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4,321-acre lake in Thunder Bay District, Ontario. The lake tops out around 55 ft. Contours on this water are modeled from its actual shoreline and max depth. Good for finding likely water, never for navigation. The rest of this page walks each species through its year, using the map's own scoring.
The outline encloses 4,321 acres, worked by 44.5 miles of shoreline, with 6 islands in the mix. An index of 4.8 puts the bank firmly in maze territory: point after pocket after cove, every one a casting target. The shallow band under 15 ft claims about 63% of the surface on the model — that's where the groceries are. End to end it runs roughly 6 mi, about 3.4 mi across. Thunder Bay District claims this one. If the bite dies, Dumbbell Lake is 2 mi to the south.
The spring pattern is a shallow one: lake whitefish in 15 to 45 ft. Midsummer fish sit out in 17 to 55 ft before dropping to 17 to 55 ft for winter. The spot to know is Deep basin, a deep basin in about 47 ft of water that rates prime for lake whitefish in summer. Plan around early morning in the warm months. Summer baits: a blade bait vertical or a small jigging spoon 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 | 15 to 45 ft | midday & dawn | Break off the point (25 ft) | Small jig + waxworm, Blade bait (small) |
| Summer | 17 to 55 ft chart-limited; documented 40 to 90 ft | dawn | Deep basin (47 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 8 to 30 ft | dusk | Rock reef (7 ft) | Small spoon (gold), Jig + plastic larva |
| Winter | 17 to 55 ft chart-limited; documented 25 to 70 ft | midday & dawn | Deep basin (47 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
Come spring, look for northern pike tight to the bank in 2 to 8 ft. Expect a summer slide to 8 to 20 ft, then a winter hold in 5 to 15 ft. Start at Shallow bay flat. It's a weed flat holding about 6 ft of water and rates prime come spring. Prime time lands in early morning and the evening. A bucktail or a weedless spoon over cabbage is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (6 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Shallow bay flat (6 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Shallow bay flat (6 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Shallow bay flat (6 ft) | Tip-ups, Large jigging spoon |
Structure-wise the chart holds 12 features, led in depth by Deep basin at roughly 47 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 Fleming Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Fleming Lake is about 55 ft (17 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 lake whitefish, northern pike on Fleming Lake.
Deep basin is the top-rated area: a deep basin in about 47 ft of water that rates prime for lake whitefish in summer. The map above holds the full rated-spot list for every species and season.
For lake whitefish, the summer bite is best in 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 Fleming 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.
Dumbbell Lake 2 mi · Springwater Lake 4 mi · Ansig Lake 6 mi · Mollison Lake 8 mi · Clover Lake 8 mi · Cavell Lake 9 mi · Greta Lake 10 mi · Isobel Lake 13 mi · Bankfield Lake 14 mi · Lyons Lake 15 mi · Upper Twin Lake 15 mi · Cordingley Lake 15 mi
See how Fleming Lake stacks up: best northern pike lakes in Ontario · best lake whitefish lakes in Ontario
More water nearby: Thunder Bay District fishing maps (662 charts). Browse all Ontario fishing maps. 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.