Salmon & Steelhead Recovery Tracker

Upper Willamette (Stratum)

The Upper Willamette stratum includes Willamette River watersheds in Oregon upstream of Willamette Falls, including the Clackamas River. There are seven recognized populations of spring Chinook in the Upper Willamette ESU, all of which are considered to be functionally independent. Data are currently available in the Clackamas, North Santiam, South Santiam, McKenzie and Middle Fork Willamette Rivers.

Oncorhynchus tshawytscha