{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Mackenzie Keith", "hasEmail": "mailto:mkeith@usgs.gov"}, "description": "The Tillamook Bay subbasins and Nehalem River basins encompass 1,369 and 2,207 respective \nsquare kilometers of northwestern Oregon and drain to the Pacific Ocean. The Tillamook, Trask, \nWilson, Kilchis, and Miami Rivers flow into Tillamook Bay near the towns of Tillamook and \nGaribaldi. The Wilson and Trask River basins cover the largest areas (500 and 451 square \nkilometers, respectively) whereas the Tillamook and Kilchis Rivers encompass similar sized \nareas (156 and 169 square kilometers, respectively) and the Miami River the smallest area \n(94 square kilometers). In cooperation with the U.S. Army Corps of Engineers, the U.S. \nGeological Survey completed a reconnaissance-level assessment of channel condition and \nbed-material transport relevant to the permitting of in-stream gravel extraction along the the \nmajor alluvial portions of six river systems, including the lowermost 14.1 km of the Tillamook \nRiver, 16.3 km of the Trask River, 15.2 km of the Wilson River, 7.8 km of the Kilchis River, \n11.6 km of the Miami River, and 31.4 km of the Nehalem River. To support these analyses, \ndigital channel maps were produced to depict channel and floodplain conditions in the Tillamook \nBay sub-basins and Nehalem River basin from different time periods. GIS layers defining the \nwetted channel and bar features and channel centerline in the study area were developed for \nfour time periods: 1939, 1967, 2005, and 2009. For this project, the active channel was defined \nas area typically inundated during annual high flows, and includes the low-flow channel as well \nas side channels, islands, and channel-flanking gravel bars. The wetted channel and bar feature \ndatasets were developed by digitizing from aerial photographs. Aerial photographs from 1939 \nand 1967 were scanned, rectified, and mosaicked for this project (See metadata for each \nphotograph set for more information on the rectification process and resolution of each dataset). \nDigital orthophotographs from 2005 and 2009 are publicly available.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9HW8782", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}, {"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.a3417b1f-6581-4d9e-a731-9cbc3d378fed.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_a3417b1f-6581-4d9e-a731-9cbc3d378fed", "keyword": ["Kilchis River", "Miami River", "Nehalem Bay", "Nehalem River", "Oregon Coast Range", "Tillamook Bay", "Tillamook County", "Tillamook River", "Trask River", "USGS:a3417b1f-6581-4d9e-a731-9cbc3d378fed", "Wilson River", "channel stability", "environment", "fluvial geomorphology", "geoscientificInformation", "historical channel change", "inlandWaters", "sediment transport"], "modified": "2020-11-17T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-123.893421, 45.395204, -123.723769, 45.620838", "theme": ["geospatial"], "title": "Wetted channel and bar features for the Tillamook, Trask, Wilson, Kilchis, and Miami Rivers, Oregon in 2005"}