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Fishing Diabase Lake: what the data says
43-acre lake near Ontario. The lake tops out around 25 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.
Lake Whitefish fishing at Diabase Lake
Spring lake whitefish on Diabase Lake hold shallow, usually 8 to 25 ft. Summer fish stay in 8 to 25 ft, and winter fish hold in 8 to 25 ft. Deep basin is the standout, a deep basin at roughly 21 ft, rated prime for summer lake whitefish. 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 | 8 to 25 ft | midday & dawn | Small jig + waxworm, Blade bait (small) |
| Summer | 8 to 25 ft | dawn | Blade bait vertical, Small jigging spoon |
| Fall | 7 to 25 ft | dusk | Small spoon (gold), Jig + plastic larva |
| Winter | 8 to 25 ft | midday & dawn | Jigging spoon + bead chain, Tungsten jig + waxie |
Notable structure
- Deep basin: deep basin, around 21 ft
- Break off the point: drop-off, around 11 ft
- Main-lake point: point, around 8 ft
- Secondary point: point, around 8 ft
- Shallow bay flat: weed flat, around 3 ft
Common questions
How deep is Diabase Lake?
Diabase Lake is about 25 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 Diabase Lake?
Anglers target lake whitefish on Diabase Lake.
Where is the best fishing spot on Diabase Lake?
Deep basin is the top-rated area: a deep basin in about 21 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 Diabase 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
Edith Lake · Burk Lake · Dinny Lake · Obushkong Lake · Davidson Lake · Serpentine Lake
See how Diabase Lake stacks up: 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.