{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "David A. Saad", "hasEmail": "mailto:dasaad@usgs.gov"}, "description": "The U.S. Geological Survey\u2019s (USGS) SPAtially Referenced Regression On Watershed attributes (SPARROW) model was used to aid in the interpretation of monitoring data and simulate streamflow and water-quality conditions in streams across the Midwest Region of the United States. SPARROW is a hybrid empirical/process-based mass balance model that can be used to estimate the major sources and environmental factors that affect the long-term supply, transport, and fate of contaminants in streams. The spatially explicit model structure is defined by a river reach network coupled with contributing catchments. The model is calibrated by statistically relating watershed sources and transport-related properties to monitoring-based water-quality load estimates. This USGS data release includes input and output files associated with 2012 SPARROW simulations of streamflow, total nitrogen, total phosphorus and suspended-sediment load in streams of the Midwest. Model construction, calibration and results are described in Robertson and Saad (2019, https://doi.org/10.3133/sir20195114).", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P93QMXC9", "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.5cbf5150e4b09b8c0b700df3.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_5cbf5150e4b09b8c0b700df3", "keyword": ["Alabama", "Arkansas", "Colorado", "Georgia", "Illinois", "Indiana", "Iowa", "Kansas", "Kentucky", "Louisiana", "Maryland", "Michigan", "Minnesota", "Mississippi", "Missouri", "Montana", "Nebraska", "New Mexico", "New York", "North Dakota", "Nutrient Loads", "Ohio", "Oklahoma", "Pennsylvania", "SPAtially Referenced Regression On Watershed attributes (SPARROW)", "South Dakota", "Spatial analysis", "Statistical analysis", "Streamflow", "Surface-water quality", "Suspended-sediment loads", "Tennessee", "Texas", "USGS:5cbf5150e4b09b8c0b700df3", "Virginia", "West Virginia", "Wisconsin", "Wyoming"], "modified": "2020-08-27T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-114.8483, 27.6603, -72.5108, 50.1537", "theme": ["geospatial"], "title": "SPARROW model inputs and simulated streamflow, nutrient and suspended-sediment loads in streams of the Midwestern United States, 2012 Base Year"}