 The Columbia Valley may be further divided regions near Leavenworth, the Wenatchee Valley and along the eastern foothills of the Cascade Mountains (in a region collectively called the Columbia Cascades) expected to seek federally designation.In 2012 the Ancient Lakes of the Columbia Valley AVA, located in the Columbia Valley was approved as an American Viticultural Area and contains more than 162,000 acres in total area and approximately 1,800 acres of currently planted vineyards.The Yakima Valley AVA was established in 1983 and is the oldest agricultural region in the state.