Sign inSign up free Sign inSign up free Sign inSign up freeShared by DepthScout anglers. Exact spots stay private, always.
36-acre lake in Algoma District, Ontario. The lake tops out around 20 ft. The depth data here comes from the Ontario MNRF survey of 1967, a decades-old survey (a transect sounding survey). What follows comes from the same scoring engine that paints the spots above.
Rainbow Lake maps at 36 acres behind 2.2 miles of shoreline, broken up by an island. A development index of 2.6 means a maze of bays and points: far more casting targets than a round bowl of the same size. About 49% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Call it 0.9 mi long. It sits in Algoma District. Prospect Lake sits 1 mi northeast — the closest neighbouring chart.
Come spring, look for rainbow trout tight to the bank in 5 to 20 ft. Through summer count on 5 to 20 ft; the winter hold is 4 to 20 ft. Start at Break off the point. It's a drop-off holding about 20 ft of water and rates prime come winter. Prime time lands in 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 (12 ft) | Inline spinner (silver), Small spoon |
| Summer | 5 to 20 ft | dawn & dusk | Break off the point (20 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 6 to 20 ft | dawn & dusk | Main-lake point (12 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 4 to 20 ft | dawn | Break off the point (20 ft) | Jigging spoon, Tube jig (white) |
Rainbow Lake carries 5 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 20 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 Rainbow Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Rainbow Lake is about 20 ft (6 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1967, a decades-old survey (a transect sounding survey).
Anglers target rainbow trout on Rainbow Lake.
Break off the point is the top-rated area: a drop-off in about 20 ft of water that rates prime for rainbow trout in winter. Scroll up to the map for the complete spot list by 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 Rainbow 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.
Prospect Lake 1 mi · Byrnes Lake 1 mi · Loon Lake 1 mi · Bailey Lake 2 mi · Shaw Dam Lake 3 mi · Birch Lake 4 mi · Long Lake 4 mi · Cranberry Lake 4 mi · Shellrock Lake 5 mi · Burrows Lake 5 mi · Wanamaker Lake 5 mi · Brownlee Lake 6 mi
See how Rainbow Lake stacks up: best rainbow trout lakes in Ontario
More water nearby: Algoma District fishing maps (1026 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.