Sign inSign up free Sign inSign up free Sign inSign up freeLake depth chart
Today's read
Rating depth structure for rainbow trout.
Recent public catches load as you reach this section.
12-acre lake in Columbia-Shuswap Regional District, British Columbia. The lake tops out around 18 ft. Contours on this water are modeled from its actual shoreline and max depth. Good for finding likely water, never for navigation. What the data behind the map says about each species, season by season:
The drawn water covers 12 acres wrapped in 0.8 miles of bank. With a 1.6 development index there's bank structure worth casting at, in moderation. About 92% of the surface sits shallower than 15 ft on the modeled chart — that's the weed-and-bait zone. End to end it runs roughly 0.3 mi. It sits in Columbia-Shuswap Regional District. If the bite dies, Begbie Lake is 4 mi to the south.
Early season brook trout use the shallows, holding in 2 to 15 ft. Expect a summer slide to 5 to 18 ft, then a winter hold in 3 to 18 ft. Put Deep basin first on the milk run — a deep basin near 15 ft that grades prime for summer. In summer the feeding windows fall in early morning and the evening. Tie on a small spoon fished deep or a trolled lake-clear wobbler + worm and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (8 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 5 to 18 ft | dawn & dusk | Deep basin (15 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (8 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 18 ft | dawn | Deep basin (15 ft) | Small jigging spoon, Tungsten jig + plastic |
Spring rainbow trout on Williamson Lake hold shallow, usually 5 to 18 ft. Depth-wise the year is flat: 5 to 18 ft in summer, 4 to 18 ft once it turns cold. The chart's best answer is Break off the point — drop-off, 8 ft, prime for winter. Prime time lands in early morning and the evening. The summer box starts with a dodger + spoon (deep troll) or a flutter spoon.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 18 ft | dawn & dusk | Main-lake point (8 ft) | Inline spinner (silver), Small spoon |
| Summer | 5 to 18 ft | dawn & dusk | Break off the point (8 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 5 to 18 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 4 to 18 ft | dawn | Break off the point (8 ft) | Jigging spoon, Tube jig (white) |
Start shallow in spring: lake whitefish sit in 5 to 18 ft that time of year. They don't go far with the seasons — 5 to 18 ft covers summer, 5 to 18 ft covers winter. The spot to know is Deep basin, a deep basin in about 15 ft of water that rates prime for lake whitefish in summer. Warm-month bites cluster around early morning. Throw a blade bait vertical or a small jigging spoon until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 18 ft | midday & dawn | Break off the point (8 ft) | Small jig + waxworm, Blade bait (small) |
| Summer | 5 to 18 ft | dawn | Deep basin (15 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 5 to 18 ft | dusk | Break off the point (8 ft) | Small spoon (gold), Jig + plastic larva |
| Winter | 5 to 18 ft | midday & dawn | Deep basin (15 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
The spring pattern is a shallow one: yellow perch in 3 to 12 ft. Midsummer fish sit out in 5 to 18 ft before dropping to 5 to 18 ft for winter. The spot to know is Deep basin, a deep basin in about 15 ft of water that rates prime for yellow perch in fall. Plan around early morning in the warm months. Summer baits: a drop-shot micro plastics or a small spoon tipped with worm gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | open water | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 5 to 18 ft | dawn | Deep basin (15 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 5 to 18 ft | midday | Deep basin (15 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 5 to 18 ft | midday & dawn | Deep basin (15 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Williamson Lake carries 3 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 15 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 Williamson Lake specifically, so confirm the current rules before you fish.
Check the official British Columbia fishing regulations →
Williamson Lake is about 18 ft (5 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 brook trout, rainbow trout, lake whitefish, yellow perch on Williamson Lake.
Deep basin is the top-rated area: a deep basin in about 15 ft of water that rates prime for lake whitefish in summer. Every other rated spot, per species and season, is on the map above.
For brook 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 Williamson 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.
Begbie Lake 4 mi · Echo Lake 9 mi · Greenbush Lake 15 mi · Coursier Lake 19 mi · Kidney Lake 25 mi · Armstrong Lake 28 mi · Staubert Lake 30 mi · Mabel Lake 35 mi · Pettipiece Lake 36 mi · Parmater Lake 36 mi · Wright Lake 37 mi · Mara Lake 40 mi
See how Williamson Lake stacks up: best rainbow trout lakes in British Columbia · best yellow perch lakes in British Columbia · best brook trout lakes in British Columbia · best lake whitefish lakes in British Columbia
More water nearby: Columbia-Shuswap Regional District fishing maps (49 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.