These grain elevators in Umatilla replaced elevators removed for the John Day inundation. As the Columbia turned into a series of slackwater lakes through dam building, agricultural development expanded. The amount of exported wheat increased annually. Larger barges can now hold an average of 3,000 tons of wheat or 875,000 gallons of gasoline for export. Refrigerated barges, with their own electric generators, carry massive amounts of frozen potato products for MacDonalds Corporation as far away as Saipan. Photo by Donna Sinclair