The Wenatchee River is a river in the U.S. state of Washington, originating at Lake Wenatchee and flowing southeast for 53mi, emptying into the Columbia River immediately north of Wenatchee, Washington. On its way it passes the towns of Plain, Leavenworth, Peshastin, Dryden, Cashmere, Monitor, and Wenatchee, all within Chelan County. The river attracts kayaking and river rafting enthusiasts and tourism.Tributaries include the Chiwawa River, Nason Creek, Peshastin Creek, and Icicle Creek. Its drainage basin is 1333sqmi in area.HistoryHistorically the dividing line between Okanogan County and Kittitas County, the river has been in the center of Chelan County since the county's formation around 1899.