Denis Lake Depth Map & Fishing Spots (ON)

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Lake depth chart

Denis Lake, ON

Max 33 ft

Today's read

Where to start

Fall shiner run window is on — see the hatch outlook

Hatch outlook

Fall shiner runActive window

Typical here: Sep 1 – Oct 31 · same push on the Ontario side — Simcoe's shiners migrate shallow as the water cools, and the predators ride with them

adultdaylight for the jig bite; after dark the shiners stack under dock lights with walleyes and pike mixed right in — follow the bait, not the spot — millions of shiners move together and the predators ride with them; silver profile and flash matter

Concentrates hard but travels — the school (and the walleyes under it) can be off a river mouth one week and miles upriver the next.

Jig-and-minnow is the event's signature — a frozen emerald shiner on a 1/4 oz jig drifted along the run; silver jerkbaits and trolled crankbaits take the roaming fish; blade baits under the schools.

The event happens over river mouths and the first miles upriver, warming shallow shorelines, and rocky points where the displaced bait stacks

Next on this water

Hex (giant mayfly) · mayflyMay 25 – Aug 10 · in ~9 months

June mayfly hatch (walleye lakes) · mayflyJun 1 – Aug 10 · in ~9 months

Recommendations come from depth structure and seasonal species behavior. Treat them as a starting point, not a guarantee. Contours on this water are approximations. Never use for navigation. Always check local regulations.

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Recent catches at Denis Lake

Shared by DepthScout anglers. Exact spots stay private, always.

No shared catches here yet — be the first.Log a catch from the map above and share it to put Denis Lake on the board.

Fishing Denis Lake: what the data says

39-acre lake in Parry Sound District, Ontario. The lake tops out around 33 ft. The contours come from a model of the real basin shape and its known max depth. Read them as probabilities, not soundings, and keep them out of navigation decisions. The season-by-season read for each species follows, from the map's own numbers.

Drawn out, this is 39 acres of water rimmed by 1.5 miles of bank. Index 1.7 on the shoreline: a few honest points and pockets, nothing labyrinthine. Roughly 64% of the water is 15 ft or less as modeled, the band where the food chain lives. End to end it runs roughly 0.5 mi, about 0.3 mi across. The water lies in Parry Sound District. The nearest mapped water is Red Deer L., 1 mi to the northwest.

Yellow Perch fishing at Denis Lake

Early season yellow perch use the shallows, holding in 3 to 12 ft. Expect a summer slide to 10 to 30 ft, then a winter hold in 10 to 33 ft. Put Shallow bay flat first on the milk run — a weed flat near 4 ft that grades prime for spring. In summer the feeding windows fall in 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	Shallow bay flat (4 ft)	Small jig + curly tail, Perch-pattern micro crank
Summer	10 to 30 ft	dawn	Deep basin (28 ft)	Drop-shot micro plastics, Small spoon tipped with worm
Fall	10 to 33 ft	midday	Deep basin (28 ft)	Jigging spoon (small), Perch rig / spreader
Winter	10 to 33 ft	midday & dawn	Deep basin (28 ft)	Tungsten jig + spikes, Rattle spoon (small)

Notable structure

Denis Lake carries 5 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 28 ft down.

Deep basin: deep basin, around 28 ft
Break off the point: drop-off, around 15 ft
Main-lake point: point, around 8 ft
Shallow bay flat: weed flat, around 4 ft
Back-bay flat: weed flat, around 4 ft

Denis Lake fishing regulations

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 Denis Lake specifically, so confirm the current rules before you fish.

Check the official Ontario fishing regulations →

Common questions

How deep is Denis Lake?

Denis Lake is about 33 ft (10 m) deep 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 Denis Lake?

Anglers target yellow perch on Denis Lake.

Where is the best fishing spot on Denis Lake?

Shallow bay flat is the top-rated area: a weed flat in about 4 ft of water that rates prime for yellow perch in spring. The interactive chart above rates every spot for each species and season.

When is the best time to fish Denis Lake?

For yellow perch, 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.

What are the fishing regulations for Denis Lake?

Fishing on Denis 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.

Nearby waters

Red Deer L. 1 mi · Twentyseven Lake 1 mi · Maryjane Lake 1 mi · Twin Lakes 2 mi · Capsell Lake 2 mi · Tower Lake 2 mi · East Tower L. 2 mi · Long Lake 2 mi · Kawawaymog Lake 3 mi · Lambs Lake 3 mi · Shaw Lake 3 mi · Blue L. 4 mi

See how Denis Lake stacks up: best yellow perch lakes in Ontario

More water nearby: Parry Sound District fishing maps (441 charts). Browse all Ontario fishing maps or see every water on DepthScout. 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.