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Rating depth structure for rainbow trout.
Shared by DepthScout anglers. Exact spots stay private, always.
28,698-acre lake in British Columbia. The lake tops out around 337 ft. Depth here is modeled from the true shoreline and max depth rather than surveyed; use it to plan, not to navigate. The rest of this page walks each species through its year, using the map's own scoring.
The outline encloses 28,635 acres, worked by 66 miles of shoreline. With a shoreline index of 2.8, this water is all arms and coves — edge habitat well beyond its acreage. The shallow band under 15 ft claims about 3% of the surface on the model — that's where the groceries are. Figure 19.7 mi of water from one end to the other, 5.9 mi at the beam. Bulkley-Nechako Regional District claims this one. Its nearest charted neighbour, Mckelvey Lake, is 8 mi to the south.
Spring kokanee on Trembleur Lake hold shallow, usually 10 to 30 ft. They move out to 30 to 70 ft in summer and finish the year down in 20 to 80 ft. Put Offshore hump first on the milk run — an offshore hump near 32 ft that grades prime for summer. The feeding windows run early morning. The summer box starts with a dodger + pink/orange squid on downrigger or a kokanee bug + corn.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 30 ft | dawn | Offshore hump (25 ft) | Small dodger + squid (pink), Wedding-ring spinner + corn |
| Summer | 30 to 70 ft | dawn | Offshore hump (32 ft) | Dodger + pink/orange squid on downrigger, Kokanee bug + corn |
| Fall | 5 to 40 ft | dawn | open water | Dodger + squid (deeper red/purple), Small spoon |
| Winter | 20 to 80 ft | dawn | Offshore hump (32 ft) | Small glow jig + corn or maggot, Tiny spoon |
Come spring, look for lake trout tight to the bank in 10 to 40 ft. They move out to 50 to 120 ft in summer and finish the year down in 20 to 80 ft. If you only fish one area, make it Offshore hump: an offshore hump around 32 ft that scores prime in winter. Best bite is early morning. A white tube jig (deep) or a magnum spoon on downrigger is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Shoreline point (15 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 50 to 120 ft | dawn | Offshore hump (38 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Offshore hump (32 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 20 to 80 ft | dawn | Offshore hump (32 ft) | White tube jig, Airplane jig |
Early season rainbow trout use the shallows, holding in 5 to 20 ft. Summer is an 8 to 30 ft game here, winter an 8 to 40 ft one. The chart's best answer is Shoreline point — point, 15 ft, prime for spring. Best bite is early morning and the evening. Tie on a dodger + spoon (deep troll) or a flutter spoon and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Shoreline point (15 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Shoreline point (15 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Shoreline point (15 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | open water | Jigging spoon, Tube jig (white) |
The spring pattern is a shallow one: lake whitefish in 15 to 45 ft. Midsummer fish sit out in 40 to 90 ft before dropping to 25 to 70 ft for winter. The spot to know is Offshore hump, an offshore hump in about 32 ft of water that rates prime for lake whitefish in winter. Plan around early morning in the warm months. Summer baits: a blade bait vertical or a small jigging spoon gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 15 to 45 ft | midday & dawn | Offshore hump (32 ft) | Small jig + waxworm, Blade bait (small) |
| Summer | 40 to 90 ft | dawn | Offshore hump (38 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 8 to 30 ft | dusk | Offshore hump (25 ft) | Small spoon (gold), Jig + plastic larva |
| Winter | 25 to 70 ft | midday & dawn | Offshore hump (32 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
Structure-wise the chart holds 16 features, led in depth by Deep basin at roughly 286 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 Trembleur Lake specifically, so confirm the current rules before you fish.
Check the official British Columbia fishing regulations →
Trembleur Lake is about 337 ft (103 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 kokanee, lake trout, rainbow trout, lake whitefish on Trembleur Lake.
Offshore hump is the top-rated area: an offshore hump in about 32 ft of water that rates prime for lake trout in winter. Open the map above to see every rated spot for each species and season.
For kokanee, 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 Trembleur 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.
Mckelvey Lake 8 mi · Tarnezell Lake 10 mi · Natazutlo Lake 12 mi · Kazchek Lake 13 mi · Rubyrock Lake 13 mi · Fleming Lake 14 mi · Dan Miner Lake 16 mi · Cunningham Lake 16 mi · Kloch Lake 16 mi · Elliott Lake 17 mi · Whitefish Lake 19 mi · Klaytahnkut Lake 19 mi
See how Trembleur Lake stacks up: best rainbow trout lakes in British Columbia · best lake trout lakes in British Columbia · best kokanee lakes in British Columbia · best lake whitefish lakes in British Columbia
More water nearby: Bulkley-Nechako Regional District fishing maps (324 charts). Browse all British Columbia 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.