It is time for my weekly spring Chinook Salmon update (5/23/2023). So, let’s get right to it.
Don't let yesterday's drop (from 2,500 to 1,500 fish) in daily fish counts make you think Idaho's spring Chinook run over Bonneville Dam is complete (see figure below). The high, dirty water appears to be influencing fish passage at Bonneville Dam which has many thinking some Idaho-bound spring Chinook are being held up there and more are yet to come. We estimate that the migration of Idaho-bound spring Chinook Salmon past Bonneville Dam is around 90% complete.