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Fishing Thetis Lake: what the data says
37-acre lake in British Columbia. The lake tops out around 32 ft. Depth here is modeled from the true shoreline and max depth rather than surveyed; use it to plan, not to navigate. What follows comes from the same scoring engine that paints the spots above.
On the chart, Thetis Lake draws 37 acres inside 2.5 miles of shoreline. With a shoreline index of 2.9, this water is all arms and coves — edge habitat well beyond its acreage. Roughly 65% of the water is 15 ft or less as modeled, the band where the food chain lives.
Coho Salmon fishing at Thetis Lake
Start shallow in spring: coho salmon sit in 3 to 25 ft that time of year. Summer pushes them deeper, 10 to 32 ft, and winter fish settle into 10 to 32 ft. The spot to know is Deep basin, a deep basin in about 27 ft of water that rates prime for coho salmon in summer. Warm-month bites cluster around early morning and the evening. Throw a dodger + fly or a medium spoon above the thermocline until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | Main-lake point (8 ft) | Small orange dodger + peanut fly, Thin spoon (orange/silver) |
| Summer | 10 to 32 ft | dawn & dusk | Deep basin (27 ft) | Dodger + fly, Medium spoon above the thermocline |
| Fall | 6 to 32 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Spinner (chartreuse) |
| Winter | 10 to 32 ft | midday | Deep basin (27 ft) | Small spoon, slow troll |
Cutthroat Trout fishing at Thetis Lake
When the water first warms, cutthroat trout slide up into 3 to 15 ft. Summer is a 9 to 32 ft game here, winter a 8 to 32 ft one. Start at Break off the point. It's a drop-off holding about 14 ft of water and rates prime come summer. The feeding windows run early morning and the evening. Keep a trolled spoon (small) or a 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 32 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 32 ft | dawn | Break off the point (14 ft) | Small jigging spoon, Marabou jig |
Pumpkinseed fishing at Thetis Lake
Spring pumpkinseed on Thetis Lake hold shallow, usually 1 to 8 ft. By summer they slide out to 2 to 10 ft, and by winter most fish are in 6 to 18 ft. The chart's best answer is Shallow bay flat — weed flat, 4 ft, prime for spring. Prime time lands in the evening and early morning. The summer box starts with a micro tube or a sponge spider (fly).
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 8 ft | midday & dusk | Shallow bay flat (4 ft) | Micro jig under a float, Tiny beetle-spin |
| Summer | 2 to 10 ft | dusk & dawn | Shallow bay flat (4 ft) | Micro tube, Sponge spider (fly) |
| Fall | 4 to 14 ft | dusk & dawn | Shallow bay flat (4 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 6 to 18 ft | dawn | Shallow bay flat (4 ft) | Tungsten ice jig + plastic, Tiny spoon |
Smallmouth Bass fishing at Thetis Lake
The spring pattern is a shallow one: smallmouth bass in 3 to 12 ft. As the season builds they drop to 10 to 30 ft, wintering in 10 to 32 ft. Top water on the chart: Main-lake point, a point in the 8-ft range, prime in fall. Time it for early morning and the evening. Summer baits: a drop shot (goby/minnow) or a ned rig gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Main-lake point (8 ft) | Ned rig, Tube jig |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (14 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 8 to 25 ft | midday & dawn | Main-lake point (8 ft) | Jerkbait, Blade bait |
| Winter | 10 to 32 ft | midday | Break off the point (14 ft) | Blade bait, Hair jig |
Rainbow Trout fishing at Thetis Lake
In spring, rainbow trout run shallow here, mostly 5 to 20 ft. Midsummer fish sit out in 8 to 30 ft before dropping to 6 to 32 ft for winter. Winter rainbow trout concentrate at Break off the point, a prime-rated drop-off around 14 ft. Fish it in early morning and the evening and you'll meet the bite. 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 32 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 6 to 32 ft | dawn | Break off the point (14 ft) | Jigging spoon, Tube jig (white) |
Notable structure
- Deep basin: deep basin, around 27 ft
- Break off the point: drop-off, around 14 ft
- Main-lake point: point, around 8 ft
- Secondary point: point, around 8 ft
- Shallow bay flat: weed flat, around 4 ft
- Back-bay flat: weed flat, around 4 ft
Thetis Lake fishing regulations
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 Thetis Lake specifically, so confirm the current rules before you fish.
Check the official British Columbia fishing regulations →
Common questions
How deep is Thetis Lake?
Thetis Lake is about 32 ft (10 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.
What fish are in Thetis Lake?
Anglers target smallmouth bass, rainbow trout, coho salmon, cutthroat trout, pumpkinseed on Thetis Lake.
Where is the best fishing spot on Thetis Lake?
Deep basin is the top-rated area: a deep basin in about 27 ft of water that rates prime for coho salmon in summer. The interactive chart above rates every spot for each species and season.
When is the best time to fish Thetis Lake?
For coho salmon, 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.
What are the fishing regulations for Thetis Lake?
Fishing on Thetis 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.
Nearby waters
Pike Lake 1 mi · Florence Lake 2 mi · Matson Lake 2 mi · Maltby Lake 2 mi · Langford Lake 3 mi · Fizzle Lake 3 mi · Glen Lake 3 mi · Mitchell Lake 3 mi · Prospect Lake 3 mi · Killarney Lake 4 mi · Third Lake 4 mi · Beaver Lake 5 mi
See how Thetis Lake stacks up: best smallmouth bass lakes in British Columbia · best rainbow trout lakes in British Columbia · best coho salmon lakes in British Columbia · best cutthroat trout lakes in British Columbia
Browse all British Columbia fishing maps or see every water on DepthScout. How we build these maps. For fishing guidance only, never navigation.