Alexander Lake Depth Map & Fishing Spots (Cochrane District, ON)

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Lake depth chart

Alexander Lake, ON

Max 70 ft

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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 Alexander 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 Alexander Lake on the board.

Fishing Alexander Lake: what the data says

39-acre lake in Cochrane District, Ontario. The lake tops out around 70 ft. This chart interpolates between a real shoreline and a known maximum depth. It will point you at likely water, but it is not a navigation product. The rest of this page walks each species through its year, using the map's own scoring.

The drawn water covers 39 acres wrapped in 1.1 miles of bank. Nearly circular (index 1.2), so the story is the bottom, not the bank. 20% of the surface is littoral (under ~15 ft), per the model — cover, weeds and forage water. Tip to tip the water measures near 0.4 mi with a 0.2-mi widest point. It sits in Cochrane District. If the bite dies, Grey Lake is 0 mi to the east.

Yellow Perch fishing at Alexander Lake

Spring puts yellow perch in skinny water — 3 to 12 ft is the zone. Warm water sends them out to 10 to 30 ft; cold water stacks them in 15 to 35 ft. Shoreline break is the standout, a drop-off at roughly 32 ft, rated prime for fall yellow perch. Plan around early morning in the warm months. A drop-shot micro plastics or a small spoon tipped with worm covers the summer program.

Season	Depth	Best window	Start at	Go-to baits
Spring	3 to 12 ft	midday & dawn	Shallow bay flat (6 ft)	Small jig + curly tail, Perch-pattern micro crank
Summer	10 to 30 ft	dawn	Shoreline break (32 ft)	Drop-shot micro plastics, Small spoon tipped with worm
Fall	12 to 35 ft	midday	Shoreline break (32 ft)	Jigging spoon (small), Perch rig / spreader
Winter	15 to 35 ft	midday & dawn	Shoreline break (32 ft)	Tungsten jig + spikes, Rattle spoon (small)

Notable structure

Count 4 structure marks on this chart. The deepest, Deep basin, sits near 60 ft.

Deep basin: deep basin, around 60 ft
Shoreline break: drop-off, around 32 ft
Shallow bay flat: feeding flat, around 6 ft
Back-bay flat: feeding flat, around 6 ft

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

Check the official Ontario fishing regulations →

Common questions

How deep is Alexander Lake?

Alexander Lake is about 70 ft (21 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 Alexander Lake?

Anglers target yellow perch on Alexander Lake.

Where is the best fishing spot on Alexander Lake?

Shoreline break is the top-rated area: a drop-off in about 32 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 Alexander 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 Alexander Lake?

Fishing on Alexander 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

Grey Lake 0 mi · Potvin Lake 1 mi · Extension Lake 1 mi · Cootie Lake 1 mi · Lord Lake 1 mi · Jessups L. 2 mi · Fargo Lake 2 mi · McEvay L. 18 3 mi · Sylvia Lake 3 mi · Watabeag Lake 4 mi · Cariboo Lake 5 mi · Dowsett Lake 5 mi

See how Alexander Lake 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.