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Rating depth structure for lake trout.
Recent public catches load as you reach this section.
135-acre lake in Algoma District, Ontario. The lake tops out around 66 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 1982 (a transect sounding survey). The season-by-season read for each species follows, from the map's own numbers.
Traced from the shoreline, Rochester Lake runs 135 acres with 5.8 miles of edge, with 2 islands in the mix. An index of 3.6 puts the bank firmly in maze territory: point after pocket after cove, every one a casting target. Littoral water — the productive band under ~15 ft — makes up 42% of this chart. Tip to tip the water measures near 2 mi with a 0.4-mi widest point. You'll find it in Algoma District. For a second option, Potbelly L. lies 1 mi southwest.
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.
In spring, lake trout run shallow here, mostly 10 to 40 ft. Midsummer fish sit out in 20 to 66 ft before dropping to 17 to 66 ft for winter. Summer lake trout concentrate at Deep basin, a prime-rated deep basin around 65 ft. Fish it in early morning and you'll meet the bite. You won't need more than a white tube jig (deep) or a magnum spoon on downrigger most summer days.
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 (14 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 20 to 66 ft chart-limited; documented 50 to 120 ft | dawn | Deep basin (65 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Secondary point (14 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 17 to 66 ft chart-limited; documented 20 to 80 ft | dawn | Deep basin (65 ft) | White tube jig, Airplane jig |
In spring, burbot run shallow here, mostly 20 to 66 ft. Summer keeps them at 20 to 66 ft, and they winter in 15 to 60 ft. Spring burbot concentrate at Deep basin, a prime-rated deep basin around 65 ft. Fish it in after dark and midday and you'll meet the bite. You won't need more than a heavy jig + cut bait most summer days.
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 | 20 to 66 ft chart-limited; documented 25 to 70 ft | night & dusk | Deep basin (65 ft) | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 20 to 66 ft chart-limited; documented 50 to 120 ft | night & midday | Deep basin (65 ft) | Heavy jig + cut bait |
| Fall | 20 to 66 ft chart-limited; documented 30 to 80 ft | night & dusk | Deep basin (65 ft) | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 15 to 60 ft | night & dusk | Deep basin (65 ft) | Glow tungsten + cut bait, Rattle spoon + minnow head |
The chart marks 6 structure features on Rochester Lake; the deepest is Deep basin at about 65 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 Rochester Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Rochester Lake is about 66 ft (20 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1982 (a transect sounding survey).
Anglers target lake trout, burbot on Rochester Lake.
Deep basin is the top-rated area: a deep basin in about 65 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 Rochester 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.
Potbelly L. 1 mi · Lucus Lake 1 mi · Uranium Lake 2 mi · Teasdale Lake 3 mi · Harry Lake 4 mi · Ouellette Lake 4 mi · Nina Lake 4 mi · Duthorne Lake 4 mi · Little Quirke Lake 4 mi · Quirke Lake 4 mi · Alexander Lake 5 mi · Deschamp Lake 5 mi
See how Rochester Lake stacks up: best lake trout lakes in Ontario · best burbot 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.