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Rating depth structure for rainbow trout.
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13-acre lake in Cowichan Valley Regional District, British Columbia. The lake tops out around 18 ft. Contours on this water are modeled from its actual shoreline and max depth. Good for finding likely water, never for navigation. Every species below gets its seasonal read from the same numbers driving the chart.
Tadjiss Lake maps at 13 acres behind 0.9 miles of shoreline. With a 1.8 development index there's bank structure worth casting at, in moderation. The shallow band under 15 ft claims about 90% of the surface on the model — that's where the groceries are. End to end it runs roughly 0.3 mi, about 0.2 mi across. Cowichan Valley Regional District claims this one. Wild Deer Lake sits 3 mi southeast — the closest neighbouring chart.
In spring, brown trout run shallow here, mostly 2 to 18 ft. Summer keeps them at 5 to 18 ft, and they winter in 3 to 18 ft. Break off the point is the standout, a drop-off at roughly 8 ft, rated prime for summer brown trout. Time it for after dark and early morning. You won't need more than a spoon at the thermocline or a deep stickbait (night) most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 18 ft | dawn & dusk | Main-lake point (8 ft) | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Summer | 5 to 18 ft | night & dawn | Break off the point (8 ft) | Spoon at the thermocline, Deep stickbait (night) |
| Fall | 3 to 18 ft | dusk & dawn | Main-lake point (8 ft) | Jerkbait over gravel, Casting spoon |
| Winter | 3 to 18 ft | dawn | Break off the point (8 ft) | Jigging spoon, Small stickbait (slow) |
In spring, cutthroat trout run shallow here, mostly 3 to 15 ft. Summer pushes them deeper, 5 to 18 ft, and winter fish settle into 5 to 18 ft. Break off the point is the standout, a drop-off at roughly 8 ft, rated prime for summer cutthroat trout. Time it for early morning and the evening. You won't need more than a trolled spoon (small) or an inline spinner most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 15 ft | dawn & dusk | Main-lake point (8 ft) | Inline spinner (silver/gold), Small spoon |
| Summer | 5 to 18 ft | dawn & dusk | Break off the point (8 ft) | Trolled spoon (small), Inline spinner |
| Fall | 4 to 18 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Inline spinner |
| Winter | 5 to 18 ft | dawn | Break off the point (8 ft) | Small jigging spoon, Marabou jig |
Spring rainbow trout on Tadjiss Lake hold shallow, usually 5 to 18 ft. Depth-wise the year is flat: 5 to 18 ft in summer, 4 to 18 ft once it turns cold. Put Break off the point first on the milk run — a drop-off near 8 ft that grades prime for winter. The feeding windows run early morning and the evening. The summer box starts with a dodger + spoon (deep troll) or a flutter spoon.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 18 ft | dawn & dusk | Main-lake point (8 ft) | Inline spinner (silver), Small spoon |
| Summer | 5 to 18 ft | dawn & dusk | Break off the point (8 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 5 to 18 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 4 to 18 ft | dawn | Break off the point (8 ft) | Jigging spoon, Tube jig (white) |
Structure-wise the chart holds 3 features, led in depth by Deep basin at roughly 15 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 Tadjiss Lake specifically, so confirm the current rules before you fish.
Check the official British Columbia fishing regulations →
Tadjiss Lake is about 18 ft (5 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 brown trout, cutthroat trout, rainbow trout on Tadjiss Lake.
Break off the point is the top-rated area: a drop-off in about 8 ft of water that rates prime for cutthroat trout in summer. The map above holds the full rated-spot list for every species and season.
For brown trout, the summer bite is best in after dark and 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 Tadjiss 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.
Wild Deer Lake 3 mi · Lois Lake 4 mi · Keating Lake 5 mi · Weeks Lake 8 mi · Jarvis Lake 9 mi · Mayo Lake 9 mi · Somenos Lake 10 mi · Shawnigan Lake 11 mi · Dougan Lake 12 mi · Grant Lake 12 mi · Quamichan Lake 12 mi · Kwassin Lake 12 mi
See how Tadjiss Lake stacks up: best rainbow trout lakes in British Columbia · best brown trout lakes in British Columbia · best cutthroat trout lakes in British Columbia
More water nearby: Cowichan Valley Regional District fishing maps (30 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.