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.