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Rating depth structure for rainbow trout.
Shared by DepthScout anglers. Exact spots stay private, always.
111-acre lake in Nipissing District, Ontario. The lake tops out around 80 ft. This chart interpolates between a real shoreline and a known maximum depth. It will point you at likely water, but it is not a navigation product. Species by species, here's what the data says the year looks like.
Langevin Lake maps at 111 acres behind 2.4 miles of shoreline. A middling shoreline index (1.6) gives it some bays to work without being a maze. About 39% of the surface sits shallower than 15 ft on the modeled chart — that's the weed-and-bait zone. The basin spans about 1 mi end to end and 0.3 mi across at its widest. Nipissing District claims this one. If the bite dies, Tremblay Lake is 5 mi to the south.
Come spring, look for rainbow trout tight to the bank in 5 to 20 ft. They move out to 8 to 30 ft in summer and finish the year down in 8 to 40 ft. If you only fish one area, make it Break off the point: a drop-off around 36 ft that scores prime in winter. Best bite is early morning and the evening. A dodger + spoon (deep troll) or a flutter spoon is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Main-lake point (20 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Main-lake point (20 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Main-lake point (20 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Break off the point (36 ft) | Jigging spoon, Tube jig (white) |
Langevin Lake carries 6 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 68 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 Langevin Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Langevin Lake is about 80 ft (24 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 rainbow trout on Langevin Lake.
Break off the point is the top-rated area: a drop-off in about 36 ft of water that rates prime for rainbow trout in winter. Open the map above to see every rated spot for each species and season.
For rainbow trout, 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 Langevin 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.
Tremblay Lake 5 mi · Crocan Lake 6 mi · Campbell Lake 6 mi · Beaudry Lake 7 mi · Timber Lake 7 mi · Butler L. 697 7 mi · Butler Lake 7 mi · Blueberry L. 7 mi · Salter Lake 7 mi · Little Mountain Lake 8 mi · Mountain Lake 8 mi · Boot Lake 8 mi
See how Langevin Lake stacks up: best rainbow trout lakes in Ontario
More water nearby: Nipissing District fishing maps (683 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.