearest mapped water is Pat Lake, 0 mi to the south.
Start shallow in spring: rainbow trout sit in 5 to 20 ft that time of year. Warm water sends them out to 8 to 30 ft; cold water stacks them in 8 to 40 ft. Top water on the chart: Break off the point, a drop-off in the 24 ft range, prime in winter. Fish it in early morning and the evening and you'll meet the bite. Throw a dodger + spoon (deep troll) or a flutter spoon until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Main-lake point (13 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Break off the point (24 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Main-lake point (13 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Break off the point (24 ft) | Jigging spoon, Tube jig (white) |
Count 4 structure marks on this chart. The deepest, Deep basin, sits near 45 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 Bob Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Bob Lake is about 53 ft (16 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 rainbow trout on Bob Lake.
Break off the point is the top-rated area: a drop-off in about 24 ft of water that rates prime for rainbow trout in winter. The map above holds the full rated-spot list for every species and season.
For rainbow 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 Bob 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.
Pat Lake 0 mi · Gay Lake 1 mi · Hook Lake 1 mi · Wasapika Lake 1 mi · Cryderman Lake 4 mi · Michiwakenda Lake 4 mi · Stewart Lake 4 mi · Houston Lake 4 mi · Chlorus Lake 4 mi · Bigfour Lake 4 mi · Eplett Lake 5 mi · Bobtail Lake 5 mi
See how Bob Lake stacks up: best rainbow 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.