Juicy stuff, for all you fish science and salmon management geeks out there.
Oregon coastal Chinook are categorized by ODFW into two Species Management Units,the Coastal and Rogue SMU>
These SMUs are further divided into roughly 28 populations of fall run fish, and only nine historical populations of spring run fish (at least two are currently thought to be extinct).
Spring chinook salmon are far less widely distributed than fall run fish, but are not nearly as rare as native runs of summer steelhead in Oregon coastal rivers.
Anyone wonder why spring chinook might be more common than summer steelhead?