Webportland district publishes the fish counts taken at the dams in annual fish passage reports, as daily, monthly, and yearly count totals of fish migrating upstream through the. Ten year average counts for american shad, steelhead and chinook and sockeye salmon at. It is the seventh lowest. Webmay 11, 2022 · stock status. The coho salmon population was 96%. Webjun 1, 2021 · bonneville dam spring chinook counts. The effects of fish run numbers. There are many ways to measure the success or failure of managing natural resources. In the case of anadromous fisheries many claim to have superior scientific knowledge.