Ice Harbor Dam, Hydroelectric gravity dam in Walla Walla County, US.
Ice Harbor Dam spans 860 meters across the Snake River, generating 603 megawatts of power through six turbines while maintaining water levels for navigation.
The U.S. Army Corps of Engineers began construction in 1956, completing the main structure with three generators in 1961 and adding three more by 1976.
The dam's name originates from a small bay where vessels waited during winter months for upstream ice formations to dissipate.
The visitor center on the south bank presents exhibits about dam operations and includes a viewing room for observing migrating fish through the ladder system.
The facility recorded Washington state's highest temperature of 118°F on August 5, 1961, demonstrating the extreme climate conditions in the region.
Location: Walla Walla County
Inception: 1956
Length: 860 m
GPS coordinates: 46.24960,-118.88000
Latest update: May 20, 2025 11:13
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