{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Andrew T. Leaf", "hasEmail": "mailto:aleaf@usgs.gov"}, "description": "The model simulates two-dimensional groundwater flow and base flow in streams in the \nsouthern Nicolet Unit of the Chequamegon-Nicolet National Forest using the analytic \nelement program GFLOW (Haitjema, 1995). Significant streams and lakes in the model \ndomain are represented at varying levels of detail as linesink elements fully connected \nto the groundwater system. The highest level of detail is given to surface water features \nwithin the Forest Unit, while greatly simplified features around the perimeter of the model \nprovide a boundary condition for the groundwater flow system. Groundwater discharge to \nthe linesinks is computed, and routed through the surface water network as base flow. \nRecharge to the groundwater system was obtained from a separate soil-water-balance \n(SWB) model, which uses topography, soils, land use, and climatic data to estimate \nrecharge as deep drainage from the soil zone. Estimated average annual recharge rates \nwere supplied to the GFLOW model on a regular 1-km grid covering the model domain, \nusing the Hybrid GFLOW-MODFLOW feature of GFLOW.\n\t\t\nThe model was calibrated to groundwater levels, interpreted lake stages, and estimated \nannual base flows in streams, \\with an emphasis on data collected since 1970. Parameters \nrepresenting hydraulic conductivity, groundwater recharge, and surface water bed-sediment \nresistance were adjusted using the parameter estimation program PEST, to produce \nsimulated groundwater levels and base flow estimates that agree with field measurements, \nand input parameter values that are consistent with previous studies and the conceptual \nunderstanding of the area. This USGS data release contains all of the input and output for \nthe simulations described in the published report, which can be found in the main directory \nof this data release.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/F7M044BV", "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.fd3e6b0c-3c26-4950-84c7-42a618b2a851.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_fd3e6b0c-3c26-4950-84c7-42a618b2a851", "keyword": ["Chequamegon-Nicolet National Forest", "Copper Falls Formation", "Eagle River--Florence District", "GFLOW", "Groundwater", "Groundwater Model", "InlandWaters", "Lakewood--Laona DistrictForest County", "Langlade County", "Marinette County", "Menominee County", "Nicolet Unit", "Oconto County", "PEST", "Soil-Water-Balance Code", "USGS:fd3e6b0c-3c26-4950-84c7-42a618b2a851", "Wisconsin", "environment", "geoscientificInformation", "inlandWaters", "usgsgroundwatermodel"], "modified": "2020-11-17T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-89.033588, 45.037111, -88.144211, 45.762721", "theme": ["geospatial"], "title": "GFLOW groundwater flow model for the southern part of the Nicolet Unit of the Chequamegon-Nicolet National Forest, Wisconsin"}