Horn Rapids Dam (also known as Wanawish Dam) is a rock filled timber crib barrage dam on the Yakima River in Benton County Washington near the intersection of SR 240 and SR 225. The dam is not used for hydroelectric production rather to fill irrigation canals on either bank of the river. Permits for the dam were filed by the Yakima Irrigation and Improvement Company in 1889 and the original dam was completed in 1892.
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