{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Marvin M. Abbott", "hasEmail": "mailto:mmabbott@usgs.gov"}, "description": "This data set consists of digitized polygons of constant\nrecharge values for the Antlers aquifer in southeastern\nOklahoma. The Early Cretaceous-age Antlers Sandstone is an\nimportant source of water in an area that underlies about\n4,400-square miles of all or part of Atoka, Bryan, Carter,\nChoctaw, Johnston, Love, Marshall, McCurtain, and Pushmataha\nCounties. The Antlers aquifer consists of sand, clay,\nconglomerate, and limestone in the outcrop area. The upper part\nof the Antlers aquifer consists of beds of sand, poorly cemented\nsandstone, sandy shale, silt, and clay. The Antlers aquifer is\nunconfined where it outcrops in about an 1,800-square-mile area.\nThe recharge polygons were developed from recharge rates used as\ninput into a ground-water flow model and from published digital\ndata sets of the surficial geology of the Antlers Sandstone\nexcept in areas overlain by alluvial and terrace deposits near\nstreams. Some of the lines were interpolated where the Antlers\naquifer is overlain by alluvial and terrace deposits. The\ninterpolated lines are very similar to the aquifer boundaries\nshown on maps published in a ground-water modeling report for\nthe Antlers aquifer. The constant recharge rates used as input\nto the ground-water flow model were 0.32 inches per year for the\nwestern portion of the aquifer and 0.96 inches per year for the\neastern portion of the aquifer.\nGround-water flow models are numerical representations that\nsimplify and aggregate natural systems. Models are not unique;\ndifferent combinations of aquifer characteristics may produce\nsimilar results. Therefore, values of recharge used in the\nmodel and presented in this data set are not precise, but are\nwithin a reasonable range when compared to independently\ncollected data.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9XN9F8M", "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.5bb4d634-c150-454e-b467-da064b797f64.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_5bb4d634-c150-454e-b467-da064b797f64", "keyword": ["Antlers Sandstone", "Antlers aquifer", "USGS:5bb4d634-c150-454e-b467-da064b797f64", "aquifers", "environment", "geoscientificInformation", "ground water", "ground-water recharge", "ground-water vulnerability", "groundwater", "groundwater vulnerability", "inlandWaters", "recharge", "recharge rate"], "modified": "2020-11-17T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-97.4976, 33.7288, -94.4684, 34.3644", "theme": ["geospatial"], "title": "Digital data sets that describe aquifer characteristics of the Antlers aquifer in southeastern Oklahoma"}