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Shared by DepthScout anglers. Exact spots stay private, always.
470-acre lake in Sudbury District, Ontario. The lake tops out around 27 ft. Contours on this water are modeled from its actual shoreline and max depth. Good for finding likely water, never for navigation. The season-by-season read for each species follows, from the map's own numbers.
The drawn water covers 473 acres wrapped in 7.1 miles of bank, with a single island in the mix. A development index of 2.3 means a maze of bays and points: far more casting targets than a round bowl of the same size. Roughly 70% of the water is 15 ft or less as modeled, the band where the food chain lives. Figure 2 mi of water from one end to the other, 1 mi at the beam. Sudbury District claims this one. Piano Lake sits 3 mi northeast — the closest neighbouring chart.
Start shallow in spring: lake whitefish sit in 8 to 27 ft that time of year. They don't go far with the seasons — 8 to 27 ft covers summer, 8 to 27 ft covers winter. Top water on the chart: Deep basin, a deep basin in the 23 ft range, prime in summer. Fish it in early morning and you'll meet the bite. Throw a blade bait vertical or a small jigging spoon until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 27 ft | midday & dawn | Break off the point (12 ft) | Small jig + waxworm, Blade bait (small) |
| Summer | 8 to 27 ft | dawn | Deep basin (23 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 7 to 27 ft | dusk | Break off the point (12 ft) | Small spoon (gold), Jig + plastic larva |
| Winter | 8 to 27 ft | midday & dawn | Deep basin (23 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
When the water first warms, northern pike slide up into 2 to 8 ft. By summer they slide out to 8 to 20 ft, and by winter most fish are in 5 to 15 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 3 ft that scores prime in spring. In summer the feeding windows fall in early morning and the evening. Keep a bucktail or a weedless spoon over cabbage rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (3 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Break off the point (12 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Break off the point (12 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Shallow bay flat (3 ft) | Tip-ups, Large jigging spoon |
Alton Lake carries 6 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 23 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 Alton Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Alton Lake is about 27 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 lake whitefish, northern pike on Alton Lake.
Deep basin is the top-rated area: a deep basin in about 23 ft of water that rates prime for lake whitefish in summer. The interactive chart above rates every spot for each 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 Alton 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.
Piano Lake 3 mi · Jasper Lake 4 mi · Squirrel Lake 5 mi · Doubtful Lake 5 mi · Mackie Lake 6 mi · Mozhabong Lake 6 mi · Hider Lake 6 mi · Little Pogamasing Lake 7 mi · Tasker Lake 7 mi · Mishap Lake 7 mi · Lebell Lake 7 mi · Little Dennie Lake 8 mi
See how Alton Lake stacks up: best northern pike lakes in Ontario · best lake whitefish lakes in Ontario
More water nearby: Sudbury District fishing maps (868 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.