Ice Harbor Lock & Dam

Concrete gravity, run-of-the-river dam constructed between 1955 and 1962


Ice Harbor Dam

Photo taken by Richard Doody in 2007



Ice Harbor Dam spans the Snake River 10 miles upstream of its confluence with the Columbia between Walla Walla and Franklin counties. The 100 foot high, 2,822 foot long concrete gravity, run-of-the-river structure houses a six turbine powerhouse which has a maximum generating capacity of 693 MWe, a navigation lock and fish ladder. The upstream reservoir, Lake Sacajawea, extends for 32 miles to the base of Lower Monumental Dam. Construction began in 1955 and was completed in 1962. Ice Harbor Dam is operated by the U.S. Army Corps of Engineers, Walla Walla District.

Update Log 

  • December 1, 2018: New photos from Richard Doody
  • December 1, 2018: Added by Richard Doody


  • Richard Doody