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Rating depth structure for rainbow trout.
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144-acre lake in Cowichan Valley Regional District, British Columbia. The lake tops out around 105 ft. The chart is a model: real shoreline, published maximum depth, interpolated in between. A planning tool, never a navigation product. The rest of this page walks each species through its year, using the map's own scoring.
Drawn out, this is 144 acres of water rimmed by 2.4 miles of bank. Index 1.5 on the shoreline: a few honest points and pockets, nothing labyrinthine. Roughly 7% of the water is 15 ft or less as modeled, the band where the food chain lives. End to end it runs roughly 0.9 mi, about 0.4 mi across. You'll find it in Cowichan Valley Regional District. Closest neighbour on DepthScout: Beaver Lake, 1 mi east of here.
Start shallow in spring: brook trout sit in 2 to 15 ft that time of year. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 3 to 20 ft. The spot to know is Shallow bay flat, a feeding flat in about 6 ft of water that rates good for brook trout in spring. Warm-month bites cluster around early morning and the evening. Throw a small spoon fished deep or a trolled lake-clear wobbler + worm until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Shallow bay flat (6 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | open water | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | open water | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Shallow bay flat (6 ft) | Small jigging spoon, Tungsten jig + plastic |
Early season cutthroat trout use the shallows, holding in 3 to 15 ft. Expect a summer slide to 10 to 35 ft, then a winter hold in 10 to 40 ft. Put Main-lake point first on the milk run — a point near 26 ft that grades prime for summer. In summer the feeding windows fall in early morning and the evening. Tie on a trolled spoon (small) or an inline spinner and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 15 ft | dawn & dusk | open water | Inline spinner (silver/gold), Small spoon |
| Summer | 10 to 35 ft | dawn & dusk | Main-lake point (26 ft) | Trolled spoon (small), Inline spinner |
| Fall | 5 to 25 ft | dawn & dusk | Main-lake point (26 ft) | Casting spoon, Inline spinner |
| Winter | 10 to 40 ft | dawn | Main-lake point (26 ft) | Small jigging spoon, Marabou jig |
Start shallow in spring: kokanee sit in 10 to 30 ft that time of year. Summer pushes them deeper, 30 to 70 ft, and winter fish settle into 20 to 80 ft. The spot to know is Deep basin, a deep basin in about 89 ft of water that rates prime for kokanee in winter. Warm-month bites cluster around early morning. Throw a dodger + pink/orange squid on downrigger or a kokanee bug + corn until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 30 ft | dawn | Deep basin (89 ft) | Small dodger + squid (pink), Wedding-ring spinner + corn |
| Summer | 30 to 70 ft | dawn | Break off the point (47 ft) | Dodger + pink/orange squid on downrigger, Kokanee bug + corn |
| Fall | 5 to 40 ft | dawn | Break off the point (47 ft) | Dodger + squid (deeper red/purple), Small spoon |
| Winter | 20 to 80 ft | dawn | Deep basin (89 ft) | Small glow jig + corn or maggot, Tiny spoon |
The spring pattern is a shallow one: rainbow trout in 5 to 20 ft. As the season builds they drop to 8 to 30 ft, wintering in 8 to 40 ft. Top water on the chart: Main-lake point, a point in the 26 ft range, prime in fall. Time it for early morning and the evening. Summer baits: a dodger + spoon (deep troll) or a flutter spoon gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Shallow bay flat (6 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Main-lake point (26 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Main-lake point (26 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Break off the point (47 ft) | Jigging spoon, Tube jig (white) |
Count 6 structure marks on this chart. The deepest, Deep basin, sits near 89 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 Mesachie Lake specifically, so confirm the current rules before you fish.
Check the official British Columbia fishing regulations →
Mesachie Lake is about 105 ft (32 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, cutthroat trout, kokanee, rainbow trout on Mesachie Lake.
Main-lake point is the top-rated area: a point in about 26 ft of water that rates prime for cutthroat trout in summer. The map above holds the full rated-spot list for every species and season.
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 Mesachie 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.
Beaver Lake 1 mi · Kwassin Lake 3 mi · Grant Lake 4 mi · Mayo Lake 7 mi · Cowichan Lake 8 mi · Dimple Lake 9 mi · Sherk Lake 9 mi · Doe Lake 10 mi · Rheinhart Lake 10 mi · Silver Lake 13 mi · Maid Lake 13 mi · Holyoak Lake 14 mi
See how Mesachie Lake stacks up: best rainbow trout lakes in British Columbia · best brook trout lakes in British Columbia · best kokanee lakes in British Columbia · best cutthroat trout lakes in British Columbia
More water nearby: Cowichan Valley Regional District fishing maps (30 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.