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120,553-acre lake near Sioux Lookout. The lake tops out around 80 ft. The depth chart is built from real state fisheries GPS surveys, so the humps, channels and drop-offs you see are measured, not guessed. Below is the species-by-species picture, pulled from the same data the map uses.
Traced from the shoreline, Lake St. Joseph runs 124,030 acres with 1041.2 miles of edge, with 701 islands in the mix. That shoreline is heavily fingered (development index 21.1) — bays, points and pockets everywhere, which multiplies the fishable edge. Roughly 66% of the water is 15 ft or less, the band where the food chain lives. The basin spans about 56.7 mi end to end and 16.9 mi across at its widest. The water lies in Kenora District. For a second option, Lake St. Joseph lies 0 mi south.
Spring walleye on Lake St. Joseph hold shallow, usually 4 to 15 ft. They move out to 15 to 35 ft in summer and finish the year down in 20 to 40 ft. Put Creek inflow first on the milk run — an inflow / creek mouth near 8 ft that grades prime for spring. The feeding windows run the evening and early morning. The summer box starts with a crawler harness on bottom bouncer or a deep crankbait (trolled).
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | Creek inflow (8 ft) | 1/8 oz jig + minnow, Hair jig |
| Summer | 15 to 35 ft | dusk & dawn | Sharp break (26 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 12 to 40 ft | dusk & night | Sharp break (26 ft) | Jigging rap, Jig + big minnow |
| Winter | 20 to 40 ft | dusk & dawn | Sharp break (26 ft) | Jigging spoon + minnow head, Rattle bait |
In spring, northern pike run shallow here, mostly 2 to 8 ft. Summer pushes them deeper, 8 to 20 ft, and winter fish settle into 5 to 15 ft. Shallow bay flat is the standout, a weed flat at roughly 2 ft, rated prime for spring northern pike. Time it for early morning and the evening. 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 (2 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Weed flat (8 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Break off the point (7 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Weed flat (8 ft) | Tip-ups, Large jigging spoon |
Lake St. Joseph carries 37 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 56 ft down.
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 Lake St. Joseph specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Lake St. Joseph is about 80 ft (24 m) deep at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
Anglers target walleye, northern pike on Lake St. Joseph.
Creek inflow is the top-rated area: an inflow / creek mouth in about 8 ft of water that rates prime for walleye in spring. Scroll up to the map for the complete spot list by species and season.
For walleye, the summer bite is best in the evening and early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Lake St. Joseph 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.
Lake St. Joseph 0 mi · Carpenter Lake 11 mi · Bertaud Lake 12 mi · Medcalf Lake 15 mi · Miniss Lake 17 mi · Blackstone Lake 19 mi · Austin Lake 22 mi · Pashkokogan Lake 24 mi · Minchin Lake 24 mi · Churchill Lake 24 mi · Obaskaka Lake 24 mi · East Pashkokogan Lake 27 mi
See how Lake St. Joseph stacks up: best walleye lakes in Ontario · best northern pike lakes in Ontario
More water nearby: Kenora District fishing maps (1173 charts). Browse all Ontario fishing maps or see every water on DepthScout. Bathymetry credit: state fisheries survey programs. 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.