The organization created and maintained these records to provide the information basis for federal, state and tribal recommendations for anadromous fish passage in the Federal Columbia River Hydro-electric System. This series contains records describing the migrating bull trout, lampreys, salmon, and steelhead in the Columbia River Basin, covering areas in the states of Idaho, Oregon, and Washington. This data and analysis includes adult migration, environmental conditions, hydrosystem operations, hatchery releases, and spawning and emergence for certain groups of anadromous fish.
This data comprises government records extracted from the Archival Research Catalog (ARC). See the ARC catalog entry for this series for more information on this data and how to order it.
