Dexter Lake Depth Map & Fishing Spots (Sudbury District, ON)

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Lake depth chart

Dexter Lake, ON

Max 13 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

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 Dexter 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 Dexter Lake on the board.

Fishing Dexter Lake: what the data says

67-acre lake in Sudbury District, Ontario. The lake tops out around 13 ft. The chart is a model: real shoreline, published maximum depth, interpolated in between. A planning tool, never a navigation product. What the data behind the map says about each species, season by season:

Traced from the shoreline, Dexter Lake runs 67 acres with 2.3 miles of edge. Index 2 on the shoreline: a few honest points and pockets, nothing labyrinthine. Nothing on this chart breaks 15 ft, which makes the whole surface littoral: weeds, bait and ambush cover everywhere. Figure 0.8 mi of water from one end to the other, 0.4 mi at the beam. You'll find it in Sudbury District. The nearest mapped water is Luke Lake, 1 mi to the southwest.

Northern Pike fishing at Dexter Lake

In spring, northern pike run shallow here, mostly 2 to 8 ft. Midsummer fish sit out in 4 to 13 ft before dropping to 4 to 13 ft for winter. Spring northern pike concentrate at Shallow bay flat, a prime-rated weed flat around 3 ft. Fish it in early morning and the evening and you'll meet the bite. You won't need more than a bucktail or a weedless spoon over cabbage most summer days.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 8 ft	midday & dawn	Shallow bay flat (3 ft)	#5 inline spinner, Spoon (red/white)
Summer	4 to 13 ft	dawn & dusk	Break off the point (6 ft)	Bucktail, Weedless spoon over cabbage
Fall	4 to 13 ft	midday & dawn	Break off the point (6 ft)	Big rubber (Bull Dawg style), Husky-style jerkbait
Winter	4 to 13 ft	midday	Shallow bay flat (3 ft)	Tip-ups, Large jigging spoon

Notable structure

Count 6 structure marks on this chart. The deepest, Deep basin, sits near 11 ft.

Deep basin: deep basin, around 11 ft
Main-lake point: point, around 8 ft
Secondary point: point, around 8 ft
Break off the point: drop-off, around 6 ft
Shallow bay flat: weed flat, around 3 ft
Back-bay flat: weed flat, around 3 ft

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

Check the official Ontario fishing regulations →

Common questions

How deep is Dexter Lake?

Dexter Lake is about 13 ft (4 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 Dexter Lake?

Anglers target northern pike on Dexter Lake.

Where is the best fishing spot on Dexter Lake?

Shallow bay flat is the top-rated area: a weed flat in about 3 ft of water that rates prime for northern pike in spring. The map above holds the full rated-spot list for every species and season.

When is the best time to fish Dexter Lake?

For northern pike, 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 Dexter Lake?

Fishing on Dexter 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

Luke Lake 1 mi · Moray Lake 2 mi · Redwing Lake 2 mi · Hutt L. 4 2 mi · Hutt L. 2 3 mi · Wellington Lake 3 mi · Canoeshed Lake 3 mi · Austen Lake 4 mi · Hutt L. 11 4 mi · Montrose Lake 2 4 mi · English Lake 4 mi · Kitchiming Lake 4 mi

See how Dexter Lake stacks up: best northern pike lakes in Ontario

More water nearby: Sudbury District fishing maps (868 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.