{"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 \nand 169 square kilometers, respectively) and the Miami River the smallest area (94 square \nkilometers). In cooperation with the U.S. Army Corps of Engineers, the U.S. Geological Survey \ncompleted a reconnaissance-level assessment of channel condition and bed-material transport \nrelevant to the permitting of in-stream gravel extraction along the the major alluvial portions of \nsix river systems, including the lowermost 14.1 km of the Tillamook River, 16.3 km of the Trask \nRiver, 15.2 km of the Wilson River, 7.8 km of the Kilchis River, 11.6 km of the Miami River, and \n31.4 km of the Nehalem River. To support these analyses, digital channel maps were produced \nto depict channel and floodplain conditions in the Tillamook Bay sub-basins and Nehalem River \nbasin from different time periods. GIS layers defining the wetted channel and bar features and \nchannel centerline in the study area were developed for four time periods: 1939, 1967, 2005, \nand 2009. For this project, the active channel was defined as area typically inundated during \nannual high flows, and includes the low-flow channel as well as side channels, islands, and \nchannel-flanking gravel bars. The wetted channel and bar feature datasets were developed by \ndigitizing from aerial photographs. Aerial photographs from 1939 and 1967 were scanned, \nrectified, and mosaicked for this project (See metadata for each photograph set for more \ninformation 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/P9KR7PB7", "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.0a0a0bc9-d306-4430-8706-b3c608f6805b.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_0a0a0bc9-d306-4430-8706-b3c608f6805b", "keyword": ["Kilchis River", "Miami River", "Nehalem Bay", "Nehalem River", "Oregon Coast Range", "Tillamook Bay", "Tillamook County", "Tillamook River", "Trask River", "USGS:0a0a0bc9-d306-4430-8706-b3c608f6805b", "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": "-123.893350, 45.395248, -123.723904, 45.620807", "theme": ["geospatial"], "title": "Channel centerline for the Tillamook, Trask, Wilson, Kilchis, and Miami Rivers, Oregon in 2009"}