Davenport is centrally located in the northern wheat belt of the Columbia Basin, where dryland wheat farming on the hills not washed away in the great Missoula Floods some 14,000 years ago, is critical to the agricultural economy of the region. Davenport Union Warehouse and Odessa Union Warehouse operate multiple elevators of varying age and design on the southern part of the city. A few of these structures date to the early days of the city. Davenport still serves as a central collection point for wheat, with most of it shipped out by truck or railcar. While most of the wheat goes to export, some of it does find its way to the ADM flour mills in Spokane and Cheney. Locally grown barley also finds its way to various west coast breweries and other users.