This graph compares the current year, last year and ten year average counts and will not work until there is data for the site selected.
Summer Chinook are not counted at Willamette Falls Dam.
Shad are not counted at Willamette Falls, The Dalles, John Day, Lower Monumental, Little Goose, Rock Island, Rocky Reach and Wells Dams. Additionally, shad are typically not counted at any of the Corps dams after August 31 each year and shad are not counted at all Corps dams.
Wild steelhead are a subset of steelhead. Wild steelhead are counted separately from hatchery steelhead at Corps dams on the Columbia and Snake Rivers. Wild steelhead are identified as fish with an intact adipose fin. However, a small number of hatchery fish may not have had their adipose fin removed.
Page design last updated on: November 6, 2019