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Coho salmonRetention openGut · Washington
Siwash Slough
48.56°N · 122.49°W · Gut · Northern Inland Waters Including The San Juan Islands
Species here · tap to switch
Best score today · 11 AM · Chinook salmon
- Now
- 664 AM PDT
- Best window
- 11 AM-6 PMFlood tide
- Tide now
- Ebbing5.2 ft ▼
Data from: NOAA CO-OPS + ECMWF + Open-Meteo Marine · Waterlands engine
Notify me when Siwash Slough scores 75+
Checked every morning against the 14-day forecast. Free by push and email.
14-day forecast
Best days to fish
24-hour conditions · rolling from now
Conditions · 4 AM · now
Tide & current
NOAA CO-OPS
96Tide: EbbingCurrent: 0.7 kn ebbWind & pressure
ECMWF
94Wind: 3 kt SEPressure: RisingWater temp & sky
Open-Meteo Marine
53Water temp: 60°F, warmLight: NightSolunar: Between periodsSeas: 0.2 ftSeason & habitat · Coho salmon
Species seasonality
83Season: PeakHabitat: Usable structureDepth: Out of rangeRegulations: Retention open
Current regulations
What you can keep here today
Marine Area 7 (San Juan Islands)
Coho salmon(hatchery-marked)
Retention open- Daily limit
- 2 salmon combined per day
- Possession
- Not published
- Size
- Not published
- Season
- Sep 1 to Sep 30, 2026
- Annual quota
- Not published
- Changes
- Closed from Oct 1
- Other
- Bellingham Bay has a separate daily limit through Sept. 30. Some bays, piers and creek mouths have separate rules or closures. Check the pamphlet. Barbless hooks required in Marine Areas 5 through 13. Season and limits as listed in WDFW's 2026-27 List of Agreed Fisheries. WDFW's adopted rule (WAC 220-313-060, WSR 26-13-052) sets the same rules for these dates.
From WDFW 2026-27 List of Agreed Fisheries (final), read Sep 13
Other species here
- Chinook salmon Catch & release (No retention)
- Chum salmon Catch & release (No retention)
- Lingcod Check regulations
- Pacific halibut Retention open (1 per day)
- Pink salmon Retention open (2 salmon combined per day)
- Rockfish Closed (No retention)
- Sockeye salmon Catch & release (No retention)
Source: WDFW · synced yesterday
Seasonality · 52-week view · this week ringed
When Coho salmon is best here
Peak season for Coho salmon · 1 more week at peak
- Peak
- Shoulder
- Off
- This week
Spot profile
Siwash Slough
- Depth
- Up to 1 ftNearest water
- Structure
- Channel · Inner · ProtectedChannel · flat bottom
- Season
- Peak seasonCoho salmon
NOAA NCEI DEM, sampled Sep 14 on a 3.4 m grid. Depths are feet below NAVD 88, not chart datum (MLLW), so they can differ from a chart by a few feet. Not for navigation.
About this spot
Fishing Siwash Slough
Siwash Slough is a gut in Northern Inland Waters Including The San Juan Islands, Washington. Depth in the nearest water is up to 1 ft, with a flat bottom. Its profile reads channel, inner water and protected.
Waterlands scores 11 species here; the best right now are coho salmon, Chinook salmon and lingcod. It is peak season now for coho salmon and Chinook salmon, and shoulder season for lingcod, kelp greenling, surfperch and cabezon. Coho salmon peak from July through September. Chinook salmon peak from July through September. Lingcod peak from April through June.
Tackle & technique
- Coho salmon
- Coho feed in the top 30 to 50 feet along tide rips, kelp edges and bait schools, and often hit within a few feet of the surface. Troll faster than for Chinook, 2 to 4 mph, with a small flasher and hoochie, bucktail fly or herring, or cast spinners and flies from beaches near stream mouths as fish stage in late summer. The hour around a tide change is often the best window.
- Chinook salmon
- Chinook hold near bait off points, kelp edges and tide rips, usually suspended 20 to 120 feet down and deeper as the sun gets higher. Troll slowly, under 2 mph, with a flasher and herring, hoochie or spoon on a downrigger, or mooch a plug-cut herring at the depth where the sounder shows bait. Winter blackmouth and feeder kings sit within 10 feet of the bottom in 60 to 200 feet.
- Lingcod
- Lingcod ambush prey from rock outcrops, reef edges and kelp where current runs, most often in 30 to 300 feet, and males move shallow to guard nests in winter. Drift over the reef bouncing a lead-head swimbait or metal jig on the bottom, or fish herring or squid on a heavy leader, since their teeth cut light line. From jetties and rocky shore, work bait or jigs along the rocks on the incoming tide.
Nearby spots
Other spots within an easy run
- Boat Harbor69
Bay · 4.2 mi
Top: Coho salmonPeak season- Coho salmon 69
- Chinook salmon 66
- Kelp greenling 63
3 kt SEL 9:00 AM · 0.9 ftH 4:31 PM · 7.7 ft
- Samish Bay66
Bay · 2.7 mi
Top: Coho salmonPeak season- Coho salmon 66
- Chinook salmon 64
- Kelp greenling 57
3 kt SEL 9:00 AM · 0.9 ftH 4:31 PM · 7.7 ft
- Padilla Bay66
Bay · 3.5 mi
Top: Kelp greenlingShoulder season- Kelp greenling 66
- Chinook salmon 64
- Coho salmon 63
3 kt SEL 9:36 AM · 0.8 ftH 4:51 PM · 8.1 ft
- Levant Passage66
Bay · 3.8 mi
Top: Coho salmonPeak season- Coho salmon 66
- Chinook salmon 64
- Lingcod 64
3 kt SEL 9:00 AM · 0.9 ftH 4:31 PM · 7.7 ft
Scores and forecasts are for planning only and can be wrong. Conditions on the water change fast; check the marine forecast before you go. Regulations change during the season, so confirm limits and closures with WDFW before you keep a fish.
