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Idaho Fish and Game

Steelhead Dam Counts

Bonneville/Lower Granite Dams
2023 Adult Steelhead Count

Bonneville Dam

From Jun 30 2023- Jun 30 2024
Date Of Count Daily Adult Count Total to Date This Year Total to Date Last Year 5 Year Average To Date
Apr 19 7 1,928 1,607 1,895

Lower Granite Dam

From Jun 30 2023 - June 30, 2024
Date Of Count Daily Adult Count Total to Date This Year Total to Date Last Year 5 Year Average To Date
Apr 19 13 1,405 2,105 2,086
Information

To view passage at Bonneville or Lower Granite Dam go to: Corps of Engineers Fish Reporting Site

  • Information on numbers of steelhead crossing the Columbia and Snake River dams is taken from data posted by the United States Army Corps of Engineers, and is updated during the counting season.
  • Counts include wild and hatchery origin fish.