Salmon Habitat Use of Tidal-fluvial Habitats of the Columbia River Estuary, 2010-2013. Final Report Curtis Roegner, 1 Daniel Bottom, 1 Antonio Baptista, 2 Lance Campbell, 3 Pascal Goertler, 4 Susan Hinton, 1 Regan McNatt, 1 Charles Simenstad, 4 David Teel, 1 and Kurt Fresh 1 1 Fish Ecology and Conservation Biology Divisions, Northwest Fisheries Science Center National Marine Fisheries Service, National Oceanographic and Atmospheric Administration 2725 Montlake Blvd. East Seattle, Washington 98112-2097 2 Oregon Health and Science University 3181 SW Sam Jackson Park Road Portland, Oregon 97239-3098 3 Washington Department of Fish and Wildlife 1111 Washington Street SE Olympia, Washington 98501 4 School of Aquatic and Fisheries Sciences, University of Washington 1122 NE Boat St Seattle, WA 98105 for Northwestern Division, Portland District U.S. Army Corps of Engineers P.O. Box 2946 Portland, Oregon 97208-2946 April 2015