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209-acre lake in Sudbury District, Ontario. The lake tops out around 85 ft. The depth data here comes from the Ontario MNRF survey of 1978, a decades-old survey (a transect sounding survey). Species by species, here's what the data says the year looks like.
Traced from the shoreline, Dennie Lake runs 210 acres with 6 miles of edge, broken up by an island. The 3 development index tells the story — a convoluted bank whose fishable edge far outruns the acreage. About 30% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Figure 1.4 mi of water from one end to the other, 1 mi at the beam. You'll find it in Sudbury District. The nearest mapped water is Little Dennie Lake, 1 mi to the northwest.
The spring pattern is a shallow one: lake trout in 10 to 40 ft. Midsummer fish sit out in 26 to 85 ft before dropping to 20 to 80 ft for winter. The spot to know is Deep basin, a deep basin in about 84 ft of water that rates prime for lake trout in summer. Plan around early morning in the warm months. Summer baits: a white tube jig (deep) or a magnum spoon on downrigger gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Main-lake point (17 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 26 to 85 ft | dawn | Deep basin (84 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Main-lake point (17 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 20 to 80 ft | dawn | Deep basin (84 ft) | White tube jig, Airplane jig |
Early season yellow perch use the shallows, holding in 3 to 12 ft. Summer is a 10 to 30 ft game here, winter a 15 to 35 ft one. The chart's best answer is Back-bay flat — weed flat, 4 ft, prime for spring. Best bite is early morning. Tie on a drop-shot micro plastics or a small spoon tipped with worm and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Back-bay flat (4 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Shallow feeding flat (17 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Deep basin (84 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | Shallow feeding flat (17 ft) | Tungsten jig + spikes, Rattle spoon (small) |
The chart marks 7 structure features on Dennie Lake; the deepest is Deep basin at about 84 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 Dennie Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Dennie Lake is about 85 ft (26 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1978, a decades-old survey (a transect sounding survey).
Anglers target lake trout, yellow perch on Dennie Lake.
Deep basin is the top-rated area: a deep basin in about 84 ft of water that rates prime for lake trout in summer. Open the map above to see every rated spot for each 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 Dennie 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.
Little Dennie Lake 1 mi · Gilden Lake 2 mi · Sinaminda Lake 3 mi · Little Pogamasing Lake 3 mi · Bobwhite L. 3 mi · Squirrel Lake 4 mi · Pogamasing Lake 4 mi · Gilbert Lake 6 mi · Kennedy Lake 6 mi · Tomasina Lake 7 mi · Wensley Lake 7 mi · Franklin Lake 8 mi
See how Dennie Lake stacks up: best yellow perch lakes in Ontario · best lake trout lakes in Ontario
More water nearby: Sudbury District fishing maps (868 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.