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Fishing Slim Lake: what the data says
175-acre lake near Ontario. The lake tops out around 120 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. Here is how the season plays out for each species, straight from the data behind the map.
Brook Trout fishing at Slim Lake
Spring brook trout on Slim Lake hold shallow, usually 2 to 15 ft. By summer they slide out to 10 to 30 ft, and by winter most fish are in 3 to 20 ft. Shallow bay flat is the standout, a weed flat at roughly 6 ft, rated good for spring 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 | 2 to 15 ft | dawn & dusk | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 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 |
Notable structure
- Deep basin: deep basin, around 102 ft
- Break off the point: drop-off, around 54 ft
- Main-lake point: point, around 30 ft
- Secondary point: point, around 30 ft
- Shallow bay flat: weed flat, around 6 ft
- Back-bay flat: weed flat, around 6 ft
Common questions
How deep is Slim Lake?
Slim Lake is about 120 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 Slim Lake?
Anglers target brook trout on Slim Lake.
Where is the best fishing spot on Slim Lake?
Shallow bay flat is the top-rated area: a weed flat in about 6 ft of water that rates good for brook trout in spring. Open the map above to see every rated spot for each species and season.
When is the best time to fish Slim 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
Insect Lake · Daniel Lake · Lloyd Lake · David Lake · Susie Lake · Young Lake
See how Slim Lake stacks up: best brook trout lakes in Ontario
Browse all Ontario fishing maps or every water on DepthScout. How we build these maps. For fishing guidance only, never navigation.