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Rating depth structure for rainbow trout.
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30-acre lake in Nanaimo Regional District, British Columbia. The lake tops out around 41 ft. This chart interpolates between a real shoreline and a known maximum depth. It will point you at likely water, but it is not a navigation product. The season-by-season read for each species follows, from the map's own numbers.
Boomerang Lake maps at 30 acres behind 1.5 miles of shoreline. A middling shoreline index (2) gives it some bays to work without being a maze. Roughly 51% of the water is 15 ft or less as modeled, the band where the food chain lives. Figure 0.5 mi of water from one end to the other, 0.2 mi at the beam. It sits in Nanaimo Regional District. Its nearest charted neighbour, Cottle Lake, is 0 mi to the south.
Come spring, look for brook trout tight to the bank in 2 to 15 ft. Expect a summer slide to 10 to 30 ft, then a winter hold in 3 to 20 ft. Start at Break off the point. It's a drop-off holding about 18 ft of water and rates prime come summer. Prime time lands in early morning and the evening. A small spoon fished deep or a trolled lake-clear wobbler + worm is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (10 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (18 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (10 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Break off the point (18 ft) | Small jigging spoon, Tungsten jig + plastic |
The spring pattern is a shallow one: cutthroat trout in 3 to 15 ft. Midsummer fish sit out in 10 to 35 ft before dropping to 10 to 40 ft for winter. The spot to know is Break off the point, a drop-off in about 18 ft of water that rates prime for cutthroat trout in summer. Plan around early morning and the evening in the warm months. Summer baits: a trolled spoon (small) or an inline spinner gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 15 ft | dawn & dusk | Main-lake point (10 ft) | Inline spinner (silver/gold), Small spoon |
| Summer | 10 to 35 ft | dawn & dusk | Break off the point (18 ft) | Trolled spoon (small), Inline spinner |
| Fall | 5 to 25 ft | dawn & dusk | Main-lake point (10 ft) | Casting spoon, Inline spinner |
| Winter | 10 to 40 ft | dawn | Break off the point (18 ft) | Small jigging spoon, Marabou jig |
When the water first warms, rainbow trout slide up into 5 to 20 ft. By summer they slide out to 8 to 30 ft, and by winter most fish are in 8 to 40 ft. If you only fish one area, make it Break off the point: a drop-off around 18 ft that scores prime in winter. In summer the feeding windows fall in early morning and the evening. Keep a dodger + spoon (deep troll) or a flutter spoon rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Main-lake point (10 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Break off the point (18 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Main-lake point (10 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Break off the point (18 ft) | Jigging spoon, Tube jig (white) |
Boomerang Lake carries 5 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 35 ft down.
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 Boomerang Lake specifically, so confirm the current rules before you fish.
Check the official British Columbia fishing regulations →
Boomerang Lake is about 41 ft (12 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, rainbow trout on Boomerang Lake.
Break off the point is the top-rated area: a drop-off in about 18 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 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 Boomerang 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 0 mi · Round Lake 2 mi · Kidney Lake 2 mi · Blackjack Lake 2 mi · Lucid Lake 5 mi · Brannen Lake 5 mi · Green Lake 6 mi · Nanaimo Lakes 6 mi · Rhododendron Lake 6 mi · Diver Lake 7 mi · Long Lake 7 mi · Westwood Lake 7 mi
See how Boomerang Lake stacks up: best rainbow trout lakes in British Columbia · best brook 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.