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Rating depth structure for lake trout.
Recent public catches load as you reach this section.
32-acre lake in Algoma District, Ontario. The lake tops out around 39 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 the Ontario MNRF survey of 1981 (a transect sounding survey). Below is the species-by-species picture, pulled from the same data the map uses.
Traced from the shoreline, Uppermost Lake runs 32 acres with 1.5 miles of edge, with a single island in the mix. The shoreline is moderately structured (index 1.9) — enough points and pockets to pattern. Littoral water — the productive band under ~15 ft — makes up 59% of this chart. Figure 0.3 mi of water from one end to the other, 0.3 mi at the beam. You'll find it in Algoma District. For a second option, Longhaul Lake lies 0 mi south.
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.
Spring puts lake trout in skinny water — 10 to 39 ft is the zone. Summer fish stay in 12 to 39 ft, and winter fish hold in 10 to 39 ft. Deep basin is the standout, a deep basin at roughly 36 ft, rated prime for summer lake trout. Plan around early morning in the warm months. A white tube jig (deep) or a magnum spoon on downrigger covers the summer program.
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 39 ft chart-limited; documented 10 to 40 ft | dawn & dusk | Break off the point (7 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 12 to 39 ft chart-limited; documented 50 to 120 ft | dawn | Deep basin (36 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 8 to 39 ft chart-limited; documented 10 to 50 ft | dusk & dawn | Main-lake point (4 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 10 to 39 ft chart-limited; documented 20 to 80 ft | dawn | Deep basin (36 ft) | White tube jig, Airplane jig |
The chart marks 4 structure features on Uppermost Lake; the deepest is Deep basin at about 36 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 Uppermost Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Uppermost Lake is about 39 ft (12 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1981 (a transect sounding survey).
Anglers target lake trout on Uppermost Lake.
Deep basin is the top-rated area: a deep basin in about 36 ft of water that rates prime for lake trout in summer. The map above holds the full rated-spot list for every species and season.
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 Uppermost 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.
Longhaul Lake 0 mi · Boland Lake 2 mi · Moccasin Lake 3 mi · Shoepack Lake 3 mi · Moonshine Lake 5 mi · Poupore Lake 5 mi · Little Touch L. 5 mi · Five Star Lake 6 mi · Frying Pan Lake 6 mi · Brown L. 6 mi · Navy Lake 6 mi · Lefebvre Lake 22 6 mi
See how Uppermost Lake stacks up: best lake trout lakes in Ontario
More water nearby: Algoma District fishing maps (1026 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.