Mirky L. Depth Map & Fishing Spots (ON)

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Lake depth chart

Mirky L., ON

Max 40 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 Mirky L.

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 Mirky L. on the board.

Fishing Mirky L.: what the data says

17-acre lake in Cochrane District, Ontario. The lake tops out around 40 ft. The chart is a model: real shoreline, published maximum depth, interpolated in between. A planning tool, never a navigation product. The season-by-season read for each species follows, from the map's own numbers.

Traced from the shoreline, Mirky L. runs 17 acres with 0.8 miles of edge. The basin is a simple one (shoreline index 1.3) — close to a bowl, so the structure on the chart matters more than the bank. The shallow band under 15 ft claims about 46% of the surface on the model — that's where the groceries are. End to end it runs roughly 0.3 mi, about 0.2 mi across. You'll find it in Cochrane District. Closest neighbour on DepthScout: Cooke L., 0 mi northeast of here.

Yellow Perch fishing at Mirky L.

Spring yellow perch on Mirky L. hold shallow, usually 3 to 12 ft. They move out to 10 to 30 ft in summer and finish the year down in 15 to 35 ft. Put Deep basin first on the milk run — a deep basin near 34 ft that grades prime for fall. The feeding windows run early morning. The summer box starts with a drop-shot micro plastics or a small spoon tipped with worm.

Season	Depth	Best window	Start at	Go-to baits
Spring	3 to 12 ft	midday & dawn	open water	Small jig + curly tail, Perch-pattern micro crank
Summer	10 to 30 ft	dawn	Break off the point (18 ft)	Drop-shot micro plastics, Small spoon tipped with worm
Fall	12 to 35 ft	midday	Deep basin (34 ft)	Jigging spoon (small), Perch rig / spreader
Winter	15 to 35 ft	midday & dawn	Deep basin (34 ft)	Tungsten jig + spikes, Rattle spoon (small)

Notable structure

Count 3 structure marks on this chart. The deepest, Deep basin, sits near 34 ft.

Deep basin: deep basin, around 34 ft
Break off the point: drop-off, around 18 ft
Main-lake point: point, around 10 ft

Mirky L. 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 Mirky L. specifically, so confirm the current rules before you fish.

Check the official Ontario fishing regulations →

Common questions

How deep is Mirky L.?

Mirky L. is about 40 ft (12 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 Mirky L.?

Anglers target yellow perch on Mirky L..

Where is the best fishing spot on Mirky L.?

Deep basin is the top-rated area: a deep basin in about 34 ft of water that rates prime for yellow perch in fall. The map above holds the full rated-spot list for every species and season.

When is the best time to fish Mirky L.?

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 Mirky L.?

Fishing on Mirky L. 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

Cooke L. 0 mi · Mary L. 1 mi · Marilyn L. 1 mi · Anne L. 1 mi · Marathon Lake 1 mi · Trusz L. 1 mi · Dungg L. 2 mi · Watton L. 3 mi · Upper Bingle Lake 3 mi · Lake 12L-17 4 mi · Bingle Lake 4 mi · Lake 12L-12 4 mi

See how Mirky L. stacks up: best yellow perch lakes in Ontario

More water nearby: Cochrane District fishing maps (673 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.