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Fishing Thompson Lake: what the data says
113-acre lake near Ontario. The lake tops out around 58 ft. The contours are modeled from the water's real shoreline and maximum depth. Treat them as a rough guide, and never use them for navigation. Below is the species-by-species picture, pulled from the same data the map uses.
Lake Whitefish fishing at Thompson Lake
Spring lake whitefish on Thompson Lake hold shallow, usually 15 to 45 ft. They move out to 17 to 58 ft in summer and finish the year down in 17 to 58 ft. The spot to know is Deep basin, a deep basin in about 49 ft of water that rates prime for lake whitefish in summer. Plan around early morning in the warm months. Summer baits: a blade bait vertical or a small jigging spoon gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 15 to 45 ft | midday & dawn | Small jig + waxworm, Blade bait (small) |
| Summer | 17 to 58 ft | dawn | Blade bait vertical, Small jigging spoon |
| Fall | 8 to 30 ft | dusk | Small spoon (gold), Jig + plastic larva |
| Winter | 17 to 58 ft | midday & dawn | Jigging spoon + bead chain, Tungsten jig + waxie |
Yellow Perch fishing at Thompson Lake
In spring, yellow perch run shallow here, mostly 3 to 12 ft. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 15 to 35 ft. Shallow bay flat is the standout, a weed flat at roughly 6 ft, rated prime for spring yellow perch. Best bite is early morning. Tie on a drop-shot micro plastics or a small spoon tipped with worm and you're in the game.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | Tungsten jig + spikes, Rattle spoon (small) |
Northern Pike fishing at Thompson Lake
Start shallow in spring: northern pike sit in 2 to 8 ft that time of year. Summer pushes them deeper, 8 to 20 ft, and winter fish settle into 5 to 15 ft. Shallow bay flat is the standout, a weed flat at roughly 6 ft, rated prime for spring northern pike. Plan around early morning and the evening in the warm months. Summer baits: a bucktail or a weedless spoon over cabbage gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Tip-ups, Large jigging spoon |
Smallmouth Bass fishing at Thompson Lake
Spring smallmouth bass on Thompson Lake hold shallow, usually 3 to 12 ft. They move out to 10 to 30 ft in summer and finish the year down in 20 to 45 ft. The spot to know is Main-lake point, a point in about 15 ft of water that rates prime for smallmouth bass in fall. Best bite is early morning and the evening. Tie on a drop shot (goby/minnow) or a ned rig and you're in the game.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Ned rig, Tube jig |
| Summer | 10 to 30 ft | dawn & dusk | Drop shot (goby/minnow), Ned rig |
| Fall | 8 to 25 ft | midday & dawn | Jerkbait, Blade bait |
| Winter | 20 to 45 ft | midday | Blade bait, Hair jig |
Rock Bass fishing at Thompson Lake
Spring rock bass on Thompson Lake hold shallow, usually 2 to 10 ft. They move out to 5 to 20 ft in summer and finish the year down in 12 to 30 ft. The spot to know is Main-lake point, a point in about 15 ft of water that rates prime for rock bass in summer. Plan around the evening in the warm months. Summer baits: a ned rig (small) or a marabou jig gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | 1/16 oz jig + grub, Small inline spinner |
| Summer | 5 to 20 ft | dusk | Ned rig (small), Marabou jig |
| Fall | 8 to 22 ft | midday | Small tube jig, Inline spinner |
| Winter | 12 to 30 ft | midday | Tungsten jig + plastic, Small spoon + spike |
Pumpkinseed fishing at Thompson Lake
Start shallow in spring: pumpkinseed sit in 1 to 8 ft that time of year. By summer they slide out to 2 to 10 ft, and by winter most fish are in 6 to 18 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 6 ft that scores prime in spring. In summer the feeding windows fall in the evening and early morning. A micro tube or a sponge spider (fly) covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 1 to 8 ft | midday & dusk | Micro jig under a float, Tiny beetle-spin |
| Summer | 2 to 10 ft | dusk & dawn | Micro tube, Sponge spider (fly) |
| Fall | 4 to 14 ft | dusk & dawn | Micro jig + waxworm, Small spoon tipped |
| Winter | 6 to 18 ft | dawn | Tungsten ice jig + plastic, Tiny spoon |
Notable structure
- Deep basin: deep basin, around 49 ft
- Break off the point: drop-off, around 26 ft
- Main-lake point: point, around 15 ft
- Secondary point: point, around 15 ft
- Shallow bay flat: weed flat, around 6 ft
- Back-bay flat: weed flat, around 6 ft
Common questions
How deep is Thompson Lake?
Thompson Lake is about 58 ft 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.
What fish are in Thompson Lake?
Anglers target smallmouth bass, northern pike, yellow perch, lake whitefish, rock bass, pumpkinseed on Thompson Lake.
Where is the best fishing spot on Thompson Lake?
Deep basin is the top-rated area: a deep basin in about 49 ft of water that rates prime for lake whitefish in summer. Open the map above to see every rated spot for each species and season.
When is the best time to fish Thompson Lake?
For lake whitefish, 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.
Nearby waters
Sturgeon Lake · Perch Lake · Gwatkin Lake · Maskinonge Lake · Thomas Lake · Mackenzie Lake
See how Thompson Lake stacks up: best smallmouth bass lakes in Ontario · best northern pike lakes in Ontario · best yellow perch lakes in Ontario · best lake whitefish lakes in Ontario
Browse all Ontario fishing maps or every water on DepthScout. How we build these maps. For fishing guidance only, never navigation.