Baldwin Lake Depth Map & Fishing Spots (ON)

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Lake depth chart

Baldwin Lake, ON

Max 40 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 ~8 months

Recommendations come from depth structure and seasonal species behavior. Treat them as a starting point, not a guarantee. Contours here are generated from real agency depth surveys; use the survey badge for the provider, dataset, datum and measured coverage. Never use for navigation. Always check local regulations.

Depth · ft

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Recent catches at Baldwin Lake

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Fishing Baldwin Lake: what the data says

178-acre lake in Thunder Bay District, Ontario. The lake tops out around 40 ft. The depth chart comes from Ontario Ministry of Natural Resources and Forestry bathymetric survey data, so the contours are survey-derived rather than computer-modeled. The depth data here comes from the Ontario MNRF survey of 1974, a decades-old survey (an MNRF lake survey). Here's the year, species by species, as the scoring engine sees it.

Traced from the shoreline, Baldwin Lake runs 181 acres with 3.9 miles of edge. The shoreline is moderately structured (index 2) — enough points and pockets to pattern. Littoral water — the productive band under ~15 ft — makes up 71% of this chart. Tip to tip the water measures near 1.2 mi with a 0.7-mi widest point. You'll find it in Thunder Bay District. For a second option, Fitzpatrick Lake lies 1 mi north.

Northern Pike fishing at Baldwin Lake

Start shallow in spring: northern pike sit in 2 to 8 ft that time of year. Warm water sends them out to 8 to 20 ft; cold water stacks them in 5 to 15 ft. Top water on the chart: Break off the point, a drop-off in the 18 ft range, prime in fall. Fish it in early morning and the evening and you'll meet the bite. Throw a bucktail or a weedless spoon over cabbage until the fish tell you otherwise.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 8 ft	midday & dawn	Shallow bay flat (1 ft)	#5 inline spinner, Spoon (red/white)
Summer	8 to 20 ft	dawn & dusk	Break off the point (18 ft)	Bucktail, Weedless spoon over cabbage
Fall	6 to 18 ft	midday & dawn	Break off the point (18 ft)	Big rubber (Bull Dawg style), Husky-style jerkbait
Winter	5 to 15 ft	midday	Shallow feeding flat (14 ft)	Tip-ups, Large jigging spoon

Notable structure

7 pieces of structure are mapped here — Deep basin, around 40 ft, is the deepest of them.

Deep basin: deep basin, around 40 ft
Break off the point: drop-off, around 18 ft
Shallow feeding flat: feeding flat, around 14 ft
Secondary point: point, around 2 ft
Main-lake point: point, around 1 ft
Shallow bay flat: weed flat, around 1 ft
Back-bay flat: weed flat, around 1 ft

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

Check the official Ontario fishing regulations →

Common questions

How deep is Baldwin Lake?

Baldwin Lake is about 40 ft (12 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1974, a decades-old survey (an MNRF lake survey).

What fish are in Baldwin Lake?

Anglers target northern pike on Baldwin Lake.

Where is the best fishing spot on Baldwin Lake?

Break off the point is the top-rated area: a drop-off in about 18 ft of water that rates prime for northern pike in fall. Every other rated spot, per species and season, is on the map above.

When is the best time to fish Baldwin 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 Baldwin Lake?

Fishing on Baldwin 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

Fitzpatrick Lake 1 mi · Dickison Lake 3 mi · Teesquare Lake 3 mi · Flag Lake 4 mi · Professor Lake 6 mi · Roslyn Lake 8 mi · Flicker Lake 9 mi · Felix Lake 10 mi · Chapman Lake 11 mi · Wig Lake 11 mi · Baton Lake 12 mi · Wintering Lake 14 mi

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

More water nearby: Thunder Bay District fishing maps (662 charts). Browse all Ontario fishing maps. See every water on DepthScout. Bathymetry: published agency survey data. 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.