Snake River Shad, Walleye And Prawns, And The ‘Invasional Meltdown Hypothesis’

Up until recently, nobody could really say for sure whether the gazillions of American shad running up the Columbia River were having any impact on salmon and steelhead, either directly or indirectly. That may be changing.
SW WA, Lower Columbia, Lower Willamette Fishing Report (6-1-26)

Late May 2026 spring Chinook, steelhead, sturgeon and shad catch stats for the Lower Columbia, select Southwest Washington tributaries and the lower Willamette River.