Sign inSign up free Sign inSign up free Sign inSign up freeLake depth chart
Today's read
Rating depth structure for cutthroat trout.
Recent public catches load as you reach this section.
109-acre lake in Mount Waddington Regional District, British Columbia. The lake tops out around 82 ft. Bathymetry on this water is estimated from its real outline and maximum depth. Use it to shortlist water, then verify with your electronics — and never navigate by it. Species by species, here's what the data says the year looks like.
The drawn water covers 109 acres wrapped in 3.1 miles of bank — one island included. With a 2.1 development index there's bank structure worth casting at, in moderation. 61% of the surface is littoral (under ~15 ft), per the model — cover, weeds and forage water. The basin spans about 1.2 mi end to end and 0.3 mi across at its widest. Mount Waddington Regional District claims this one. Its nearest charted neighbour, Roselle Lake, is 1 mi to the northwest.
Spring puts cutthroat trout in skinny water — 3 to 15 ft is the zone. As the season builds they drop to 10 to 35 ft, wintering in 10 to 40 ft. Fall cutthroat trout concentrate at Main-lake point, a prime-rated point around 21 ft. Warm-month bites cluster around early morning and the evening. A trolled spoon (small) or an inline spinner covers the summer program.
| 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 (21 ft) | Trolled spoon (small), Inline spinner |
| Fall | 5 to 25 ft | dawn & dusk | Main-lake point (21 ft) | Casting spoon, Inline spinner |
| Winter | 10 to 40 ft | dawn | Main-lake point (21 ft) | Small jigging spoon, Marabou jig |
Count 5 structure marks on this chart. The deepest, Deep basin, sits near 70 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 Thiemer Lake specifically, so confirm the current rules before you fish.
Check the official British Columbia fishing regulations →
Thiemer Lake is about 82 ft (25 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 Thiemer Lake.
Main-lake point is the top-rated area: a point in about 21 ft of water that rates prime for cutthroat trout in fall. Open the map above to see every rated 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 Thiemer 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.
Roselle Lake 1 mi · Nimpkish Lake 7 mi · Keogh Lake 9 mi · Ida Lake 9 mi · Angler Lake 11 mi · Three Isle Lake 11 mi · O'Connor Lake 12 mi · Maynard Lake 13 mi · Bonanza Lake 13 mi · Misty Lake 14 mi · Iron Lake 14 mi · Benson Lake 14 mi
See how Thiemer 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 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.