Information and Data for Chum Salmon
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Chum salmon
Summer Chum Salmon Conservation Initiative (SCSCI) Report Series
Recreational Salmon Fishing


The WDFW uses an extensive assortment of numerical information to manage the various salmon species. The most important of these data sets are the numbers of adult salmon that return from the ocean and the numbers that subsequently escape to freshwater to spawn. Escapement and runsize data have been assembled into management data bases that are used for preseason forecasting and inseason management.

Chum salmon management data bases typically represent the runs entering inside waters (e.g., Puget Sound or the coastal bays and rivers), and as such they do not include those fish harvested in the ocean or outside of Washington waters. These data bases may also be missing some minor inside runsize components, such as sport catch or escapements to minor production streams, however, chum salmon management data bases typically represent 90% or more of the total adult return.

Annual chum salmon escapement and runsize tables (in retrievable spreadsheet form) are provided for the Puget Sound and Coastal regions. The estimates include regional totals for wild and hatchery chum salmon escapements and runsizes. Wild chum salmon are those fish actually produced by naturally spawning parents, and the hatchery fish are the result of artificial enhancement or recovery programs. The various data bases span different time periods, because they reflect the years that have the most reliable escapement and harvest information. Users of these data bases should be aware that the numbers do not represent all returning fish.

All management data bases are subject to future revision. WDFW and the co-managing Tribes are constantly upgrading escapement and catch estimates, and are attempting to develop acceptable estimates of missing runsize components. Management data bases are reviewed by the managers each year, and past values may be changed if better information becomes available. Users of these data bases should periodically check for changes.