Steelhead Counts - Bonneville/Lower Granite Dams

2017 Steelhead Count
From July 1 to December 31

To view winter passage at Bonneville Dam go to: Corps of Engineers Fish Reporting Site
Dam Date of Count Daily Count Total to Date
in 2017
Total to Date
5 Year Average
Total Count to Date
Bonneville September 24 1,331 99,587 151,222 216,796
Lower Granite September 24 1,630 8,871 28,173 37,018
  • Counts include wild and hatchery origin fish. Most steelhead bound for Idaho cross Bonneville Dam between July 1 and October 31.
  • 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 weekly during the counting season.
Steelhead count at Bonneville Dam
Steelhead count at Lower Granite Dam