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Rating depth structure for rainbow trout.
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10-acre lake in Nanaimo Regional District, British Columbia. The lake tops out around 20 ft. Contours on this water are modeled from its actual shoreline and max depth. Good for finding likely water, never for navigation. Here is how the season plays out for each species, straight from the data behind the map.
The drawn water covers 10 acres wrapped in 0.6 miles of bank. The basin is a simple one (shoreline index 1.4) — close to a bowl, so the structure on the chart matters more than the bank. About 86% of the surface sits shallower than 15 ft on the modeled chart — that's the weed-and-bait zone. Nanaimo Regional District claims this one. If the bite dies, Cottle Lake is 2 mi to the north.
In spring, cutthroat trout run shallow here, mostly 3 to 15 ft. Summer pushes them deeper, 6 to 20 ft, and winter fish settle into 5 to 20 ft. Break off the point is the standout, a drop-off at roughly 9 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 | 6 to 20 ft | dawn & dusk | Break off the point (9 ft) | Trolled spoon (small), Inline spinner |
| Fall | 4 to 20 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Inline spinner |
| Winter | 5 to 20 ft | dawn | Break off the point (9 ft) | Small jigging spoon, Marabou jig |
Spring rainbow trout on Blackjack Lake hold shallow, usually 5 to 20 ft. Depth-wise the year is flat: 5 to 20 ft in summer, 4 to 20 ft once it turns cold. Put Break off the point first on the milk run — a drop-off near 9 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 20 ft | dawn & dusk | Main-lake point (8 ft) | Inline spinner (silver), Small spoon |
| Summer | 5 to 20 ft | dawn & dusk | Break off the point (9 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 6 to 20 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 4 to 20 ft | dawn | Break off the point (9 ft) | Jigging spoon, Tube jig (white) |
The chart marks 3 structure features on Blackjack Lake; the deepest is Deep basin at about 17 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 Blackjack Lake specifically, so confirm the current rules before you fish.
Check the official British Columbia fishing regulations →
Blackjack Lake is about 20 ft (6 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 cutthroat trout, rainbow trout on Blackjack Lake.
Break off the point is the top-rated area: a drop-off in about 9 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 cutthroat 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 Blackjack 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.
Cottle Lake 2 mi · Boomerang Lake 2 mi · Nanaimo Lakes 4 mi · Round Lake 4 mi · Kidney Lake 4 mi · Lucid Lake 5 mi · Barsby Lake 6 mi · Rhododendron Lake 6 mi · Brannen Lake 7 mi · Healy Lake 7 mi · Green Lake 7 mi · Westwood Lake 7 mi
See how Blackjack Lake stacks up: best rainbow trout lakes in British Columbia · best cutthroat trout lakes in British Columbia
More water nearby: Nanaimo Regional District fishing maps (33 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.