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.
202-acre lake in Bulkley-Nechako Regional District, British Columbia. The lake tops out around 56 ft. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Species by species, here's what the data says the year looks like.
On the chart, Tlutsacho Lake draws 202 acres inside 4.8 miles of shoreline — one island included. That shoreline is heavily fingered (development index 2.4) — bays, points and pockets everywhere, which multiplies the fishable edge. 66% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. The basin spans about 1.9 mi end to end and 0.4 mi across at its widest. The water lies in Bulkley-Nechako Regional District. The nearest mapped water is Airline Lake, 3 mi to the east.
Start shallow in spring: rainbow trout sit in 5 to 20 ft that time of year. Warm water sends them out to 8 to 30 ft; cold water stacks them in 8 to 40 ft. Top water on the chart: Break off the point, a drop-off in the 1 ft range, prime in winter. Fish it in early morning and the evening and you'll meet the bite. Throw a dodger + spoon (deep troll) or a flutter spoon until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Main-lake point (1 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Break off the point (1 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Main-lake point (1 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Break off the point (1 ft) | Jigging spoon, Tube jig (white) |
Come spring, look for lake whitefish tight to the bank in 15 to 45 ft. Expect a summer slide to 17 to 56 ft, then a winter hold in 17 to 56 ft. Start at Deep basin. It's a deep basin holding about 48 ft of water and rates prime come summer. Prime time lands in early morning. A blade bait vertical or a small jigging spoon is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 15 to 45 ft | midday & dawn | open water | Small jig + waxworm, Blade bait (small) |
| Summer | 17 to 56 ft | dawn | Deep basin (48 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 8 to 30 ft | dusk | Break off the point (1 ft) | Small spoon (gold), Jig + plastic larva |
| Winter | 17 to 56 ft | midday & dawn | Deep basin (48 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
Tlutsacho Lake carries 6 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 48 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 Tlutsacho Lake specifically, so confirm the current rules before you fish.
Check the official British Columbia fishing regulations →
Tlutsacho Lake is about 56 ft (17 m) deep at its deepest point. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Anglers target rainbow trout, lake whitefish on Tlutsacho Lake.
Deep basin is the top-rated area: a deep basin in about 48 ft of water that rates prime for lake whitefish in summer. Scroll up to the map for the complete spot list by species and season.
For rainbow 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 Tlutsacho 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.
Airline Lake 3 mi · Takatoot Lake 3 mi · Kloch Lake 7 mi · Glaucers Lake 7 mi · Macdonald Lake 9 mi · Elliott Lake 10 mi · Dan Miner Lake 11 mi · Natazutlo Lake 11 mi · Purvis Lake 12 mi · Kazchek Lake 12 mi · Tamasgale Lake 15 mi · Ahdatay Lake 16 mi
See how Tlutsacho Lake stacks up: best rainbow trout lakes in British Columbia · best lake whitefish lakes in British Columbia
More water nearby: Bulkley-Nechako Regional District fishing maps (324 charts). Browse all British Columbia fishing maps or see every water on DepthScout. Bathymetry: published agency survey data. 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.