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192-acre lake in Thunder Bay District, Ontario. The lake tops out around 141 ft. The depth data here comes from the Ontario MNRF survey of 1981 (a transect sounding survey). Species by species, here's what the data says the year looks like.
Drawn out, this is 193 acres of water rimmed by 4.1 miles of bank, broken up by 2 islands. The shoreline is moderately structured (index 2.1) — enough points and pockets to pattern. The shallow band under 15 ft claims about 14% of the surface — that's where the groceries are. Call it 1.1 mi long by 0.4 mi wide at the broadest reach. The water lies in Thunder Bay District. The nearest mapped water is Osemigwemowin Lake, 2 mi to the southeast.
In spring, lake trout run shallow here, mostly 10 to 40 ft. Summer pushes them deeper, 50 to 120 ft, and winter fish settle into 20 to 80 ft. Main-lake point is the standout, a point at roughly 19 ft, rated prime for spring lake trout. Time it for early morning. You won't need more than a white tube jig (deep) or a magnum spoon on downrigger most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Main-lake point (19 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 50 to 120 ft | dawn | Break off the point (92 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Main-lake point (19 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 20 to 80 ft | dawn | Break off the point (92 ft) | White tube jig, Airplane jig |
When the water first warms, walleye slide up into 4 to 15 ft. Summer is a 15 to 35 ft game here, winter a 20 to 40 ft one. Start at Main-lake point. It's a point holding about 19 ft of water and rates prime come fall. The feeding windows run the evening and early morning. Keep a crawler harness on bottom bouncer or a deep crankbait (trolled) rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | Main-lake point (19 ft) | 1/8 oz jig + minnow, Hair jig |
| Summer | 15 to 35 ft | dusk & dawn | Main-lake point (19 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 12 to 40 ft | dusk & night | Main-lake point (19 ft) | Jigging rap, Jig + big minnow |
| Winter | 20 to 40 ft | dusk & dawn | Secondary point (27 ft) | Jigging spoon + minnow head, Rattle bait |
Count 6 structure marks on this chart. The deepest, Deep basin, sits near 138 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 Cooney Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Cooney Lake is about 141 ft (43 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1981 (a transect sounding survey).
Anglers target lake trout, walleye on Cooney Lake.
Main-lake point is the top-rated area: a point in about 19 ft of water that rates prime for walleye in fall. Scroll up to the map for the complete spot list by species and season.
For lake trout, 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 Cooney 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.
Osemigwemowin Lake 2 mi · Crevasse Lake 3 mi · Hornick Lake 4 mi · Obonga Lake 7 mi · Kopka River 8 mi · Jackinnes Lake 9 mi · Pangloss Lake 11 mi · Awkward Lake 12 mi · Kopka Lake 14 mi · Maggotte Lake 14 mi · Kenakskaniss Lake 15 mi · North Whalen Lake 16 mi
See how Cooney Lake stacks up: best walleye lakes in Ontario · best lake trout lakes in Ontario
More water nearby: Thunder Bay District fishing maps (662 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.