{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Robert J Welk", "hasEmail": "mailto:rwelk@usgs.gov"}, "description": "This data release provides spatial digital data for factors that influence pluvial flood hazard potential, including closed depressions, curve number, drainage networks, topographic slope, average annual rainfall, 1-hr and 24-hour 100-year return period rainfall accumulation, and locations of recorded floods. In addition, these flood influencing factors are summarized to a common 900-meter by 900-meter polygrid and a pluvial flood hazard rank calculated for each grid cell according to methods described in Welk and others (2025). Two sets of flood hazard ranks are provided: one based on expert judgment using the Analytic Hierarchy Process (AHP), and another derived from iterative ensemble smoothing, in which AHP matrix values were varied and calibrated against a dataset of recorded flood locations. A pairwise comparison matrix is included to document the expert-based weighting process.  More details are available in Welk and others (2025).", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9N6J1SN", "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.649c3e57d34ef77fcb031161.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_649c3e57d34ef77fcb031161", "keyword": ["Closed Depression", "Connecticut", "Curve Number", "Flood Hazards", "Flood Mitigation assessment", "Geospatial Applications", "Long Island Sound", "New York", "USGS:649c3e57d34ef77fcb031161", "environment", "floods", "geographic information systems", "geospatial datasets", "hydrology", "precipitation (atmospheric)", "rainfall", "runoff", "slope"], "modified": "2025-11-25T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-74.05598750177016, 41.71646259074854, -71.72085835952517, 40.5024263996604", "theme": ["geospatial"], "title": "Geospatial Datasets of Factors Influencing Pluvial Flood Potential in Long Island, New York and Near Coastal Areas Surrounding Long Island Sound in New York, Connecticut, and Rhode Island"}