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Rating depth structure for cisco (lake herring).
Shared by DepthScout anglers. Exact spots stay private, always.
30-acre lake in Sudbury District, Ontario. The lake tops out around 48 ft. Depth here is modeled from the true shoreline and max depth rather than surveyed; use it to plan, not to navigate. What follows comes from the same scoring engine that paints the spots above.
Neumann Lake maps at 30 acres behind 1.2 miles of shoreline. A middling shoreline index (1.5) gives it some bays to work without being a maze. Roughly 38% of the water is 15 ft or less as modeled, the band where the food chain lives. Call it 0.4 mi long by 0.2 mi wide at the broadest reach. It sits in Sudbury District. Streich Lake sits 1 mi northeast — the closest neighbouring chart.
Early season splake use the shallows, holding in 5 to 25 ft. Expect a summer slide to 14 to 48 ft, then a winter hold in 10 to 45 ft. Put Break off the point first on the milk run — a drop-off near 22 ft that grades prime for summer. In summer the feeding windows fall in early morning and the evening. Tie on a trolled spoon at the thermocline or a white tube jig (deep) and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | dawn & dusk | Main-lake point (12 ft) | Small casting spoon (gold/orange), Inline spinner |
| Summer | 14 to 48 ft | dawn & dusk | Break off the point (22 ft) | Trolled spoon at the thermocline, White tube jig (deep) |
| Fall | 10 to 35 ft | dawn & dusk | Main-lake point (12 ft) | Casting spoon, Jerkbait |
| Winter | 10 to 45 ft | dawn | Break off the point (22 ft) | Jigging spoon tipped with minnow head, Small white tube |
In spring, cisco (lake herring) run shallow here, mostly 10 to 40 ft. Summer pushes them deeper, 14 to 48 ft, and winter fish settle into 14 to 48 ft. Deep basin is the standout, a deep basin at roughly 41 ft, rated prime for summer cisco (lake herring). Time it for early morning. You won't need more than a vertical flutter spoon (small) or a drop-shot micro plastic most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Deep basin (41 ft) | Small silver spoon, Tiny swim jig (white) |
| Summer | 14 to 48 ft | dawn | Deep basin (41 ft) | Vertical flutter spoon (small), Drop-shot micro plastic |
| Fall | 5 to 25 ft | dusk & dawn | Break off the point (22 ft) | Small casting spoon, Inline spinner (silver) |
| Winter | 14 to 48 ft | dawn | Deep basin (41 ft) | Small jigging spoon (glow/silver), Tungsten jig + minnow head |
Neumann Lake carries 4 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 41 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 Neumann Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Neumann Lake is about 48 ft (15 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 splake, cisco (lake herring) on Neumann Lake.
Break off the point is the top-rated area: a drop-off in about 22 ft of water that rates prime for splake in summer. The interactive chart above rates every spot for each species and season.
For splake, 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 Neumann 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.
Streich Lake 1 mi · May Lake 2 mi · Savage Lake 3 mi · Gough L. 5 3 mi · Tiplady Lake 3 mi · Stalker Lake 4 mi · Boundary Lake 4 mi · Birch Lake 6 mi · Moyle Lake 6 mi · McLander Lake 7 mi · Kerr Lake 7 mi · Maville Lake 7 mi
See how Neumann Lake stacks up: best cisco (lake herring) lakes in Ontario · best splake 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.