Lake depth chart
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Rating depth structure for lake trout.
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724-acre lake in Bulkley-Nechako Regional District, British Columbia. The lake tops out around 118 ft. These contours are modeled — built from the real shoreline and the water's maximum depth — so read them as a guide, never as navigation. Species by species, here's what the data says the year looks like.
Drawn out, this is 724 acres of water rimmed by 7.7 miles of bank. Index 2.1 on the shoreline: a few honest points and pockets, nothing labyrinthine. 7% of the surface is littoral (under ~15 ft), per the model — cover, weeds and forage water. Call it 3.2 mi long by 0.6 mi wide at the broadest reach. You'll find it in Bulkley-Nechako Regional District. The nearest mapped water is Macdonald Lake, 3 mi to the east.
The spring pattern is a shallow one: burbot in 25 to 70 ft. Midsummer fish sit out in 35 to 118 ft before dropping to 15 to 60 ft for winter. The spot to know is Deep basin, a deep basin in about 100 ft of water that rates prime for burbot in summer. Plan around after dark and midday in the warm months. Summer baits: a heavy jig + cut bait gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 25 to 70 ft | night & dusk | Break off the point (53 ft) | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 35 to 118 ft | night & midday | Deep basin (100 ft) | Heavy jig + cut bait |
| Fall | 30 to 80 ft | night & dusk | Break off the point (53 ft) | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 15 to 60 ft | night & dusk | Break off the point (53 ft) | Glow tungsten + cut bait, Rattle spoon + minnow head |
The spring pattern is a shallow one: lake trout in 10 to 40 ft. Midsummer fish sit out in 35 to 118 ft before dropping to 20 to 80 ft for winter. The spot to know is Deep basin, a deep basin in about 100 ft of water that rates prime for lake trout in summer. Plan around early morning in the warm months. Summer baits: a white tube jig (deep) or a magnum spoon on downrigger gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Main-lake point (30 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 35 to 118 ft | dawn | Deep basin (100 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Main-lake point (30 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 20 to 80 ft | dawn | Break off the point (53 ft) | White tube jig, Airplane jig |
Come spring, look for lake whitefish tight to the bank in 15 to 45 ft. They move out to 40 to 90 ft in summer and finish the year down in 25 to 70 ft. If you only fish one area, make it Break off the point: a drop-off around 53 ft that scores prime in summer. Best bite is 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 | Break off the point (53 ft) | Small jig + waxworm, Blade bait (small) |
| Summer | 40 to 90 ft | dawn | Break off the point (53 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 8 to 30 ft | dusk | Main-lake point (30 ft) | Small spoon (gold), Jig + plastic larva |
| Winter | 25 to 70 ft | midday & dawn | Break off the point (53 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
Count 6 structure marks on this chart. The deepest, Deep basin, sits near 100 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 Purvis Lake specifically, so confirm the current rules before you fish.
Check the official British Columbia fishing regulations →
Purvis Lake is about 118 ft (36 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 burbot, lake trout, lake whitefish on Purvis Lake.
Deep basin is the top-rated area: a deep basin in about 100 ft of water that rates prime for burbot in summer. Scroll up to the map for the complete spot list by species and season.
For burbot, the summer bite is best in after dark and midday. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Purvis 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.
Macdonald Lake 3 mi · Glaucers Lake 4 mi · Takatoot Lake 10 mi · Electra Lake 10 mi · Elliott Lake 10 mi · Tlutsacho Lake 12 mi · Dan Miner Lake 12 mi · Albert Lake 13 mi · Airline Lake 14 mi · Dia Lake 15 mi · Calais Lake 15 mi · Natazutlo Lake 15 mi
See how Purvis Lake stacks up: best lake trout lakes in British Columbia · best lake whitefish lakes in British Columbia · best burbot 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. 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.