{"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 by \ncombining multiple overlapping topographic surveys for the Middle Fork and Coast Fork \nof the Willamette River. This DEM was created from four sources: LiDAR of the Springfield \narea that was flown in 2008, LiDAR of Silk Creek that was flown in 2011, LiDAR of Fall \nCreek that was flown in 2012, and photogrammetry of the Middle Fork and Coast Fork \nof the Willamette River that was flown in 2004. In areas where no high-resolution elevation \ndata were available, USGS National Elevation Dataset (NED) data were used to supplement \nthe DEM. The shapefiles Hi_Res_Extents.shp and Low_Res_Extents.shp define the limits of \nthese areas. The horizontal datum of the DEM is NAD 1983 State Plane-Oregon South HARN \nwith units of International Feet (NAD83). The vertical datum of the elevation model is NAVD 1988 \nwith units of international feet (NAVD-88). In addition, some areas show surveyed bathymetry \nwithin the channel. These can be noted by the sharp increase in apparent depth, creating a stripe \nacross the depth grid when compared to the LiDAR data, which represents the water surface \nelevation at the time of the aerial data collection. Bridge decks are generally removed from DEMs \nas standard practice. Therefore, these features may be shown as inundated when they are not. \nAn effort to clip flood 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 the surrounding \nground can be more informative in this respect than simply looking at the bridge itself. The \nfeatures and depth grids stop as the Coast Fork approaches the Middle Fork on the northern \nend of the reach.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9999OLR", "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.1bef5666-4538-4a4d-b396-7f4507d72413.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_1bef5666-4538-4a4d-b396-7f4507d72413", "keyword": ["Coast Fork Willamette River", "Creswell Oregon", "Goshen Oregon", "Oregon", "USGS:1bef5666-4538-4a4d-b396-7f4507d72413", "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: Flood-Inundation Maps for the Coast Fork Willamette River from Creswell, Oregon to Goshen, Oregon"}