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126-acre lake in Thunder Bay District, Ontario. The lake tops out around 11 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. Here's the year, species by species, as the scoring engine sees it.
On the chart, Big Pearl Lake draws 127 acres inside 2.6 miles of shoreline. The shoreline is moderately structured (index 1.6) — enough points and pockets to pattern. Every acre of it sits shallower than ~15 ft: one big littoral zone, cover and forage throughout. Figure 0.9 mi of water from one end to the other, 0.3 mi at the beam. You'll find it in Thunder Bay District. The nearest mapped water is Sward Lake, 1 mi to the west.
The spring pattern is a shallow one: northern pike in 2 to 8 ft. Midsummer fish sit out in 3 to 11 ft before dropping to 3 to 11 ft for winter. The spot to know is Shallow bay flat, a weed flat in about 1 ft of water that rates prime for northern pike in spring. Plan around early morning and the evening in the warm months. Summer baits: a bucktail or a weedless spoon over cabbage gets it done.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| 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 | 3 to 11 ft chart-limited; documented 8 to 20 ft | dawn & dusk | Break off the point (2 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 3 to 11 ft chart-limited; documented 6 to 18 ft | midday & dawn | Break off the point (2 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 3 to 11 ft chart-limited; documented 5 to 15 ft | midday | Shallow bay flat (1 ft) | Tip-ups, Large jigging spoon |
The spring pattern is a shallow one: smallmouth bass in 3 to 11 ft. The depth story barely changes: 3 to 11 ft through summer, 3 to 11 ft in winter. The spot to know is Secondary point, a point in about 2 ft of water that rates prime for smallmouth bass in fall. Plan around early morning and the evening in the warm months. Summer baits: a drop shot (goby/minnow) or a ned rig gets it done.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 11 ft chart-limited; documented 3 to 12 ft | dawn & dusk | Secondary point (2 ft) | Ned rig, Tube jig |
| Summer | 3 to 11 ft chart-limited; documented 10 to 30 ft | dawn & dusk | Break off the point (2 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 3 to 11 ft chart-limited; documented 8 to 25 ft | midday & dawn | Secondary point (2 ft) | Jerkbait, Blade bait |
| Winter | 3 to 11 ft chart-limited; documented 20 to 45 ft | midday | Break off the point (2 ft) | Blade bait, Hair jig |
Structure-wise the chart holds 6 features, led in depth by Deep basin at roughly 6 ft.
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 Big Pearl Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Big Pearl Lake is about 11 ft (3 m) deep at its deepest point. 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.
Anglers target northern pike, smallmouth bass on Big Pearl Lake.
Shallow bay flat is the top-rated area: a weed flat in about 1 ft of water that rates prime for northern pike in spring. Open the map above to see every rated spot for each species and season.
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.
Fishing on Big Pearl 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.
Sward Lake 1 mi · Elbow Lake 3 mi · Hilma Lake 3 mi · Upper Hunters Lake 4 mi · Lost Lake 4 mi · Hunters Lakes 4 mi · Silver Lake 4 mi · Bisect Lake 5 mi · Wideman Lake 5 mi · MacIntosh Lake 5 mi · Long Lake 5 mi · Deception Lake 5 mi
See how Big Pearl Lake stacks up: best smallmouth bass lakes in Ontario · 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.