Woodson is an unincorporated community in Columbia County, Oregon, United States. It is located on U.S. Route 30 seven miles west of Clatskanie and three miles east of Westport, on Westport Slough, a tributary of the Columbia River. In December 2007, the debris overflow from the flooding of Eilersten Creek caused evacuations and mud co…Woodson is an unincorporated community in Columbia County, Oregon, United States. It is located on U.S. Route 30 seven miles west of Clatskanie and three miles east of Westport, on Westport Slough, a tributary of the Columbia River. In December 2007, the debris overflow from the flooding of Eilersten Creek caused evacuations and mud cover on Woodson Road north of the highway.