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Idaho Fish and Game

Steelhead Dam Counts

Bonneville/Lower Granite Dams
2026 Adult Steelhead Count

Bonneville Dam

Jul 1 2026 - Nov 1 2026
Date Of Count Daily Adult Count Total to Date This Year Total to Date Last Year 5 Year Average To Date
Aug 02 1,185 26,946 72,465 46,081
Jul 1 2026 - Nov 1 2026

Lower Granite Dam

Jul 1 2026 - Nov 1 2026
Date Of Count Daily Adult Count Total to Date This Year Total to Date Last Year 5 Year Average To Date
Aug 02 54 2,202 5,328 3,940
Jul 1 2026 - Nov 1 2026
Information

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

  • Information on numbers of fish 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.