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Rating depth structure for lake trout.
Recent public catches load as you reach this section.
217-acre lake in Thunder Bay District, Ontario. The lake tops out around 138 ft. What you see is a modeled chart: the shoreline is real, the max depth is published, and the contours between are estimated. Plan with it; don't navigate by it. Every species below gets its seasonal read from the same numbers driving the chart.
On the chart, Seeley Lake draws 218 acres inside 4.9 miles of shoreline. That shoreline is heavily fingered (development index 2.4) — bays, points and pockets everywhere, which multiplies the fishable edge. Roughly 11% of the water is 15 ft or less as modeled, the band where the food chain lives. Tip to tip the water measures near 1.5 mi with a 0.7-mi widest point. You'll find it in Thunder Bay District. For a second option, Coubran Lake lies 3 mi northwest.
The spring pattern is a shallow one: lake trout in 10 to 40 ft. Midsummer fish sit out in 50 to 120 ft before dropping to 20 to 80 ft for winter. The spot to know is Deep basin, a deep basin in about 117 ft of water that rates prime for lake trout in summer. Plan around early morning in the warm months. Summer baits: a white tube jig (deep) or a magnum spoon on downrigger gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Main-lake point (35 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 50 to 120 ft | dawn | Deep basin (117 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Main-lake point (35 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 20 to 80 ft | dawn | Break off the point (62 ft) | White tube jig, Airplane jig |
The spring pattern is a shallow one: burbot in 25 to 70 ft. Midsummer fish sit out in 50 to 120 ft before dropping to 15 to 60 ft for winter. The spot to know is Deep basin, a deep basin in about 117 ft of water that rates prime for burbot in summer. Plan around after dark and midday in the warm months. Summer baits: a heavy jig + cut bait gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 25 to 70 ft | night & dusk | Break off the point (62 ft) | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 50 to 120 ft | night & midday | Deep basin (117 ft) | Heavy jig + cut bait |
| Fall | 30 to 80 ft | night & dusk | Break off the point (62 ft) | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 15 to 60 ft | night & dusk | Break off the point (62 ft) | Glow tungsten + cut bait, Rattle spoon + minnow head |
Seeley Lake carries 6 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 117 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 Seeley Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Seeley Lake is about 138 ft (42 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, burbot on Seeley Lake.
Deep basin is the top-rated area: a deep basin in about 117 ft of water that rates prime for lake trout in summer. The map above holds the full rated-spot list for every 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 Seeley 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.
Coubran Lake 3 mi · Foxtrap Lake 16 mi · Gowan Lake 17 mi · Campcot Lake 19 mi · Killala Lake 19 mi · Santoy Lake 21 mi · Eric Lake 23 mi · Diablo Lake 23 mi · Fishnet Lake 24 mi · Box Lake 24 mi · Cairngorm Lake 26 mi · Sister Lakes 27 mi
See how Seeley Lake stacks up: best lake trout lakes in Ontario · best burbot lakes in Ontario
More water nearby: Thunder Bay District fishing maps (662 charts). Browse all Ontario fishing maps. 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.