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Portland Harbor Oregon Subyearling Chinook Growth 04-17-2018 to 09-14-2018 (NCEI Accession 0316117)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: August 03, 2026 at 05:27 AM | Dataset Last Updated: June 30, 2026 at 12:00 AM
The industrial waterway in Portland Harbor, Oregon, is a migration corridor for a distinct population segment of Chinook Salmon (Upper Willamette River) currently protected by the U.S. Endangered Species Act. Juveniles are exposed to a suite of contaminants during outmigration including legacy persistent organic pollutants (POPs), polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs), dichlorodiphenyltrichloroethanes (DDTs), and tributyltin (TBT). As part of a Natural Resource Damage Assessment (NRDA), the National Oceanic and Atmospheric Administration (NOAA) collected natural origin subyearling Chinook salmon from sites in and around the industrial harbor to evaluate growth (otolith microstructural analysis) in relation to measured chemical concentrations in tissue.

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