{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Oregon Water Science Center", "hasEmail": "mailto:gs-w-or_sciencebase@usgs.gov"}, "description": "This feature class represents inundated area for the Coast Fork of the Willamette River, \nthe Row River and Silk Creek (west of Cottage Grove, OR) for eight different flows at the \ngage Willamette River at Goshen, OR (USGS 14157500). The flows are 12,000; 15,000; \n21,450; 27,900; 33,900; 39,900; 46,800 and 62,300 cubic feet per second (cfs). These \nflows correspond to gage heights of 11.8, 13.2, 15.1, 16.3, 17.2, 17.9, 18.6 and 19.8 feet, \nrespectively. The domain of the model is as follows: Row River from Dorena dam to the \nconfluence with the Coast Fork; Coast Fork from Cottage Grove dam to the confluence \nwith the Middle Fork; Silk Creek from River Mile 1.7 to the confluence with the Coast Fork. \nThe basis for these features is the Willamette Flood Insurance Study \u2013 Phase One (2013). \nThe hydraulics and hydrology for the FIS were reused in the production of these polygons; \nthe reports and information associated with the FIS are applicable to this product. The \nDigital Elevation Model (DEM) utilized for the Willamette FIS submittal was produced \nby combining multiple overlapping topographic surveys for the Middle Fork and Coast \nFork of the Willamette River. This DEM was created from four sources: LiDAR of the \nSpringfield area that was flown in 2008, LiDAR of Silk Creek that was flown in 2011, \nLiDAR of Fall Creek that was flown in 2012, and photogrammetry of the Middle Fork \nand Coast Fork of the Willamette River that was flown in 2004. In areas where no \nhigh-resolution elevation data were available, USGS National Elevation Dataset (NED) \ndata were used to supplement the DEM. The shapefiles Hi_Res_Extents.shp and \nLow_Res_Extents.shp define the limits of these areas. The horizontal datum of the \nDEM is NAD 1983 State Plane-Oregon South HARN with units of International Feet \n(NAD83). The vertical datum of the elevation model is NAVD 1988 with units of \ninternational feet (NAVD-88). In addition, some areas show surveyed bathymetry \nwithin the channel. These can be noted by the sharp increase in apparent depth, \ncreating a stripe across the depth grid when compared to the LiDAR data, which \nrepresents the water surface elevation at the time of the aerial data collection. \nBridge decks are generally removed from DEMs as standard practice. Therefore, \nthese features may be shown as inundated when they are not. An effort to clip \nflood extents on bridge decks was made, but judgement should be used when \nestimating the usefulness of a bridge during flood flow. Comparing the bridge to \nthe surrounding ground can be more informative in this respect than simply \nlooking at the bridge itself. The features and depth grids stop as the Coast Fork \napproaches the Middle Fork on the northern end of the reach.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9KGKO8B", "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.3ca5cbbe-cffc-4e8e-b0c1-7048d7a21d79.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_3ca5cbbe-cffc-4e8e-b0c1-7048d7a21d79", "keyword": ["Coast Fork Willamette River", "Creswell Oregon", "Goshen Oregon", "Oregon", "USGS:3ca5cbbe-cffc-4e8e-b0c1-7048d7a21d79", "Willamette Valley", "elevation", "environment", "flood", "flood-inundation maps", "flooded area", "geoscientificInformation", "geospatial analysis", "high-water marks", "inlandWaters", "river", "stream"], "modified": "2020-11-17T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-123.015874187, 43.914848452, -122.953980714, 44.006968105", "theme": ["geospatial"], "title": "SIR2016-5029_cfwgoshOR_breach: Flood-Inundation Maps for the Coast Fork Willamette River from Creswell, Oregon to Goshen, Oregon (Area of Uncertainty)"}