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Rating depth structure for lake trout.
Recent public catches load as you reach this section.
58-acre lake in Sudbury District, Ontario. The lake tops out around 80 ft. The depth chart comes from Ontario Ministry of Natural Resources and Forestry bathymetric survey data, so the contours are survey-derived rather than computer-modeled. The depth data here comes from a transect sounding survey by the Ontario MNRF. Below is the species-by-species picture, pulled from the same data the map uses.
The outline encloses 59 acres, worked by 1.5 miles of shoreline. Nearly circular (index 1.4), so the story is the bottom, not the bank. The shallow band under 15 ft claims about 10% of the surface — that's where the groceries are. Figure 0.6 mi of water from one end to the other, 0.2 mi at the beam. It sits in Sudbury District. If the bite dies, Acid Lake is 1 mi to the northwest.
These fish are listed in an exact-water agency record as forage or ecological context. They are not target-species profiles and do not affect DepthScout's Prime, Good, or Fair spot ratings.
Official Ontario MNRF Fish ON-Line record. The listing documents source-recorded presence, not present abundance or guaranteed catchability.
Early season lake trout use the shallows, holding in 10 to 40 ft. Expect a summer slide to 24 to 80 ft, then a winter hold in 20 to 80 ft. Put Deep basin first on the milk run — a deep basin near 80 ft that grades prime for summer. In summer the feeding windows fall in early morning. Tie on a white tube jig (deep) or a magnum spoon on downrigger and you're in the game.
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 | 10 to 40 ft | dawn & dusk | Secondary point (25 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 24 to 80 ft chart-limited; documented 50 to 120 ft | dawn | Deep basin (80 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Main-lake point (42 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 20 to 80 ft | dawn | Deep basin (80 ft) | White tube jig, Airplane jig |
Start shallow in spring: pink salmon sit in 8 to 60 ft that time of year. Warm water sends them out to 3 to 70 ft; cold water stacks them in 18 to 80 ft. Top water on the chart: Deep basin, a deep basin in the 80 ft range, prime in winter. Fish it in early morning and the evening and you'll meet the bite. Throw a pink or orange casting spoon or a small hoochie until the fish tell you otherwise.
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 | 8 to 60 ft | dawn & dusk | Break off the point (53 ft) | Small chrome spoon, Compact herring-pattern jig |
| Summer | 3 to 70 ft | dawn & dusk | Main-lake point (42 ft) | Pink or orange casting spoon, Small hoochie |
| Fall | 2 to 60 ft | dawn & dusk | Main-lake point (42 ft) | Small bright spoon, Pink jig |
| Winter | 18 to 80 ft chart-limited; documented 20 to 90 ft | midday | Deep basin (80 ft) | Small vertical jig |
The chart marks 6 structure features on Lumsden Lake; the deepest is Deep basin at about 80 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 Lumsden Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Lumsden Lake is about 80 ft (24 m) deep at its deepest point. The depth data here comes from a transect sounding survey by the Ontario MNRF.
Anglers target lake trout, pink salmon on Lumsden Lake.
Deep basin is the top-rated area: a deep basin in about 80 ft of water that rates prime for lake trout in summer. Every other rated spot, per species and season, is on the map above.
For lake trout, 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 Lumsden 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.
Acid Lake 1 mi · A.Y. Jackson Lake 2 mi · Teardrop Lake 2 mi · George Lake 2 mi · Muriel Lake 2 mi · Cave Lake 2 mi · Burke Lake 2 mi · O.S.A. Lake 2 mi · Cranberry Bog 3 mi · Freeland Lake 3 mi · The Three Lakes 4 mi · Killarney Lake 5 mi
See how Lumsden Lake stacks up: best lake trout lakes in Ontario
More water nearby: Sudbury District fishing maps (868 charts). Browse all Ontario fishing maps. See every water on DepthScout. Bathymetry: published agency survey data. 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.