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58-acre lake near Okanogan County. The lake tops out around 65 ft. The depth chart is built from real state fisheries GPS surveys, so the humps, channels and drop-offs you see are measured, not guessed. The rest of this page walks each species through its year, using the map's own scoring.
The drawn water covers 58 acres wrapped in 1.1 miles of bank. Nearly circular (index 1.1), so the story is the bottom, not the bank. About 28% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. The basin spans about 0.4 mi end to end and 0.3 mi across at its widest. Okanogan County claims this one. Its nearest charted neighbour, Patterson Lake, is 2 mi to the west.
When the water first warms, rainbow trout slide up into 5 to 20 ft. Summer is an 8 to 30 ft game here, winter an 8 to 40 ft one. Start at Break off the point. It's a drop-off holding about 34 ft of water and rates prime come winter. The feeding windows run early morning and the evening. Keep a dodger + spoon (deep troll) or a flutter spoon rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Main-lake point (5 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Break off the point (34 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Break off the point (34 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Break off the point (34 ft) | Jigging spoon, Tube jig (white) |
Big Twin Lake carries 5 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 65 ft down.
Access data: Washington WDFW — Water Access Sites. Confirm conditions and fees locally before you launch.
Season dates, license requirements, and size and bag limits for Washington waters are set by the Washington Department of Fish and Wildlife — and special regulations can apply to Big Twin Lake specifically, so confirm the current rules before you fish.
Check the official Washington fishing regulations →
Big Twin Lake is about 65 ft (20 m) deep at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
Anglers target rainbow trout on Big Twin Lake.
Break off the point is the top-rated area: a drop-off in about 34 ft of water that rates prime for rainbow trout in winter. 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 Big Twin Lake is regulated by the Washington Department of Fish and Wildlife. Check the official Washington regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Patterson Lake 2 mi · Methow River 3 mi · Pearrygin Lake 3 mi · Davis Lake 3 mi · Conconully Reservoir 21 mi · Rainy Lake 25 mi · Fish Lake 26 mi · Green Lake 26 mi · Lake Chelan 26 mi · Blue Lake 28 mi · Blue Lake 28 mi · Alta Lake 32 mi
See how Big Twin Lake stacks up: best rainbow trout lakes in Washington
More water nearby: Okanogan County fishing maps (21 charts). Browse all Washington fishing maps or see every water on DepthScout. Bathymetry credit: state fisheries survey programs. 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.