Wenatchee (wĬnăch´ē), city (1990 pop. 21,756), seat of Chelan co., central Wash., on the Columbia River in the foothills of the Cascade Range; inc. 1892. It is a resort and a commercial center in a fertile fruit-growing valley famous for its apples. Wenatchee's industries produce processed foods, plastics, consumer goods, sportswear, and conveyors. In the city are a horticulture experiment station and a museum containing Native American artifacts. Nearby Rock Island Dam supplies Wenatchee with power.