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Rating depth structure for smallmouth bass.
Recent public catches load as you reach this section.
37-acre lake in British Columbia. The lake tops out around 32 ft. The depth picture is modeled, anchored to the true shoreline and the water's published max depth — a scouting aid, never a chart to run a boat by. Here is how the season plays out for each species, straight from the data behind the map.
Drawn out, this is 37 acres of water rimmed by 2.5 miles of bank. An index of 2.9 puts the bank firmly in maze territory: point after pocket after cove, every one a casting target. Littoral water — the productive band under ~15 ft — makes up 64% of this chart, as modeled. The basin spans about 0.6 mi end to end and 0.4 mi across at its widest. The water lies in Capital Regional District. The nearest mapped water is Pike Lake, 1 mi to the north.
These fish are listed in an exact-water agency record as forage or ecological context. They are not target-species profiles and do not affect DepthScout's Prime, Good, or Fair spot ratings.
Official exact-water fish record. The listing documents source-recorded presence, not present abundance or guaranteed catchability.
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.
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 25 ft | dawn & dusk | Main-lake point (8 ft) | Small orange dodger + peanut fly, Thin spoon (orange/silver) |
| Summer | 10 to 32 ft chart-limited; documented 30 to 70 ft | dawn & dusk | Deep basin (27 ft) | Dodger + fly, Medium spoon above the thermocline |
| Fall | 6 to 32 ft chart-limited; documented 8 to 40 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Spinner (chartreuse) |
| Winter | 10 to 32 ft chart-limited; documented 20 to 60 ft | midday | Deep basin (27 ft) | Small spoon, slow troll |
When the water first warms, cutthroat trout slide up into 3 to 15 ft. Summer is a 9 to 32 ft game here, winter an 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 an inline spinner rigged through the warm months.
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 (8 ft) | Inline spinner (silver/gold), Small spoon |
| Summer | 9 to 32 ft chart-limited; documented 10 to 35 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 chart-limited; documented 10 to 40 ft | dawn | Break off the point (14 ft) | Small jigging spoon, Marabou jig |
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 |
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.
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 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 chart-limited; documented 20 to 45 ft | midday | Break off the point (14 ft) | Blade bait, Hair jig |
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.
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 | 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 chart-limited; documented 10 to 35 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 6 to 32 ft chart-limited; documented 8 to 40 ft | dawn | Break off the point (14 ft) | Jigging spoon, Tube jig (white) |
Spring puts brown bullhead in skinny water — 2 to 8 ft is the zone. As the season builds they drop to 3 to 12 ft, wintering in 10 to 25 ft. Spring brown bullhead concentrate at Shallow bay flat, a prime-rated weed flat around 4 ft. Warm-month bites cluster around after dark and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | dusk & night | Shallow bay flat (4 ft) | |
| Summer | 3 to 12 ft | night & dusk | Shallow bay flat (4 ft) | |
| Fall | 5 to 15 ft | dusk | Shallow bay flat (4 ft) | |
| Winter | 10 to 25 ft | midday | Deep basin (27 ft) |
Structure-wise the chart holds 6 features, led in depth by Deep basin at roughly 27 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 Thetis Lake specifically, so confirm the current rules before you fish.
Check the official British Columbia fishing regulations →
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.
Anglers target coho salmon, cutthroat trout, pumpkinseed, smallmouth bass, rainbow trout, brown bullhead 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.
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.
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.
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 · Victoria Harbour 4 mi · Third Lake 4 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
More water nearby: Capital Regional District fishing maps (60 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.