Ice Harbor Lock and Dam is a hydroelectric, concrete gravity run-of-the-river dam on the Snake River in Walla Walla and Franklin counties in the U.S. state of Washington. The dam is located 8 miles (13 km) northeast of the town of Burbank and 12 miles (19 km) east of Pasco, river mile 9.7. Its name comes from a tiny bay in the river where boats once tied up to wait for upstream ice-jams to break up.
Construction began in June 1955. The main structure and three generators were completed in 1961, with an additional three generators finished in 1976. Generating capacity is 603 megawatts, with an overload capacity of 693 MW. The spillway has ten gates and is 590 feet (180 m) long.
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