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24 km of the Siuslaw River navigation corridor, with channel depths from USACE hydrographic survey. The river tops out around 55 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. Every species below gets its seasonal read from the same numbers driving the chart.
Traced from the shoreline, Siuslaw River runs 3,072 acres with 39.6 miles of edge. A development index of 5.1 means a maze of bays and points: far more casting targets than a round bowl of the same size. Roughly 70% of the water is 15 ft or less, the band where the food chain lives. Figure 14.1 mi of water from one end to the other, 4.2 mi at the beam. The nearest mapped water is Clear Lake, 5 mi to the northwest.
Spring puts rainbow trout in skinny water — 5 to 20 ft is the zone. Warm water sends them out to 8 to 30 ft; cold water stacks them in 8 to 40 ft. Current seam (mile 2.5) is the standout, a current seam at roughly 15 ft, rated prime for spring rainbow trout. Plan around early morning and the evening in the warm months. A dodger + spoon (deep troll) or a flutter spoon covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Current seam (mile 2.5) (15 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Current seam (mile 2.5) (15 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Current seam (mile 2.5) (15 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Current seam (mile 2.5) (15 ft) | Jigging spoon, Tube jig (white) |
Come spring, look for cutthroat trout tight to the bank in 3 to 15 ft. They move out to 10 to 35 ft in summer and finish the year down in 10 to 40 ft. If you only fish one area, make it Current seam (mile 2.5): a current seam around 15 ft that scores prime in spring. Best bite is early morning and the evening. A trolled spoon (small) or an inline spinner is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 15 ft | dawn & dusk | Current seam (mile 2.5) (15 ft) | Inline spinner (silver/gold), Small spoon |
| Summer | 10 to 35 ft | dawn & dusk | Current seam (mile 2.5) (15 ft) | Trolled spoon (small), Inline spinner |
| Fall | 5 to 25 ft | dawn & dusk | Current seam (mile 2.5) (15 ft) | Casting spoon, Inline spinner |
| Winter | 10 to 40 ft | dawn | Current seam (mile 2.5) (15 ft) | Small jigging spoon, Marabou jig |
In spring, chinook salmon run shallow here, mostly 5 to 40 ft. Summer pushes them deeper, 17 to 55 ft, and winter fish settle into 17 to 55 ft. Current seam (mile 2.5) is the standout, a current seam at roughly 15 ft, rated prime for spring chinook salmon. Time it for early morning and the evening. You won't need more than a flasher + fly (green/white) or a magnum spoon on downrigger most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 40 ft | dawn & dusk | Current seam (mile 2.5) (15 ft) | Trolled spoon (orange/gold), Stickbait off planer boards |
| Summer | 17 to 55 ft | dawn & dusk | Current seam (mile 4.4) (17 ft) | Flasher + fly (green/white), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dawn & dusk | Current seam (mile 2.5) (15 ft) | J-plug (glow), Flasher + fly |
| Winter | 17 to 55 ft | midday | Current seam (mile 4.4) (17 ft) | Small spoon on a slow troll, Stickbait deep |
Count 10 structure marks on this chart. The deepest, Outside-bend hole (mile 15.5), sits near 31 ft.
Season dates, license requirements, and size and bag limits for Oregon waters are set by the Oregon Department of Fish and Wildlife — and special regulations can apply to Siuslaw River specifically, so confirm the current rules before you fish.
Check the official Oregon fishing regulations →
Siuslaw River is about 55 ft (17 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, cutthroat trout, chinook salmon on Siuslaw River. 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.
Current seam (mile 2.5) is the top-rated area: a current seam in about 15 ft of water that rates prime for rainbow trout in spring. The map above holds the full rated-spot list for every 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 Siuslaw River is regulated by the Oregon Department of Fish and Wildlife. Check the official Oregon regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Clear Lake 5 mi · Cleawox Lake 7 mi · Lake Edna 27 mi · Eel Lake 27 mi · Loon Lake 29 mi · Yaquina River 42 mi · Floras Lake 80 mi · McKenzie River 82 mi · Cougar Reservoir 88 mi · Waldo Lake 99 mi · Torrey Lake 100 mi · Charlton Lake 102 mi
See how Siuslaw River stacks up: best rainbow trout lakes in Oregon
Browse all Oregon 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.