{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Nicholas M Enwright", "hasEmail": "mailto:enwrightn@usgs.gov"}, "description": "Vertical accuracy of elevation data in coastal environments is critical because small variations in elevation can affect an area\u2019s exposure to waves, tides, and storm-related flooding. Elevation data contractors typically quantify the vertical accuracy of digital elevation models (DEMs) developed using light detection and ranging data acquisition on a per-project basis to gauge whether the datasets meet quality and accuracy standards. To better understand the vertical accuracy of DEMs along the Gulf of Mexico and Atlantic coast, we collated over 5200 contractor points for this region that were collected for per-project-level analyses produced for assessing DEMs acquired for the U.S. Geological Survey\u2019s 3D Elevation Program. Upon pooling these data, we integrated attributes related to land cover from the National Oceanic and Atmospheric Administration's (NOAA) Coastal Change Assessment Program (C-CAP) 10 m BETA land cover product. Vegetative state, a derivative of land cover, was described as non-vegetated or vegetated. USGS Lidar Base Specification Quality Level (NGP, 2022), a derivative of point spacing, was obtained via the metadata of the elevation data, and regional classifiers were assigned based on dividing the coastal region using Everglades National Park and the North Carolina-Virginia border.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9DQM965", "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.64b8833ed34e70357a2b56a0.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_64b8833ed34e70357a2b56a0", "keyword": ["biota", "marsh ecosystems", "Florida", "Mississippi", "Texas", "Forested Wetland", "Emergent Wetland", "Delaware", "GPS measurement", "North Carolina", "Massachusetts", "Gulf of Mexico", "Connecticut", "land use and land cover", "coastal processes", "wetland ecosystems", "farming", "remote sensing", "Maine", "environment", "Maryland", "Atlantic", "Estuarine Coastal", "lidar", "New York", "Louisiana", "Alabama", "Georgia", "digital elevation models", "USGS:64b8833ed34e70357a2b56a0"], "modified": "2024-07-08T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-98.9685, 23.5539, -66.9234, 48.6035", "theme": ["geospatial"], "title": "Contractor vertical accuracy checkpoints for 3D Elevation Program digital elevation models in the Northern Gulf of Mexico and Atlantic coastal regions, 2012\u20132020"}