Penassen Lakes Depth Map & Fishing Spots (ON)

Hatch outlook

Hopper & ant season (windward banks)Active window

Typical here: Jul 1 – Sep 15 · hoppers peak July–August; winged-ant falls show up on warm humid afternoons — a wind event, not a hatch

adultwarm, breezy afternoons, roughly 1–5pm — slap the imitation down hard — the splat is the trigger — then wait; count to three after the rise before setting

Work the windward bank on breezy summer afternoons — that's where the food is. Casting-bubble-and-hopper is the direct translation; otherwise run small topwaters and inline spinners tight along the grass edges and blowdown banks in the afternoon warmth.

The event happens over windward grassy banks, overhanging brush and blowdowns — wherever the breeze dumps the bugs

Next on this water

Spring bug season (brook trout lakes) · forageApr 25 – Jun 30 · in ~8 months

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

Recommendations come from depth structure and seasonal species behavior. Treat them as a starting point, not a guarantee. Contours here are interpolated from real agency depth surveys (state DNR / USACE). Never use for navigation. Always check local regulations.

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Recent catches at Penassen Lakes

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 Penassen Lakes on the board.

Fishing Penassen Lakes: what the data says

205-acre lake in Thunder Bay District, Ontario. The lake tops out around 46 ft. The depth data here comes from the Ontario MNRF survey of 1987 (a transect sounding survey). Every species below gets its seasonal read from the same numbers driving the chart.

Penassen Lakes's chart carries 2.8 miles of bank, broken up by an island. With a 2 development index there's bank structure worth casting at, in moderation. The shallow band under 15 ft claims about 77% of the surface — that's where the groceries are. End to end it runs roughly 0.9 mi, about 0.3 mi across. Thunder Bay District claims this one. Its nearest charted neighbour, Magone Lake, is 2 mi to the north.

Brook Trout fishing at Penassen Lakes

Spring brook trout on Penassen Lakes hold shallow, usually 2 to 15 ft. They move out to 10 to 30 ft in summer and finish the year down in 3 to 20 ft. Put Break off the point first on the milk run — a drop-off near 11 ft that grades prime for summer. The feeding windows run early morning and the evening. The summer box starts with a small spoon fished deep or a trolled lake-clear wobbler + worm.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 15 ft	dawn & dusk	Main-lake point (10 ft)	Small inline spinner (gold), Tiny spoon
Summer	10 to 30 ft	dawn & dusk	Break off the point (11 ft)	Small spoon fished deep, Trolled lake-clear wobbler + worm
Fall	2 to 15 ft	midday & dawn	Main-lake point (10 ft)	Small spoon (orange), Spinner
Winter	3 to 20 ft	dawn	Break off the point (11 ft)	Small jigging spoon, Tungsten jig + plastic

Notable structure

Count 6 structure marks on this chart. The deepest, Deep basin, sits near 46 ft.

Deep basin: deep basin, around 46 ft
Break off the point: drop-off, around 11 ft
Main-lake point: point, around 10 ft
Secondary point: point, around 4 ft
Back-bay flat: weed flat, around 3 ft
Shallow bay flat: weed flat, around 2 ft

Penassen Lakes 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 Penassen Lakes specifically, so confirm the current rules before you fish.

Check the official Ontario fishing regulations →

Common questions

How deep is Penassen Lakes?

Penassen Lakes is about 46 ft (14 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1987 (a transect sounding survey).

What fish are in Penassen Lakes?

Anglers target brook trout on Penassen Lakes.

Where is the best fishing spot on Penassen Lakes?

Break off the point is the top-rated area: a drop-off in about 11 ft of water that rates prime for brook trout in summer. The interactive chart above rates every spot for each species and season.

When is the best time to fish Penassen Lakes?

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.

What are the fishing regulations for Penassen Lakes?

Fishing on Penassen Lakes 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

Magone Lake 2 mi · Walkinshaw Lake 3 mi · Beaverlodge Lake 5 mi · Whitelily Lake 6 mi · Timmus Lake 6 mi · Golding Lake 9 mi · Barnum Lake 10 mi · Boulevard Lake 11 mi · Greenpike Lake 11 mi · Hazelwood Lake 12 mi · Warnica Lake 12 mi · Nalla Lake 13 mi

See how Penassen Lakes stacks up: best brook 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.