Lamprey passage systems are in use seasonally. The Willamette Falls fish ladder was not operational on the following dates: PST each day from April 1 through Oct. Lamprey is the combined count from the fish counting windows at Bonneville, reported daily. Here you can find adult passage data for salmon and steelhead, check on adult passage Pit Tag detections or visit the Fishermen's Links webpage for links to state fish and wildlife agencies, fishing forums and much more. April 1 was the start of the fish passage season.
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DART Adult Passage Daily Counts for All Species
The ten year averages are calculated by DART for each calendar day of data at each project. It takes most of the day to accurately review one day of fish passage on tape when the counts are high. February 1, - February 28, The Steelhead parameter includes both hatchery and wild counts. So where zeros appear across all rows, the data should be considered as "not yet available. Prior to wild steelhead data was not published on a daily basis. February 15, through April 7, and May 3, through June 5,