ESA

In 2005, fishery co-managers in U.S. v Oregon (Columbia River Treaty Tribes, WDFW, ODFW, IDFG, NMFS, and USFWS) received new PIT tag data that revealed CLEAR SEPARATION in migration timing between the ESA-listed Snake River summer chinook and the unlisted mid-Columbia summer chinook
It was concluded in the biological “Status Review of mid-Columbia River summer Chinook” that summer chinook are not a species or Evolutionary Significant Unit (ESU) as defined by the U.S. Endangered Species Act (ESA). Rather, they are part of a larger ESU that includes all late-run (summer and fall), ocean-type Chinook from the mainstem Columbia River and its tribuataries (excluding the Snake River) between Chief Joseph and McNary Dams. Also, that this larger ESU is not likely to become endangered in the foreseeable future and does not warrant listing as a threatened or endangered species (Waknitz et al. 1995)

In 2005, fishery co-managers in U.S. v Oregon (Columbia River Treaty Tribes, WDFW, ODFW, IDFG, NMFS, and USFWS) received new PIT tag data that revealed CLEAR SEPARATION in migration timing between the ESA-listed Snake River summer chinook and the unlisted mid-Columbia summer chinook