{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Craig Brown", "hasEmail": "mailto:cjbrown@usgs.gov"}, "description": "This dataset provides detailed information on availability of model resources (including models and datasets) that support the modeling of six key water-quality constituents (or constituent categories) across the hydrologic system. In addition, resources associated with nine \u201ccross-cutting\u201d topics for modeling water quality are included, with \u201ccross-cutting\u201d defined herein as having relevance to more than one constituent. The model and data resources were generated as a companion product to a related publication (Lucas and others, 2025) that identifies gaps in water-quality modeling capabilities needed for assessments, projections, and evaluation of management alternatives to support ecosystem health and human beneficial use of water resources. Multiple spreadsheet tables include modeling resources for contemporary and representative models that represent an extensive but not exhaustive list; the models or datasets within each worksheet are presented in terms of the model or data source type, relevant hydrologic compartment(s), and software availability (defined at the bottom of each worksheet). Models originating in government, academia, non-governmental organizations, and private industry were considered. We emphasize models that are widely used, open source, and representative of the state of the art; additionally, models were included that are published in the literature and (or) for which documentation is easily available on the internet.\nThis data release includes the metadata and the modeling capabilities workbook, \u201cWQ_Models_Tables_1-14.xlsx\u201d that includes a cross-cutting topics overview tab and the following cross-cutting topics worksheets:\nTable 1\u2013Climate Forcing Datasets;\nTable 2\u2013(Bio)geochemical Modeling;\nTable 3\u2013Watershed Modeling;\nTable 4\u2013River Modeling;\nTable 5\u2013Lake and Reservoir Modeling;\nTable 6\u2013Reservoir Operations and Outflow Modeling;\nTable 7\u2013Estuary Modeling;\nTable 8\u2013Groundwater Modeling;\nTable 9\u2013Water Reuse Modeling;\nand a constituents tables overview tab and the following constituents worksheets:\nTable 10\u2013Water Temperature;\nTable 11\u2013Salinity;\nTable 12\u2013Nutrients;\nTable 13\u2013Sediment;\nTable 14\u2013Geologically Sourced Constituents.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P13GTPTF", "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.67583f0bd34ebb495ab012ec.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_67583f0bd34ebb495ab012ec", "keyword": ["Biogeochemical modeling", "Climate forcing data", "Estuary modeling", "Geologically sourced constituents", "Groundwater modeling", "Lake and reservoir modeling", "Nutrients", "Reservoir operations modeling", "River modeling", "Salinity", "Sediment", "USGS:67583f0bd34ebb495ab012ec", "Water reuse modeling", "Water temperature", "Watershed modeling", "biota", "climatologyMeteorologyAtmosphere"], "modified": "2025-03-14T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-180.0000, -90.0000, 180.0000, 90.0000", "theme": ["geospatial"], "title": "Model and Data Resources Supporting Water-Quality Modeling of Hydrologic Systems"}