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Rating depth structure for rainbow trout.
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325-acre lake in Bulkley-Nechako Regional District, British Columbia. The lake tops out around 31 ft. What you see is a modeled chart: the shoreline is real, the max depth is published, and the contours between are estimated. Plan with it; don't navigate by it. Every species below gets its seasonal read from the same numbers driving the chart.
On the chart, Kathlyn Lake draws 325 acres inside 3.3 miles of shoreline. Nearly circular (index 1.3), so the story is the bottom, not the bank. The shallow band under 15 ft claims about 57% of the surface on the model — that's where the groceries are. Figure 1 mi of water from one end to the other, 0.9 mi at the beam. You'll find it in Bulkley-Nechako Regional District. For a second option, Toboggan Lake lies 4 mi northwest.
When the water first warms, cutthroat trout slide up into 3 to 15 ft. By summer they slide out to 9 to 31 ft, and by winter most fish are in 8 to 31 ft. If you only fish one area, make it Break off the point: a drop-off around 14 ft that scores prime in summer. In summer the feeding windows fall in early morning and the evening. Keep a trolled spoon (small) or an inline spinner rigged through the warm months.
| 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 | 9 to 31 ft | dawn & dusk | Break off the point (14 ft) | Trolled spoon (small), Inline spinner |
| Fall | 5 to 25 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Inline spinner |
| Winter | 8 to 31 ft | dawn | Break off the point (14 ft) | Small jigging spoon, Marabou jig |
In spring, rainbow trout run shallow here, mostly 5 to 20 ft. Summer pushes them deeper, 8 to 30 ft, and winter fish settle into 6 to 31 ft. Break off the point is the standout, a drop-off at roughly 14 ft, rated prime for winter rainbow trout. Time it for early morning and the evening. You won't need more than a dodger + spoon (deep troll) or a flutter spoon most summer days.
| 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 | 8 to 30 ft | dawn & dusk | Break off the point (14 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 9 to 31 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 6 to 31 ft | dawn | Break off the point (14 ft) | Jigging spoon, Tube jig (white) |
The chart marks 6 structure features on Kathlyn Lake; the deepest is Deep basin at about 26 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 Kathlyn Lake specifically, so confirm the current rules before you fish.
Check the official British Columbia fishing regulations →
Kathlyn Lake is about 31 ft (9 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 Kathlyn Lake.
Break off the point is the top-rated area: a drop-off in about 14 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 Kathlyn 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.
Toboggan Lake 4 mi · Bigelow Lake 5 mi · Seymour Lake 6 mi · Aldrich Lake 8 mi · Dennis Lake 10 mi · Tyhee Lake 10 mi · Mcdowell Lake 12 mi · Duckwing Lake 14 mi · Duckbill Lake 14 mi · Taltzen Lake 14 mi · Kitseguecla Lake 16 mi · Mcdonell Lake 16 mi
See how Kathlyn Lake stacks up: best rainbow trout lakes in British Columbia · best cutthroat trout 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.