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Rating depth structure for rainbow trout.
Recent public catches load as you reach this section.
220-acre lake in British Columbia. The lake tops out around 243 ft. The surface is reconstructed from 64 measured spot soundings collected in 1985; water between those measurements is interpolated. Treat the contours between those soundings as a guide, never as navigation. Every species below gets its seasonal read from the same numbers driving the chart.
Drawn out, this is 219 acres of water rimmed by 3.4 miles of bank. Index 1.6 on the shoreline: a few honest points and pockets, nothing labyrinthine. About 6% of the surface sits shallower than 15 ft on the modeled chart — that's the weed-and-bait zone. The basin spans about 1.4 mi end to end and 0.4 mi across at its widest. You'll find it in Skeena-Queen Charlotte Regional District. Closest neighbour on DepthScout: Minerva Lake, 3 mi southwest of here.
Start shallow in spring: rainbow trout sit in 5 to 20 ft that time of year. Summer pushes them deeper, 8 to 30 ft, and winter fish settle into 8 to 40 ft. The spot to know is Main-lake point, a point in about 1 ft of water that rates good for rainbow trout in spring. Warm-month bites cluster around early morning and the evening. 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 | open water | 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 | open water | Jigging spoon, Tube jig (white) |
The spring pattern is a shallow one: kokanee in 10 to 30 ft. As the season builds they drop to 30 to 70 ft, wintering in 20 to 80 ft. Time it for early morning. Summer baits: a dodger + pink/orange squid on downrigger or a kokanee bug + corn gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 30 ft | dawn | open water | Small dodger + squid (pink), Wedding-ring spinner + corn |
| Summer | 30 to 70 ft | dawn | open water | Dodger + pink/orange squid on downrigger, Kokanee bug + corn |
| Fall | 5 to 40 ft | dawn | open water | Dodger + squid (deeper red/purple), Small spoon |
| Winter | 20 to 80 ft | dawn | open water | Small glow jig + corn or maggot, Tiny spoon |
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. 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 | open water | Small jig + waxworm, Blade bait (small) |
| Summer | 40 to 90 ft | dawn | open water | Blade bait vertical, Small jigging spoon |
| Fall | 8 to 30 ft | dusk | open water | Small spoon (gold), Jig + plastic larva |
| Winter | 25 to 70 ft | midday & dawn | open water | Jigging spoon + bead chain, Tungsten jig + waxie |
The spring pattern is a shallow one: burbot in 25 to 70 ft. Midsummer fish sit out in 50 to 120 ft before dropping to 15 to 60 ft for winter. 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 | open water | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 50 to 120 ft | night & midday | open water | Heavy jig + cut bait |
| Fall | 30 to 80 ft | night & dusk | open water | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 15 to 60 ft | night & dusk | open water | Glow tungsten + cut bait, Rattle spoon + minnow head |
Lachmach Lake carries 6 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 243 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 Lachmach Lake specifically, so confirm the current rules before you fish.
Check the official British Columbia fishing regulations →
Lachmach Lake is about 242.78 ft (74 m) deep at its deepest point. The surface is reconstructed from 64 measured spot soundings collected in 1985; water between those measurements is interpolated. Treat the contours between those soundings as a guide, never as navigation.
Anglers target rainbow trout, kokanee, lake whitefish, burbot on Lachmach Lake. This isn't a survey of the water — none is published for it — but an informed estimate from the species common to the region, narrowed by this water's depth, size and each species' range.
Main-lake point is the top-rated area: a point in about 1 ft of water that rates good for rainbow trout in spring. Open the map above to see every rated spot for each 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 Lachmach 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.
Minerva Lake 3 mi · Leverson Lake 3 mi · Kergin Lake 7 mi · Marion Lake 8 mi · Rainbow Lake 9 mi · Bill Lake 9 mi · Prudhomme Lake 9 mi · Arden Lake 10 mi · Diana Lake 11 mi · Toon Lake 14 mi · Sarah Lake 17 mi · Davis Lake 18 mi
See how Lachmach Lake stacks up: best rainbow trout lakes in British Columbia · best kokanee lakes in British Columbia · best lake whitefish lakes in British Columbia · best burbot lakes in British Columbia
More water nearby: Skeena-Queen Charlotte Regional District fishing maps (46 charts). Browse all British Columbia fishing maps. See every water on DepthScout. Bathymetry credit: British Columbia Fish and Wildlife Branch · Lachmach Lake historic bathymetric chart spot soundings; contour geometry independently interpolated by 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.