The Corps has developed a Draft IFR/EA to evaluate alternatives to enhance navigation in the lower Columbia River. The study area is found completely within the Columbia River and includes approximately 14 river miles starting at the Port of Longview anchorage area (RM 63) to Lower Martin Bar (RM 77). The project is needed to improve safety, reduce access restrictions, increase efficiency by maximizing capacity, and meet the navigation needs of the Columbia River system users.