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Fishing Jonsons Lake: what the data says
117-acre lake near Ontario. The lake tops out around 29 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 Jonsons Lake
Start shallow in spring: brook trout sit in 2 to 15 ft that time of year. Summer pushes them deeper, 9 to 29 ft, and winter fish settle into 3 to 20 ft. The spot to know is Deep basin, a deep basin in about 25 ft of water that rates prime for brook trout in summer. 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 | 2 to 15 ft | dawn & dusk | Small inline spinner (gold), Tiny spoon |
| Summer | 9 to 29 ft | dawn & dusk | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Small jigging spoon, Tungsten jig + plastic |
Brown Bullhead fishing at Jonsons Lake
In spring, brown bullhead run shallow here, mostly 2 to 8 ft. Summer pushes them deeper, 3 to 12 ft, and winter fish settle into 10 to 25 ft. Deep basin is the standout, a deep basin at roughly 25 ft, rated prime for winter brown bullhead. Best bite is after dark and the evening.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 8 ft | dusk & night | |
| Summer | 3 to 12 ft | night & dusk | |
| Fall | 5 to 15 ft | dusk | |
| Winter | 10 to 25 ft | midday |
Notable structure
- Deep basin: deep basin, around 25 ft
- Break off the point: drop-off, around 13 ft
- Main-lake point: point, around 8 ft
- Secondary point: point, around 8 ft
- Shallow bay flat: weed flat, around 3 ft
- Back-bay flat: weed flat, around 3 ft
Common questions
How deep is Jonsons Lake?
Jonsons Lake is about 29 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 Jonsons Lake?
Anglers target brook trout, brown bullhead on Jonsons Lake.
Where is the best fishing spot on Jonsons Lake?
Deep basin is the top-rated area: a deep basin in about 25 ft of water that rates prime for brown bullhead in winter. Open the map above to see every rated spot for each species and season.
When is the best time to fish Jonsons 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
Little Johns Lake · Kelly Lake · Rattrays Lake · Lower Long Lake · Crooked Lake · Middle Long Lake
See how Jonsons Lake stacks up: best brook trout 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.