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Willapa Bay, Washington, is the focus of this 1995 benthic habitat dataset, which maps submerged aquatic vegetation (SAV) using 295 true-color aerial photographs. The Columbia River Estuary Study Taskforce (CREST) led the project, with field verification from Oregon State University and the Washington Department of Natural Resources. Data were digitized into GIS shapefiles following the Coastal Change Analysis Program (C-CAP) protocol.
Data is provided as GIS shapefiles (.shp, .shx, .prj, .dbf) with FGDC metadata. The listed 2026 update date may be a metadata system artifact, as the core data is from 1995.