Duwamish River Fish Stocking
King County, Washington · 1995–2023 on record
According to Washington fish & wildlife agency, Duwamish River was last stocked May 24, 2023 with Coho Salmon. Duwamish River has 5 stocking records on file, spanning 1995–2023, with about 65,541 fish stocked over that period.
Angler's Field Guide
Fishing Tips & Stocking Guide for Duwamish River
Practical advice on fish behavior, recommended tackle, and state regulations for anglers fishing in King County, Washington.
Post-Plant Behavior & Timing
Hatchery-raised fish are conditioned to pelleted feed and open raceways. Following a release into Duwamish River, they typically congregate in schools near public access points, boat ramps, or inlets for the first 24 to 48 hours while adjusting to natural water conditions.
Since Duwamish River was last stocked May 24, 2023, anglers visiting within 1 to 2 weeks of a reported event generally experience the highest activity before fish disperse into deeper cover.
State Regulations & Licensing
- •Fishing License: A valid Washington freshwater fishing license is required for anglers age 16 and older.Purchase Washington license online →
- •Official Rules & Limits: Bag limits, bait restrictions, and seasonal boundaries are set by Washington fish & wildlife agency.Official Washington regulations guidebook →
- •Ethical Conservation: Use barbless hooks and keep fish submerged in water during unhooking.Trout Thermal Advisory: When water temperatures rise above 68°F (20°C), released trout face severe mortality from thermal exhaustion. Target warmwater species or fish early in the morning when lakes and streams warm up.
Recommended Tackle & Presentations
Techniques tailored to the species stocked in Duwamish River:
Stocked Trout Tactics
Use light 4–6 lb monofilament or fluorocarbon line. Float scented dough bait (PowerBait) 12–18" off bottom using a sliding slip-sinker rig with a size 14–16 treble hook. For active casting, throw 1/16 to 1/8 oz inline spinners (Panther Martin, Rooster Tail) or small spoons (Kastmaster) along drop-offs.
Kokanee & Salmon Tactics
Troll small dodgers followed by micro-hoochies or wedding ring spinners tipped with shoepeg corn. Use downriggers or lead-core line to reach cooler thermocline depths (typically 20–50 ft in summer).
Coho Salmon Profile Tips
A popular fall target in Washington's rivers and marine waters.
Rainbow Trout Profile Tips
The most commonly targeted stocked trout in the country, taken on bait, spinners, and flies alike; a common first fish for new anglers.
Recommended Tackle for Duwamish River
Field-tested tackle and presentations matched to the species stocked here.
Berkley PowerBait Floating Trout Dough
Hatchery-raised trout are conditioned to pelleted scents; scented dough floated 12–18 inches off bottom consistently triggers strikes.
Panther Martin Classic Teardrop Inline Spinner
The heavy convex blade spins instantly upon retrieval, sending vibration through the water that triggers aggressive reaction bites along drop-offs.
Sliding Sinker & Treble Hook Rigging Kit
Sliding egg sinkers allow cautious trout to run with bait without feeling line drag, while size 14–16 treble hooks keep dough bait securely pinned.
Mack's Lure Classic Wedding Ring Spinner
A classic Western trolling lure designed to be tipped with shoepeg corn and run behind a dodger in deep thermoclines.
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Nearby stocked waters
Other stocked waters near Duwamish River, freshest activity first.
Lake Washington
8 miKing County · 4 species · 203 records
Last stocked May 2026
Lake Boren
7 miKing County · 1 species · 38 records
Last stocked May 2026
May Creek
5 miSnohomish County · 3 species · 23 records
Last stocked April 2026
Angle Lake
6 miKing County · 4 species · 130 records
Last stocked April 2026
May Creek
5 miKing County · 2 species · 23 records
Last stocked April 2026
Shingle Mill
9 miKitsap County · 3 species · 32 records
Last stocked April 2026
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Source |
|---|---|---|---|
| May 24, 2023 | Coho Salmon | 200 | Washington fish & wildlife agency |
| June 9, 2022 | Rainbow Trout | 191 | Washington fish & wildlife agency |
| February 19, 2007 | Coho Salmon | 35,000 | Washington fish & wildlife agency |
| March 1, 1999 | Coho Salmon | 30,000 | Washington fish & wildlife agency |
| June 1, 1995 | Chinook Salmon | 150 | Washington fish & wildlife agency |
The reporting agency did not include fish sizes for this water.
Frequently asked
When was Duwamish River last stocked?
According to Washington fish & wildlife agency, Duwamish River was last stocked May 24, 2023 with Coho Salmon.
What fish species are stocked in Duwamish River?
Duwamish River is stocked with Coho Salmon, Rainbow Trout, and Chinook Salmon.
How often is Duwamish River stocked?
Duwamish River is stocked intermittently — 5 recorded stockings between 1995 and 2023.
How many fish have been stocked in Duwamish River?
About 65,541 fish have been stocked in Duwamish River across 5 recorded events since 1995, per Washington fish & wildlife agency.
Do you need a fishing license to fish Duwamish River?
Yes, all anglers age 16 and older generally need a valid Washington freshwater fishing license. Always review current regulations from Washington fish & wildlife agency for site-specific rules, bag limits, or stamps.
How do you catch stocked trout in Duwamish River?
Freshly stocked trout in Duwamish River typically respond well to floating dough bait (such as PowerBait) floated 12–18 inches off bottom on light 4–6 lb leader, live nightcrawlers under a bobber, and small inline spinners or spoons retrieved along shorelines and drop-offs.