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Rating depth structure for rainbow trout.
Shared by DepthScout anglers. Exact spots stay private, always.
17-acre lake in York Regional Municipality, Ontario. The lake tops out around 80 ft. Depth here is modeled from the true shoreline and max depth rather than surveyed; use it to plan, not to navigate. Here's the year, species by species, as the scoring engine sees it.
The outline encloses 16 acres, worked by 0.8 miles of shoreline. Nearly circular (index 1.3), so the story is the bottom, not the bank. Roughly 11% of the water is 15 ft or less as modeled, the band where the food chain lives. End to end it runs roughly 0.3 mi. It sits in York Regional Municipality. Its nearest charted neighbour, Philips Lake, is 1 mi to the east.
Spring rainbow trout on Thompson Lake hold shallow, usually 5 to 20 ft. By summer they slide out to 8 to 30 ft, and by winter most fish are in 8 to 40 ft. The chart's best answer is Break off the point — drop-off, 36 ft, prime for winter. Prime time lands in early morning and the evening. The summer box starts with a dodger + spoon (deep troll) or a flutter spoon.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Main-lake point (20 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Main-lake point (20 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Main-lake point (20 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Break off the point (36 ft) | Jigging spoon, Tube jig (white) |
Come spring, look for brown bullhead tight to the bank in 2 to 8 ft. Expect a summer slide to 3 to 12 ft, then a winter hold in 10 to 25 ft. Start at Deep basin. It's a deep basin holding about 68 ft of water and rates good come winter. Prime time lands in after dark and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | dusk & night | open water | |
| Summer | 3 to 12 ft | night & dusk | open water | |
| Fall | 5 to 15 ft | dusk | open water | |
| Winter | 10 to 25 ft | midday | Deep basin (68 ft) |
The chart marks 3 structure features on Thompson Lake; the deepest is Deep basin at about 68 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 Thompson Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Thompson Lake is about 80 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 rainbow trout, brown bullhead on Thompson Lake.
Break off the point is the top-rated area: a drop-off in about 36 ft of water that rates prime for rainbow trout in winter. Scroll up to the map for the complete spot list by 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 Thompson 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.
Philips Lake 1 mi · Bond Lake 2 mi · Wilcox Lake 3 mi · Lake Seneca 3 mi · St. George Lake 4 mi · Mary Lake 4 mi · Haynes Lake 5 mi · Hackett Lake 5 mi · Simeon Lake 6 mi · Preston Lake 7 mi · Musselman Lake 13 mi · Shadow Lake 13 mi
See how Thompson Lake stacks up: best rainbow trout lakes in Ontario · best brown bullhead lakes in Ontario
More water nearby: York Regional Municipality fishing maps (16 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.