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257-acre lake in Thunder Bay District, Ontario. The lake tops out around 46 ft. The depth data here comes from the Ontario MNRF survey of 1981 (a transect sounding survey). Here's the year, species by species, as the scoring engine sees it.
Twinhouse Lake maps at 258 acres behind 6 miles of shoreline, broken up by 9 islands. With a shoreline index of 2.7, this water is all arms and coves — edge habitat well beyond its acreage. Littoral water — the productive band under ~15 ft — makes up 46% of this chart. Figure 1.3 mi of water from one end to the other, 0.7 mi at the beam. Thunder Bay District claims this one. Its nearest charted neighbour, Elevation Lake, is 2 mi to the southwest.
When the water first warms, lake trout slide up into 10 to 40 ft. Summer is a 14 to 46 ft game here, winter a 12 to 46 ft one. Start at Deep basin. It's a deep basin holding about 46 ft of water and rates prime come summer. The feeding windows run early morning. Keep a white tube jig (deep) or a magnum spoon on downrigger rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Break off the point (15 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 14 to 46 ft | dawn | Deep basin (46 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 9 to 46 ft | dusk & dawn | Break off the point (15 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 12 to 46 ft | dawn | Deep basin (46 ft) | White tube jig, Airplane jig |
The spring pattern is a shallow one: yellow perch in 3 to 12 ft. As the season builds they drop to 10 to 30 ft, wintering in 15 to 35 ft. Top water on the chart: Break off the point, a drop-off in the 15 ft range, prime in summer. Time it for early morning. Summer baits: a drop-shot micro plastics or a small spoon tipped with worm gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow bay flat (1 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Break off the point (15 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Break off the point (15 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | Break off the point (15 ft) | Tungsten jig + spikes, Rattle spoon (small) |
The chart marks 7 structure features on Twinhouse Lake; the deepest is Deep basin at about 46 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 Twinhouse Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Twinhouse Lake is about 46 ft (14 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, yellow perch on Twinhouse Lake.
Deep basin is the top-rated area: a deep basin in about 46 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 Twinhouse 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.
Elevation Lake 2 mi · Wye Lake 3 mi · Redfox Lake 4 mi · Ross Lake 4 mi · Greenwood Lake 5 mi · Mowe Lake 6 mi · Plummes Lake 6 mi · Powell Lake 6 mi · Clay Lake 7 mi · Whitefish Lake 8 mi · Myrt Lake 8 mi · Northern Light Lake 11 mi
See how Twinhouse Lake stacks up: best yellow perch lakes in Ontario · best lake trout lakes in Ontario
More water nearby: Thunder Bay District fishing maps (662 charts). Browse all Ontario fishing maps or see every water on DepthScout. Bathymetry credit: state fisheries survey programs. 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.