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Big Soos Creek Fishing and Stocking

King County, Washington. The Washington Department of Fish and Wildlife lists 16 stockings here in the latest year of its data (Chinook Salmon, Coho Salmon and Steelhead), the most recent on Jul 21, 2026. Stocked in April and May in two or more years.

2026 Stocking

DateSpeciesFishSize
Jul 21, 2026Coho Salmon443,463Fingerling, 83.0 fish per pound
Jul 10, 2026Coho Salmon122,000Fingerling, 78.0 fish per pound
Jul 10, 2026Coho Salmon130,000Fingerling, 80.0 fish per pound
May 12, 2026Chinook Salmon499,592Zero, 76.0 fish per pound
May 12, 2026Chinook Salmon501,866Zero, 80.0 fish per pound
May 11, 2026Chinook Salmon36,000Zero, 75.0 fish per pound
May 11, 2026Chinook Salmon36,000Zero, 66.0 fish per pound
May 11, 2026Chinook Salmon36,000Zero, 65.0 fish per pound
May 11, 2026Chinook Salmon28,001Zero, 97.0 fish per pound
May 11, 2026Chinook Salmon36,000Zero, 77.0 fish per pound
May 11, 2026Chinook Salmon28,046Zero, 92.0 fish per pound
May 1, 2026Chinook Salmon282,381Zero, 78.0 fish per pound
Apr 15–16, 2026Steelhead49,979Smolt, 7.0 fish per pound
Apr 9, 2026Coho Salmon22,216Fingerling, 24.0 fish per pound
Apr 3, 2026Coho Salmon22,216Fingerling, 24.0 fish per pound
2026-02-25/2026-04-03Coho Salmon350Fry, 500.0 fish per pound

2025 Stocking

DateSpeciesFishSize
Jun 5, 2025Chinook Salmon270,554Zero, 98.0 fish per pound
Jun 5, 2025Chinook Salmon118,902Zero, 89.0 fish per pound
May 28, 2025Chinook Salmon50,198Zero, 98.0 fish per pound
May 23, 2025Chinook Salmon146,067Zero, 92.0 fish per pound
May 23, 2025Chinook Salmon420,805Zero, 95.0 fish per pound
May 23, 2025Chinook Salmon226,488Zero, 98.0 fish per pound
May 22, 2025Chinook Salmon51,080Zero, 97.0 fish per pound
May 22, 2025Chinook Salmon224,169Zero, 96.0 fish per pound
May 16, 2025Chinook Salmon50,538Zero, 104.0 fish per pound
May 16, 2025Chinook Salmon225,204Zero, 90.0 fish per pound
Apr 15, 2025Coho Salmon262,199Yearling, 17.0 fish per pound
Apr 15, 2025Steelhead49,978Smolt, 6.0 fish per pound
Apr 2, 2025Coho Salmon79Fry, 500.0 fish per pound

2024 Stocking

DateSpeciesFishSize
May 23, 2024Chinook Salmon493,714Zero, 94.0 fish per pound
May 23, 2024Chinook Salmon499,171Zero, 81.0 fish per pound
May 22, 2024Chinook Salmon67,466Zero, 93.0 fish per pound
May 21, 2024Chinook Salmon67,180Zero, 83.0 fish per pound
May 17, 2024Chinook Salmon248,122Zero, 80.0 fish per pound
May 17, 2024Chinook Salmon220,600Zero, 74.0 fish per pound
May 17, 2024Chinook Salmon204,549Zero, 81.0 fish per pound
Apr 22, 2024Coho Salmon30,220Fingerling, 21.0 fish per pound
Apr 18, 2024Coho Salmon80Fry, 500.0 fish per pound
Apr 15, 2024Steelhead49,986Smolt, 8.0 fish per pound
Apr 10, 2024Coho Salmon16,487Fingerling, 22.0 fish per pound
Apr 4, 2024Coho Salmon181Fry, 500.0 fish per pound

Other Stocked Waters in King County

About This Data

Every row comes from the stocking information published by the Washington Department of Fish and Wildlife, checked Nov 3, 2026. The agency lists this water as “BIG SOOS CR 09.0072”. Species and sizes are given as the agency names them; a dash means the agency does not say.

More for Washington Anglers

Stocking dates and places can change without notice; check with the agency before a trip. ReelTourney is not affiliated with the Washington Department of Fish and Wildlife.