{"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 square \nkilometers of northwestern Oregon and drain to the Pacific Ocean. The Tillamook, Trask, Wilson, Kilchis, \nand Miami Rivers flow into Tillamook Bay near the towns of Tillamook and Garibaldi. The Wilson and \nTrask River basins cover the largest areas (500 and 451 square kilometers, respectively) whereas the \nTillamook and Kilchis Rivers encompass similar sized areas (156 and 169 square kilometers, respectively) \nand the Miami River the smallest area (94 square kilometers). In cooperation with the U.S. Army Corps of \nEngineers, the U.S. Geological Survey completed a reconnaissance-level assessment of channel condition \nand bed-material transport relevant to the permitting of in-stream gravel extraction along the the major \nalluvial portions of six river systems, including the lowermost 14.1 km of the Tillamook River, 16.3 km of \nthe Trask River, 15.2 km of the Wilson River, 7.8 km of the Kilchis River, 11.6 km of the Miami River, \nand 31.4 km of the Nehalem River. To support these analyses, digital channel maps were produced to \ndepict channel and floodplain conditions in the Tillamook Bay sub-basins and Nehalem River basin from \ndifferent time periods. GIS layers defining the wetted channel and bar features and channel centerline in \nthe study area were developed for four time periods: 1939, 1967, 2005, and 2009. For this project, the \nactive channel was defined as area typically inundated during annual high flows, and includes the low-flow \nchannel as well as side channels, islands, and channel-flanking gravel bars. The wetted channel and bar \nfeature datasets were developed by digitizing from aerial photographs. Aerial photographs from 1939 and \n1967 were scanned, rectified, and mosaicked for this project (See metadata for each photograph set for \nmore information on the rectification process and resolution of each dataset). Digital orthophotographs \nfrom 2005 and 2009 are publicly available.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9KEL71H", "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.e0f42071-8286-4cef-a89b-4a3d9608954b.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_e0f42071-8286-4cef-a89b-4a3d9608954b", "keyword": ["Kilchis River", "Miami River", "Nehalem Bay", "Nehalem River", "Oregon Coast Range", "Tillamook Bay", "Tillamook County", "Tillamook River", "Trask River", "USGS:e0f42071-8286-4cef-a89b-4a3d9608954b", "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": "-123.893339, 45.395119, -123.723945, 45.620922", "theme": ["geospatial"], "title": "Channel centerline for the Tillamook, Trask, Wilson, Kilchis, and Miami Rivers, Oregon in 1939"}