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Shared by DepthScout anglers. Exact spots stay private, always.
31-acre lake in Algoma District, Ontario. The lake tops out around 26 ft. Bathymetry on this water is estimated from its real outline and maximum depth. Use it to shortlist water, then verify with your electronics — and never navigate by it. Below is the species-by-species picture, pulled from the same data the map uses.
St. Joe Lake maps at 31 acres behind 1.3 miles of shoreline. A middling shoreline index (1.7) gives it some bays to work without being a maze. Littoral water — the productive band under ~15 ft — makes up 59% of this chart, as modeled. End to end it runs roughly 0.5 mi, about 0.2 mi across. Algoma District claims this one. Crystal Lake sits 1 mi southwest — the closest neighbouring chart.
When the water first warms, brook trout slide up into 2 to 15 ft. Summer is an 8 to 26 ft game here, winter a 3 to 20 ft one. Start at Deep basin. It's a deep basin holding about 22 ft of water and rates prime come summer. The feeding windows run early morning and the evening. Keep a small spoon fished deep or a trolled lake-clear wobbler + worm rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (8 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 8 to 26 ft | dawn & dusk | Deep basin (22 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (8 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Break off the point (12 ft) | Small jigging spoon, Tungsten jig + plastic |
Spring puts rock bass in skinny water — 2 to 10 ft is the zone. Warm water sends them out to 5 to 20 ft; cold water stacks them in 8 to 26 ft. Main-lake point is the standout, a point at roughly 8 ft, rated prime for summer rock bass. Plan around the evening in the warm months. A ned rig (small) or a marabou jig covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | Main-lake point (8 ft) | 1/16 oz jig + grub, Small inline spinner |
| Summer | 5 to 20 ft | dusk | Main-lake point (8 ft) | Ned rig (small), Marabou jig |
| Fall | 8 to 22 ft | midday | Break off the point (12 ft) | Small tube jig, Inline spinner |
| Winter | 8 to 26 ft | midday | Deep basin (22 ft) | Tungsten jig + plastic, Small spoon + spike |
The chart marks 5 structure features on St. Joe Lake; the deepest is Deep basin at about 22 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 St. Joe Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
St. Joe Lake is about 26 ft (8 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.
Anglers target brook trout, rock bass on St. Joe Lake.
Main-lake point is the top-rated area: a point in about 8 ft of water that rates prime for rock bass in summer. The interactive chart above rates every spot for each species and season.
For brook trout, 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 St. Joe 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.
Crystal Lake 1 mi · Trout Lake 1 mi · Mabel Lake 2 mi · Syrette Lake 3 mi · Lake One 3 mi · Finn Lake 3 mi · Reserve Lake 3 mi · Fillion L. 3 mi · Redrock Lake 3 mi · Maki Lake 3 mi · Maud Lake 3 mi · Elizabeth Lake 4 mi
See how St. Joe Lake stacks up: best brook trout lakes in Ontario · best rock bass lakes in Ontario
More water nearby: Algoma District fishing maps (1026 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.