{"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 Garibaldi. \nThe Wilson and Trask River basins cover the largest areas (500 and 451 square kilometers, \nrespectively) whereas the Tillamook and Kilchis Rivers encompass similar sized areas (156 and \n169 square kilometers, respectively) and the Miami River the smallest area (94 square kilometers). \nIn cooperation with the U.S. Army Corps of Engineers, the U.S. Geological Survey completed a \nreconnaissance-level assessment of channel condition and bed-material transport relevant to the \npermitting of in-stream gravel extraction along the the major alluvial portions of six river systems, \nincluding the lowermost 14.1 km of the Tillamook River, 16.3 km of the Trask River, 15.2 km of the \nWilson River, 7.8 km of the Kilchis River, 11.6 km of the Miami River, and 31.4 km of the Nehalem \nRiver. To support these analyses, digital channel maps were produced to depict channel and \nfloodplain conditions in the Tillamook Bay sub-basins and Nehalem River basin from different time \nperiods. GIS layers defining the wetted channel and bar features and channel centerline in the study \narea were developed for four time periods: 1939, 1967, 2005, and 2009. For this project, the active \nchannel 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 \nbar feature datasets were developed by digitizing from aerial photographs. Aerial photographs from \n1939 and 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/P9K51HRG", "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.c3bc487c-08b7-42fe-ae08-e1f7cc2f67ab.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_c3bc487c-08b7-42fe-ae08-e1f7cc2f67ab", "keyword": ["Kilchis River", "Miami River", "Nehalem Bay", "Nehalem River", "Oregon Coast Range", "Tillamook Bay", "Tillamook County", "Tillamook River", "Trask River", "USGS:c3bc487c-08b7-42fe-ae08-e1f7cc2f67ab", "Wilson River", "aerial photograph", "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": "-123.879579, 45.459712, -123.721311, 45.532640", "theme": ["geospatial"], "title": "Aerial photo mosaic of the Wilson and Kilchis Rivers, Tillamook basin, Oregon in 1939"}