{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "S. Jerrod Smith", "hasEmail": "mailto:sjsmith@usgs.gov"}, "description": "The U.S. Geological Survey, in cooperation with the Oklahoma Water Resources Board, \nconstructed a finite-difference numerical groundwater-flow model of the Salt Fork Red \nRiver aquifer using MODFLOW with the Newton formulation solver (MODFLOW-NWT). \nThe 1973 Oklahoma Water Law requires the Oklahoma Water Resources Board to conduct \nhydrologic investigations of the State\u2019s aquifers to support a determination of the maximum \nannual yield (MAY) for each groundwater basin. The MAY is defined as the amount of fresh \ngroundwater that can be withdrawn annually while ensuring a minimum 20-year life of the \ngroundwater basin. For alluvium and terrace aquifers, the groundwater-basin-life requirement \nis satisfied if, after 20 years of MAY withdrawals, 50 percent of the groundwater basin retains \na saturated thickness of at least 5 ft. When a MAY has been established, the amount of land \nowned or leased by a permit applicant determines the annual volume of water allocated to \nthat permit applicant. The annual volume of water allocated per acre of land is known as the \nequal-proportionate-share (EPS) pumping rate. Because the MAY and EPS have not yet been \nestablished for the Salt Fork Red River aquifer, the U.S. Geological Survey, in cooperation \nwith the Oklahoma Water Resources Board, conducted a hydrologic investigation and \ndeveloped a calibrated numerical groundwater-flow model to evaluate the effects of potential \ngroundwater withdrawals on groundwater availability in the Salt Fork Red River aquifer. The \nresults of groundwater-availability scenarios run on the calibrated numerical groundwater-flow \nmodel could be used by the Oklahoma Water Resources Board to evaluate the maximum \nannual yield of groundwater from the Salt Fork Red River aquifer in Oklahoma. The numerical \nmodel was temporally discretized into 1 initial steady-state stress period representing average \nconditions during 1980-2015 and 432 monthly transient stress periods representing the period \n1980-2015. This U.S. Geological Survey data release contains all of the input and output files \nfor the simulations described in the associated model documentation report \n(https://doi.org/10.3133/sir20215003).", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P927IAO1", "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.84f8ee0d-8500-4dc2-8d80-6dee27c9092a.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_84f8ee0d-8500-4dc2-8d80-6dee27c9092a", "keyword": ["Greer County", "Groundwater", "Groundwater Model", "Groundwater and surface-water interaction", "Harmon County", "Jackson County", "MODFLOW", "MODFLOW-NWT", "Oklahoma", "Salt Fork Red River", "Soil Water Balance", "USGS:84f8ee0d-8500-4dc2-8d80-6dee27c9092a", "environment", "geoscientificInformation", "inlandWaters", "usgsgroundwatermodel"], "modified": "2021-03-22T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-100.021833, 34.364727, -99.241149, 34.960013", "theme": ["geospatial"], "title": "MODFLOW-NWT model used in simulation of groundwater availability in the Salt Fork Red River aquifer, southwestern Oklahoma, 1980-2015"}