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2,319-acre lake in Kenora District, Ontario. The lake tops out around 13 ft. The depth data here comes from the Ontario MNRF survey of 1980 (a transect sounding survey). Below is the species-by-species picture, pulled from the same data the map uses.
Traced from the shoreline, Oneside Lake runs 2,329 acres with 15.8 miles of edge, with 26 islands in the mix. That shoreline is heavily fingered (development index 2.3) — bays, points and pockets everywhere, which multiplies the fishable edge. There is no deep basin to speak of — the entire surface is under ~15 ft, prime weed water end to end. Tip to tip the water measures near 3.4 mi with a 1.9-mi widest point. You'll find it in Kenora District. The nearest mapped water is Kenozhe Lake, 5 mi to the northeast.
Early season lake whitefish use the shallows, holding in 4 to 13 ft. Even in summer they hold at 4 to 13 ft; winter keeps them in 4 to 13 ft. The chart's best answer is Deep basin — deep basin, 13 ft, prime for summer. Best bite is early morning. Tie on a blade bait vertical or a small jigging spoon and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 13 ft | midday & dawn | Break off the point (7 ft) | Small jig + waxworm, Blade bait (small) |
| Summer | 4 to 13 ft | dawn | Deep basin (13 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 3 to 13 ft | dusk | Break off the point (7 ft) | Small spoon (gold), Jig + plastic larva |
| Winter | 4 to 13 ft | midday & dawn | Deep basin (13 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
Come spring, look for walleye tight to the bank in 3 to 13 ft. Through summer count on 4 to 13 ft; the winter hold is 4 to 13 ft. Start at Break off the point. It's a drop-off holding about 7 ft of water and rates prime come fall. Prime time lands in the evening and early morning. A crawler harness on bottom bouncer or a deep crankbait (trolled) is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 13 ft | dusk & dawn | Break off the point (7 ft) | 1/8 oz jig + minnow, Hair jig |
| Summer | 4 to 13 ft | dusk & dawn | Break off the point (7 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 4 to 13 ft | dusk & night | Break off the point (7 ft) | Jigging rap, Jig + big minnow |
| Winter | 4 to 13 ft | dusk & dawn | Deep basin (13 ft) | Jigging spoon + minnow head, Rattle bait |
Start shallow in spring: northern pike sit in 2 to 8 ft that time of year. Warm water sends them out to 4 to 13 ft; cold water stacks them in 4 to 13 ft. Top water on the chart: Break off the point, a drop-off in the 7 ft range, prime in fall. Fish it in early morning and the evening and you'll meet the bite. Throw a bucktail or a weedless spoon over cabbage until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (1 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 4 to 13 ft | dawn & dusk | Break off the point (7 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 4 to 13 ft | midday & dawn | Break off the point (7 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 4 to 13 ft | midday | Shallow bay flat (1 ft) | Tip-ups, Large jigging spoon |
6 pieces of structure are mapped here — Deep basin, around 13 ft, is the deepest of them.
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 Oneside Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Oneside Lake is about 13 ft (4 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1980 (a transect sounding survey).
Anglers target lake whitefish, walleye, northern pike on Oneside Lake.
Deep basin is the top-rated area: a deep basin in about 13 ft of water that rates prime for lake whitefish in summer. Every other rated spot, per species and season, is on the map above.
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.
Fishing on Oneside 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.
Kenozhe Lake 5 mi · Opikeigen Lake 6 mi · Armatta Lake 12 mi · Keezhik Lake 20 mi · Triangular Lake 20 mi · Kemp Lake 20 mi · Eabamet Lake 22 mi · Gifford Lake 22 mi · Nesting Lake 23 mi · Luther Lake 23 mi · Miminiska Lake 26 mi · Auger Lake 27 mi
See how Oneside Lake stacks up: best walleye lakes in Ontario · best northern pike lakes in Ontario · best lake whitefish lakes in Ontario
More water nearby: Kenora District fishing maps (1173 charts). Browse all Ontario fishing maps or see every water on DepthScout. Bathymetry credit: state fisheries survey programs. 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.