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Rating depth structure for rainbow trout.
Recent public catches load as you reach this section.
121-acre lake in East Kootenay Regional District, British Columbia. The lake tops out around 42 ft. The depth picture is modeled, anchored to the true shoreline and the water's published max depth — a scouting aid, never a chart to run a boat by. Here's the year, species by species, as the scoring engine sees it.
On the chart, Rosen Lake draws 121 acres inside 3.3 miles of shoreline. The shoreline is moderately structured (index 2.1) — enough points and pockets to pattern. Littoral water — the productive band under ~15 ft — makes up 62% of this chart, as modeled. The basin spans about 1 mi end to end and 0.4 mi across at its widest. You'll find it in East Kootenay Regional District. Closest neighbour on DepthScout: Tie Lake, 3 mi west of here.
Spring puts brook trout in skinny water — 2 to 15 ft is the zone. As the season builds they drop to 10 to 30 ft, wintering in 3 to 20 ft. Summer brook trout concentrate at Break off the point, a prime-rated drop-off around 19 ft. Warm-month bites cluster around early morning and the evening. A small spoon fished deep or a trolled lake-clear wobbler + worm covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (11 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (19 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (11 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Break off the point (19 ft) | Small jigging spoon, Tungsten jig + plastic |
When the water first warms, cutthroat trout slide up into 3 to 15 ft. By summer they slide out to 10 to 35 ft, and by winter most fish are in 10 to 40 ft. If you only fish one area, make it Break off the point: a drop-off around 19 ft that scores prime in summer. In summer the feeding windows fall in early morning and the evening. Keep a trolled spoon (small) or an inline spinner rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 15 ft | dawn & dusk | Main-lake point (11 ft) | Inline spinner (silver/gold), Small spoon |
| Summer | 10 to 35 ft | dawn & dusk | Break off the point (19 ft) | Trolled spoon (small), Inline spinner |
| Fall | 5 to 25 ft | dawn & dusk | Main-lake point (11 ft) | Casting spoon, Inline spinner |
| Winter | 10 to 40 ft | dawn | Break off the point (19 ft) | Small jigging spoon, Marabou jig |
Spring puts kokanee in skinny water — 10 to 30 ft is the zone. As the season builds they drop to 13 to 42 ft, wintering in 11 to 42 ft. Summer kokanee concentrate at Deep basin, a prime-rated deep basin around 36 ft. Warm-month bites cluster around early morning. A dodger + pink/orange squid on downrigger or a kokanee bug + corn 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 30 ft | dawn | Break off the point (19 ft) | Small dodger + squid (pink), Wedding-ring spinner + corn |
| Summer | 13 to 42 ft chart-limited; documented 30 to 70 ft | dawn | Deep basin (36 ft) | Dodger + pink/orange squid on downrigger, Kokanee bug + corn |
| Fall | 5 to 40 ft | dawn | Deep basin (36 ft) | Dodger + squid (deeper red/purple), Small spoon |
| Winter | 11 to 42 ft chart-limited; documented 20 to 80 ft | dawn | Deep basin (36 ft) | Small glow jig + corn or maggot, Tiny spoon |
In spring, lake trout run shallow here, mostly 10 to 40 ft. Midsummer fish sit out in 13 to 42 ft before dropping to 11 to 42 ft for winter. Summer lake trout concentrate at Deep basin, a prime-rated deep basin around 36 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 | Main-lake point (11 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 13 to 42 ft chart-limited; documented 50 to 120 ft | dawn | Deep basin (36 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 8 to 42 ft chart-limited; documented 10 to 50 ft | dusk & dawn | Main-lake point (11 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 11 to 42 ft chart-limited; documented 20 to 80 ft | dawn | Deep basin (36 ft) | White tube jig, Airplane jig |
In spring, rainbow trout run shallow here, mostly 5 to 20 ft. Summer pushes them deeper, 8 to 30 ft, and winter fish settle into 8 to 40 ft. Break off the point is the standout, a drop-off at roughly 19 ft, rated prime for winter rainbow trout. Time it for early morning and the evening. You won't need more than a dodger + spoon (deep troll) or a flutter spoon most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Main-lake point (11 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Break off the point (19 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Main-lake point (11 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Break off the point (19 ft) | Jigging spoon, Tube jig (white) |
When the water first warms, dolly varden slide up into 1 to 30 ft. Summer is a 2 to 40 ft game here, winter a 7 to 42 ft one. Start at Main-lake point. It's a point holding about 11 ft of water and rates prime come spring. The feeding windows run early morning and the evening. Keep a small chrome spoon or a baitfish streamer rigged through the warm months.
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 | 1 to 30 ft | dawn & midday | Main-lake point (11 ft) | Small silver spoon, Inline spinner |
| Summer | 2 to 40 ft | dawn & dusk | Main-lake point (11 ft) | Small chrome spoon, Baitfish streamer |
| Fall | 1 to 25 ft | dawn & dusk | Main-lake point (11 ft) | Small spinner, Egg or fry pattern |
| Winter | 7 to 42 ft chart-limited; documented 8 to 45 ft | midday | Break off the point (19 ft) | Small slow spoon, Weighted baitfish fly |
The chart marks 6 structure features on Rosen Lake; the deepest is Deep basin at about 36 ft.
Season dates, license requirements, and size and bag limits for British Columbia waters are set by the BC freshwater fishing synopsis — and special regulations can apply to Rosen Lake specifically, so confirm the current rules before you fish.
Check the official British Columbia fishing regulations →
Rosen Lake is about 42 ft (13 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 brook trout, cutthroat trout, kokanee, lake trout, rainbow trout, dolly varden on Rosen Lake.
Break off the point is the top-rated area: a drop-off in about 19 ft of water that rates prime for cutthroat trout in summer. Every other rated spot, per species and season, is on the map above.
For brook 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 Rosen Lake is regulated by the BC freshwater fishing synopsis. Check the official British Columbia regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Tie Lake 3 mi · North Star Lake 4 mi · Sand Lake 4 mi · Wapiti Lake 5 mi · Suzanne Lake 5 mi · Bronze Lake 7 mi · Blue Bottom Lake 9 mi · Lund Lake 9 mi · Silver Spring Lake 11 mi · Haha Lake 11 mi · Surveyors Lake 11 mi · Fussee Lake 12 mi
See how Rosen Lake stacks up: best rainbow trout lakes in British Columbia · best lake trout lakes in British Columbia · best brook trout lakes in British Columbia · best kokanee lakes in British Columbia
More water nearby: East Kootenay Regional District fishing maps (89 charts). Browse all British Columbia fishing maps. 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.