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Filters Date Types (for Date Range) Types Map Service (1) OGC WFS Layer (1) OGC WMS Layer (1) OGC WMS Service (1) Contacts Jonathan A. Warrick Pacific Coastal and Marine Science Center Melissa M. Foley Natural Hazards U.S. Geological Survey U.S. Geological Survey - ScienceBase Categories Data (1) Tag Types Theme (1) Place (1) USGS Scientific Topic Keyword (1) Tag Schemes Geographic Names Information System (GNIS) (1) Marine Realms Information Bank (MRIB) Keywords (1) USGS Thesaurus (1) Data Categories for Marine Planning (1) Global Change Master Directory (GCMD) (1) ISO 19115 Topic Category (1) View Results as: JSON ATOM CSV

Characterization of seafloor photographs near the mouth of the Elwha River during the first two years of dam removal (2011-2013) We characterized seafloor sediment conditions near the mouth of the Elwha River from underwater photographs taken every four hours from September 2011 to December 2013. A digital camera was affixed to a tripod that was deployed in approximately 10 meters of water (Tripod location from September 2011 to April 2013: 48.15333, -123.55931; tripod location from April 2013 to December 2013: 48.15407, -123.55444). Each photograph was qualitatively characterized as one of six categories: (1) base, or no sediment; (2) low sediment; (3) medium sediment; (4) high sediment; (5) turbid; or (6) kelp. For base conditions, no sediment was present on the seafloor. Low sediment conditions were characterized by a light dusting of... Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Clallam County, Elwha River, Olympic Peninsula, Remote Sensing, State of Washington, All tags... Strait of Juan de Fuca, dam removal, oceans, photography, sediment, sedimentation, sedimentation, substrate, time series datasets, underwater photography, Fewer tags