Buoy 10 Salmon Fishing from Ilwaco: Techniques, Timing & Tips

The Most Famous Salmon Fishery in the Northwest

The Buoy 10 fishery at the mouth of the Columbia River is a phenomenon without equal in Pacific Northwest salmon fishing. Every August, massive runs of fall Chinook and coho salmon funnel through a relatively narrow corridor between the Columbia River bar and the Astoria-Megler Bridge, creating the most concentrated salmon fishing opportunity on the West Coast. Ilwaco sits on the north side of this corridor, putting Washington anglers within minutes of the prime trolling lanes.

Understanding the Buoy 10 Fishery

Buoy 10 is a physical navigation marker near the mouth of the Columbia. The fishery named after it encompasses the area from the river mouth upstream approximately 10 miles. During peak season (late July through September), millions of salmon pass through this zone on their way to spawning grounds in the Columbia Basin, Snake River, and hundreds of tributaries. The concentration of fish in this relatively small area creates catch rates that can be spectacular — limits of bright, ocean-fresh salmon are common on good days.

Chinook vs. Coho at Buoy 10

Proven Buoy 10 Techniques

Trolling Herring

The standard Buoy 10 technique is trolling whole or plug-cut herring behind a large rotating flasher. The flasher (typically 11 inches, in chrome, chartreuse, or UV finishes) creates flash and vibration that attracts salmon from a distance. A 24- to 42-inch leader of 25- to 40-pound monofilament connects the flasher to a tandem hook setup through the herring. Plug-cutting the herring at an angle creates a tight, slow spiral that mimics wounded baitfish. Trolling speed runs 2.0 to 2.8 mph, with adjustments based on current and tide.

Trolling Spinners

Spinner rigs are extremely productive at Buoy 10, especially in the off-colored water common in the lower Columbia. A large Colorado blade (size 5 or 6) ahead of a yarn body tipped with herring, sardine, or shrimp produces powerful vibration and flash. Spinners excel when visibility is under 3 feet, attracting salmon by vibration alone. Run spinner rigs near the bottom in the deeper channels where Chinook hold.

Trolling Hoochies and Flies

For coho, rigging hoochies (small plastic squid imitations) or trolling flies behind a flasher is highly effective. Coho tend to run higher in the water column than Chinook, so lighter weights or shallower diver settings are appropriate. Green, blue, and purple hoochie colors work well for coho at Buoy 10.

Tide Strategy

Tidal influence is the single most important factor in Buoy 10 salmon fishing. The incoming (flood) tide pushes salmon upriver and concentrates them in predictable areas along the channel edges and near structure. Most experienced Buoy 10 anglers plan their fishing around the flood tide, starting their trolling passes as the tide changes from ebb to flood. The two hours before and after the tide change often produce the best action. During the outgoing tide, salmon tend to scatter and hold deeper, making them harder to target.

Navigating the Fleet

Buoy 10 during peak season can have 500 or more boats fishing the same general area. Navigating this fleet safely requires constant vigilance, proper trolling etiquette, and clear communication. Standard practice is to troll in organized patterns with the current flow, maintaining consistent speed and direction. Cutting across other trolling lanes, stopping suddenly, or trolling against the traffic flow creates dangerous situations. Charter captains handle fleet navigation expertly — first-time Buoy 10 visitors are strongly advised to fish with an experienced captain.

"Buoy 10 isn't for the faint of heart. Five hundred boats, strong current, and the bar rumbling in the background. But when a 30-pound king slams your herring and your rod doubles over with four other boats watching — that's a moment you'll replay in your head for years." — Ilwaco salmon guide

Tackle Recommendations

• Rod: 8'6" to 9'6" medium-heavy trolling rod rated for 15-30 lb line
• Reel: Level-wind conventional with line counter and smooth drag
• Line: 50-65 lb braid with 30 lb mono topshot, or straight 25-30 lb mono
• Leader: 25-40 lb mono, 24-42 inches behind flasher
• Weight: 4-10 oz cannonball sinker on slider, adjusted for current
• Flashers: 11-inch rotating flashers in chrome, chartreuse, and UV finishes
• Bait: Blue-label or green-label herring (premium grade), plug-cut

Regulations at Buoy 10

The Buoy 10 fishery is jointly managed by WDFW and ODFW. Regulations can be complex and change rapidly during the season based on run size estimates and harvest rates. Key points include daily bag limits (typically 2 adult salmon), mark-selective requirements (only hatchery-marked fish with clipped adipose fins may be retained for Chinook in many seasons), and species-specific restrictions. Emergency closures can occur with less than 48 hours' notice. Check both WDFW and ODFW websites the day before your trip for the most current regulations.

Tips for Success

Book your Ilwaco charter well in advance — the best dates in August fill up by spring. Arrive the evening before and check in with your captain for any last-minute regulation changes. Bring warm, waterproof layers regardless of the forecast — the Columbia River mouth generates its own weather with fog, wind, and spray. If you're fishing from a private boat, study the bar conditions and fleet protocols before your first trip, or better yet, hire a guide for your initial outing to learn the layout.