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98-acre lake in British Columbia. The lake tops out around 39 ft. The chart is a model: real shoreline, published maximum depth, interpolated in between. A planning tool, never a navigation product. Every species below gets its seasonal read from the same numbers driving the chart.
Drawn out, this is 98 acres of water rimmed by 2.3 miles of bank. Index 1.7 on the shoreline: a few honest points and pockets, nothing labyrinthine. Littoral water — the productive band under ~15 ft — makes up 65% of this chart, as modeled. End to end it runs roughly 1 mi, about 0.3 mi across. You'll find it in Cariboo Regional District. Closest neighbour on DepthScout: Eric Lake, 3 mi northwest 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 39 ft. The spot to know is Break off the point, a drop-off in about 18 ft of water that rates prime for rainbow trout in winter. 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.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Main-lake point (10 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Break off the point (18 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Main-lake point (10 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 39 ft chart-limited; documented 8 to 40 ft | dawn | Break off the point (18 ft) | 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 12 to 39 ft, wintering in 10 to 39 ft. Top water on the chart: Deep basin, a deep basin in the 33 ft range, prime in summer. Time it for early morning. Summer baits: a dodger + pink/orange squid on downrigger or a kokanee bug + corn gets it done.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 30 ft | dawn | Deep basin (33 ft) | Small dodger + squid (pink), Wedding-ring spinner + corn |
| Summer | 12 to 39 ft chart-limited; documented 30 to 70 ft | dawn | Deep basin (33 ft) | Dodger + pink/orange squid on downrigger, Kokanee bug + corn |
| Fall | 5 to 39 ft chart-limited; documented 5 to 40 ft | dawn | Deep basin (33 ft) | Dodger + squid (deeper red/purple), Small spoon |
| Winter | 10 to 39 ft chart-limited; documented 20 to 80 ft | dawn | Deep basin (33 ft) | Small glow jig + corn or maggot, Tiny spoon |
Come spring, look for lake whitefish tight to the bank in 12 to 39 ft. Through summer count on 12 to 39 ft; the winter hold is 12 to 39 ft. If you only fish one area, make it Deep basin: a deep basin around 33 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.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 12 to 39 ft chart-limited; documented 15 to 45 ft | midday & dawn | Break off the point (18 ft) | Small jig + waxworm, Blade bait (small) |
| Summer | 12 to 39 ft chart-limited; documented 40 to 90 ft | dawn | Deep basin (33 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 8 to 30 ft | dusk | Break off the point (18 ft) | Small spoon (gold), Jig + plastic larva |
| Winter | 12 to 39 ft chart-limited; documented 25 to 70 ft | midday & dawn | Deep basin (33 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
The spring pattern is a shallow one: burbot in 12 to 39 ft. The depth story barely changes: 12 to 39 ft through summer, 10 to 39 ft in winter. The spot to know is Deep basin, a deep basin in about 33 ft of water that rates prime for burbot in spring. Plan around after dark and midday in the warm months. Summer baits: a heavy jig + cut bait gets it done.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 12 to 39 ft chart-limited; documented 25 to 70 ft | night & dusk | Deep basin (33 ft) | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 12 to 39 ft chart-limited; documented 50 to 120 ft | night & midday | Deep basin (33 ft) | Heavy jig + cut bait |
| Fall | 12 to 39 ft chart-limited; documented 30 to 80 ft | night & dusk | Deep basin (33 ft) | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 10 to 39 ft chart-limited; documented 15 to 60 ft | night & dusk | Deep basin (33 ft) | Glow tungsten + cut bait, Rattle spoon + minnow head |
Structure-wise the chart holds 6 features, led in depth by Deep basin at roughly 33 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 Ratdam Lake specifically, so confirm the current rules before you fish.
Check the official British Columbia fishing regulations →
Ratdam Lake is about 39 ft (12 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 rainbow trout, kokanee, lake whitefish, burbot on Ratdam 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.
Deep basin is the top-rated area: a deep basin in about 33 ft of water that rates prime for kokanee in summer. The interactive chart above rates every 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 Ratdam 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.
Eric Lake 3 mi · Alah Lake 3 mi · Antoine Lake 4 mi · Little Horsefly Lake 4 mi · Shiko Lake 5 mi · Hooker Lake 5 mi · Kwun Lake 5 mi · China Cabin Lake 5 mi · Abbott Lake 5 mi · Douglas Lake 5 mi · Murdock Lakes 5 mi · Murdock Lakes 6 mi
See how Ratdam 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: Cariboo Regional District fishing maps (445 charts). Browse all British Columbia fishing maps. 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.