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Rating depth structure for cutthroat trout.
Recent public catches load as you reach this section.
52-acre lake in British Columbia. The lake tops out around 36 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. What the data behind the map says about each species, season by season:
Three Isle Lake maps at 52 acres behind 1.4 miles of shoreline. Nearly circular (index 1.4), so the story is the bottom, not the bank. About 45% of the surface sits shallower than 15 ft on the modeled chart — that's the weed-and-bait zone. The basin spans about 0.6 mi end to end and 0.2 mi across at its widest. Mount Waddington Regional District claims this one. If the bite dies, Angler Lake is 1 mi to the north.
Start shallow in spring: cutthroat trout sit in 3 to 15 ft that time of year. Summer pushes them deeper, 10 to 35 ft, and winter fish settle into 9 to 36 ft. The spot to know is Break off the point, a drop-off in about 16 ft of water that rates prime for cutthroat trout in summer. Warm-month bites cluster around early morning and the evening. Throw a trolled spoon (small) or an inline spinner until the fish tell you otherwise.
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 | 3 to 15 ft | dawn & dusk | Main-lake point (9 ft) | Inline spinner (silver/gold), Small spoon |
| Summer | 10 to 35 ft | dawn & dusk | Break off the point (16 ft) | Trolled spoon (small), Inline spinner |
| Fall | 5 to 25 ft | dawn & dusk | Main-lake point (9 ft) | Casting spoon, Inline spinner |
| Winter | 9 to 36 ft chart-limited; documented 10 to 40 ft | dawn | Break off the point (16 ft) | Small jigging spoon, Marabou jig |
Structure-wise the chart holds 5 features, led in depth by Deep basin at roughly 31 ft.
Access data: British Columbia Recreation Sites and Trails - Recreation Sites Subset; Government of British Columbia - Dual-Verified Provincial Crown Land Shoreline; Government of British Columbia - Dual-Verified Provincial Crown Land Shoreline. Confirm conditions and fees locally before you launch.
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 Three Isle Lake specifically, so confirm the current rules before you fish.
Check the official British Columbia fishing regulations →
Three Isle Lake is about 36 ft (11 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 on Three Isle Lake.
Break off the point is the top-rated area: a drop-off in about 16 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 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 Three Isle 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.
Angler Lake 1 mi · Keogh Lake 3 mi · Maynard Lake 4 mi · Benson Lake 4 mi · Kathleen Lake 5 mi · Iron Lake 6 mi · O'Connor Lake 6 mi · Alice Lake 8 mi · Victoria Lake 9 mi · Sara Lake 10 mi · Nimpkish Lake 11 mi · Misty Lake 11 mi
See how Three Isle Lake stacks up: best cutthroat trout lakes in British Columbia
More water nearby: Mount Waddington Regional District fishing maps (56 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.