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Fishing Thomas Lake: what the data says
187-acre lake near Ontario. The lake tops out around 6 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.
Brook Trout fishing at Thomas Lake
Spring brook trout on Thomas Lake hold shallow, usually 1 to 6 ft. Summer fish stay in 2 to 6 ft, and winter fish hold in 1 to 6 ft. Deep basin is the standout, a deep basin at roughly 5 ft, rated prime for summer brook trout. Plan around early morning and the evening in the warm months. A small spoon fished deep or a trolled lake-clear wobbler + worm covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 1 to 6 ft | dawn & dusk | Small inline spinner (gold), Tiny spoon |
| Summer | 2 to 6 ft | dawn & dusk | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 1 to 6 ft | midday & dawn | Small spoon (orange), Spinner |
| Winter | 1 to 6 ft | dawn | Small jigging spoon, Tungsten jig + plastic |
Yellow Perch fishing at Thomas Lake
In spring, yellow perch run shallow here, mostly 2 to 6 ft. Summer fish stay in 2 to 6 ft, and winter fish hold in 2 to 6 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 3 ft that scores prime in spring. In summer the feeding windows fall in 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 | 2 to 6 ft | midday & dawn | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 2 to 6 ft | dawn | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 2 to 6 ft | midday | Jigging spoon (small), Perch rig / spreader |
| Winter | 2 to 6 ft | midday & dawn | Tungsten jig + spikes, Rattle spoon (small) |
Pumpkinseed fishing at Thomas Lake
Spring pumpkinseed on Thomas Lake hold shallow, usually 1 to 6 ft. Summer fish stay in 1 to 6 ft, and winter fish hold in 2 to 6 ft. Shallow bay flat is the standout, a weed flat at roughly 3 ft, rated prime for spring pumpkinseed. Plan around the evening and early morning in the warm months. A micro tube or a sponge spider (fly) covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 1 to 6 ft | midday & dusk | Micro jig under a float, Tiny beetle-spin |
| Summer | 1 to 6 ft | dusk & dawn | Micro tube, Sponge spider (fly) |
| Fall | 2 to 6 ft | dusk & dawn | Micro jig + waxworm, Small spoon tipped |
| Winter | 2 to 6 ft | dawn | Tungsten ice jig + plastic, Tiny spoon |
Brown Bullhead fishing at Thomas Lake
Spring brown bullhead on Thomas Lake hold shallow, usually 2 to 6 ft. Summer fish stay in 2 to 6 ft, and winter fish hold in 2 to 6 ft. If you only fish one area, make it Deep basin: a deep basin around 5 ft that scores prime in winter. Plan around after dark and the evening in the warm months.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 6 ft | dusk & night | |
| Summer | 2 to 6 ft | night & dusk | |
| Fall | 2 to 6 ft | dusk | |
| Winter | 2 to 6 ft | midday |
Notable structure
- Main-lake point: point, around 6 ft
- Secondary point: point, around 6 ft
- Deep basin: deep basin, around 5 ft
- Shallow bay flat: weed flat, around 3 ft
- Back-bay flat: weed flat, around 3 ft
- Break off the point: drop-off, around 3 ft
Common questions
How deep is Thomas Lake?
Thomas Lake is about 6 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 Thomas Lake?
Anglers target yellow perch, brook trout, pumpkinseed, brown bullhead on Thomas Lake.
Where is the best fishing spot on Thomas Lake?
Shallow bay flat is the top-rated area: a weed flat in about 3 ft of water that rates prime for yellow perch in spring. Open the map above to see every rated spot for each species and season.
When is the best time to fish Thomas Lake?
For brook 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.
Nearby waters
Lake Lavieille · Bonfield Lake · Wright Lake · Farncomb Lake · Dickson Lake · Little Crooked Lake
See how Thomas Lake stacks up: best yellow perch lakes in Ontario · best brook trout lakes in Ontario · best pumpkinseed lakes in Ontario · best brown bullhead lakes in Ontario
Browse all Ontario fishing maps or every water on DepthScout. How we build these maps. For fishing guidance only, never navigation.