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Fishing Olsen L. 27: what the data says
41-acre lake near Ontario. The lake tops out around 98 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.
Rock Bass fishing at Olsen L. 27
Spring rock bass on Olsen L. 27 hold shallow, usually 2 to 10 ft. By summer they slide out to 5 to 20 ft, and by winter most fish are in 12 to 30 ft. Main-lake point is the standout, a point at roughly 25 ft, rated good for fall rock bass. Best bite is the evening. 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 |
Notable structure
- Deep basin: deep basin, around 83 ft
- Break off the point: drop-off, around 44 ft
- Main-lake point: point, around 25 ft
- Secondary point: point, around 25 ft
- Shallow bay flat: weed flat, around 6 ft
Common questions
How deep is Olsen L. 27?
Olsen L. 27 is about 98 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 Olsen L. 27?
Anglers target rock bass on Olsen L. 27.
Where is the best fishing spot on Olsen L. 27?
Main-lake point is the top-rated area: a point in about 25 ft of water that rates good for rock bass in fall. Open the map above to see every rated spot for each species and season.
When is the best time to fish Olsen L. 27?
For rock bass, the summer bite is best in 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
Adelaide Lake · Bone Lake · Drew Lake · McGovern Lake · McCollough Lake · Dick Lake
See how Olsen L. 27 stacks up: best rock bass lakes in Ontario
Browse all Ontario fishing maps or every water on DepthScout. How we build these maps. For fishing guidance only, never navigation.