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90-acre lake in Timiskaming District, Ontario. The lake tops out around 10 ft. The depth chart comes from Ontario Ministry of Natural Resources and Forestry bathymetric survey data, so the contours are survey-derived rather than computer-modeled. The depth data here comes from a transect sounding survey by the Ontario MNRF. What the data behind the map says about each species, season by season:
The outline encloses 89 acres, worked by 1.6 miles of shoreline. At index 1.2 the outline is almost a bowl — read the depth changes, not the shoreline. Nothing on this chart breaks 15 ft, which makes the whole surface littoral: weeds, bait and ambush cover everywhere. Figure 0.6 mi of water from one end to the other, 0.4 mi at the beam. Timiskaming District claims this one. If the bite dies, Wynn Lake is 1 mi to the southeast.
Come spring, look for brook trout tight to the bank in 1 to 10 ft. Through summer count on 3 to 10 ft; the winter hold is 2 to 10 ft. If you only fish one area, make it Deep basin: a deep basin around 10 ft that scores prime in summer. Best bite is early morning and the evening. A small spoon fished deep or a trolled lake-clear wobbler + worm is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 10 ft | dawn & dusk | Main-lake point (2 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 3 to 10 ft | dawn & dusk | Deep basin (10 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 1 to 10 ft | midday & dawn | Main-lake point (2 ft) | Small spoon (orange), Spinner |
| Winter | 2 to 10 ft | dawn | Deep basin (10 ft) | Small jigging spoon, Tungsten jig + plastic |
Structure-wise the chart holds 6 features, led in depth by Deep basin at roughly 10 ft.
Season dates, license requirements, and size and bag limits for Ontario waters are set by the Ontario fishing regulations (FMZ summary) — and special regulations can apply to Columbus Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Columbus Lake is about 10 ft (3 m) deep at its deepest point. The depth data here comes from a transect sounding survey by the Ontario MNRF.
Anglers target brook trout on Columbus Lake.
Deep basin is the top-rated area: a deep basin in about 10 ft of water that rates prime for brook trout in summer. The map above holds the full rated-spot list for every species and season.
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.
Fishing on Columbus Lake is regulated by the Ontario fishing regulations (FMZ summary). Check the official Ontario regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Wynn Lake 1 mi · Rozon Lake 1 mi · Panagapka Lake 1 mi · Hazel Lake 1 mi · Lallan Lake 2 mi · Ramey Lake 2 mi · Old Man Lake 2 mi · Motherwell Lake 2 mi · Seahorse Lake 3 mi · Nelson Lake 3 mi · Gourlay Lake 3 mi · Gaf Lake 3 mi
See how Columbus Lake stacks up: best brook trout lakes in Ontario
More water nearby: Timiskaming District fishing maps (515 charts). Browse all Ontario fishing maps or see every water on DepthScout. Bathymetry: published agency survey data. How we build these maps. Fish here with a sonar unit that logs? Send us your depth data and we'll improve this chart, credited to you. For fishing guidance only, never navigation.