2009 Steelhead Count

Bonneville / Lower Granite Dams

Steelhead counts ended in December 15, 2008 and are scheduled to resume in March, 2009 at Lower Granite dam. Steelhead currently passing Bonneville are primarily winter run fish that spawn in tributaries downstream of the Snake River. Steelhead bound for Idaho have already passed Bonneville Dam.

Counts include both hatchery and wild origin steelhead.
Dam	Date of Count	Daily Count	Total Count to Date - 2008	Total Count to Date - 2007	Average of Recent 5 Years
Bonneville	December 13	30	353,342	318,431	325,427
Lower Granite	December 15	55	167,631	146,370	148,867

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.