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Rating depth structure for cutthroat trout.
Recent public catches load as you reach this section.
648-acre lake in Skeena-Queen Charlotte Regional District, British Columbia. The lake tops out around 104 ft. The contours come from a model of the real basin shape and its known max depth. Read them as probabilities, not soundings, and keep them out of navigation decisions. Here is how the season plays out for each species, straight from the data behind the map.
On the chart, Diana Lake draws 648 acres inside 10.2 miles of shoreline — one island included. That shoreline is heavily fingered (development index 2.9) — bays, points and pockets everywhere, which multiplies the fishable edge. Roughly 27% of the water is 15 ft or less as modeled, the band where the food chain lives. End to end it runs roughly 2.6 mi, about 1.4 mi across. You'll find it in Skeena-Queen Charlotte Regional District. Closest neighbour on DepthScout: Rainbow Lake, 2 mi east of here.
When the water first warms, cutthroat trout slide up into 3 to 15 ft. By summer they slide out to 10 to 35 ft, and by winter most fish are in 10 to 40 ft. If you only fish one area, make it Main-lake point: a point around 26 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 | open water | Inline spinner (silver/gold), Small spoon |
| Summer | 10 to 35 ft | dawn & dusk | Main-lake point (26 ft) | Trolled spoon (small), Inline spinner |
| Fall | 5 to 25 ft | dawn & dusk | Main-lake point (26 ft) | Casting spoon, Inline spinner |
| Winter | 10 to 40 ft | dawn | Main-lake point (26 ft) | Small jigging spoon, Marabou jig |
Diana Lake carries 6 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 88 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 Diana Lake specifically, so confirm the current rules before you fish.
Check the official British Columbia fishing regulations →
Diana Lake is about 104 ft (32 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 Diana Lake.
Main-lake point is the top-rated area: a point in about 26 ft of water that rates prime for cutthroat trout in summer. The interactive chart above rates every spot for each 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 Diana 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.
Rainbow Lake 2 mi · Prudhomme Lake 3 mi · Kergin Lake 7 mi · Minerva Lake 8 mi · Lachmach Lake 11 mi · Leverson Lake 12 mi · Marion Lake 13 mi · Bill Lake 14 mi · Sarah Lake 20 mi · Arden Lake 21 mi · Hayward Lake 21 mi · Madeline Lake 21 mi
See how Diana Lake stacks up: best cutthroat trout lakes in British Columbia
More water nearby: Skeena-Queen Charlotte Regional District fishing maps (46 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.