{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Aaron L. Pugh", "hasEmail": "mailto:apugh@usgs.gov"}, "description": "During the spring and summer of 2020, the U.S. Geological Survey, Lower Mississippi \u2013 Gulf Water Science Center, conducted single well slug tests on selected wells within the Mississippi Alluvial Plain of Arkansas and Mississippi to estimate hydraulic conductivity (K) and transmissivity (T) values for the aquifers in which the wells are screened. A total of 324 test were conducted on 48 wells. The computer software AQTESOLV for Windows (Duffield, 2007) was used to interpretate the slug test data to estimate K and T values. Mean estimates of K for the 44 wells completed in the Mississippi River Valley alluvial aquifer ranged from 3 to 401 feet per day (ft/day) and mean estimates of T ranged from 285 to 80,559 square feet per day (ft2/day). Mean estimates of K for the 4 wells completed in the Sparta Sand or 500-foot Sand (Memphis Aquifer) that make up part of the middle Claiborne aquifer of the Mississippi embayment aquifer system ranged from 0.14 to 183 ft/day and mean estimates of T ranged from 55 to 67,913 ft2/day. \nThis Data Release contains the following data and supporting metadata: \n1.\tA PDF document with calibration information for the mechanical slugs used for testing. \n2.\tA zipped file of the 48-site files folders containing: \n1.\tThe site\u2019s slug test field form (pdf). \n2.\tDigital images of the site (jpg). \n3.\tWater-level pressure transducer log files (csv), \n4.\tExcel files(s) of transducer data with Time vs. Water Depth plots and the selected Time \u2013 Displacement data used for analysis. \n5.\tThe AQTESOLV solution report files (aqt) for each slug test. \n3.\tA summary data file in two formats (csv & GIS shape file) including the following information for each site: \n1.\tSite information [site name, agency code, USGS National Water Information System (NWIS) site number] \n2.\tLocation information (latitude, longitude, state, county). \n3.\tWell construction information [well depth and diameter, casing diameter, top and bottom of opening (screen), and opening (screen) length]. \n4.\tAquifer information (local and national aquifer codes, and aquifer thickness). \n5.\tSlug test information (test date and static water-level). \n6.\tEstimates information (minimum, mean, median, and maximum K and T values and the solution method). \n4.\tAn equipment documentation file (csv) listing the water-level tape, transducer, and slug used at each site. \n5.\tA water-level documentation file (csv) listing the before and after testing water-level measurements for each site. \n6.\tA model input file (csv) listing the values input into the model for each test. \n7.\tA model solutions file (csv) listing both the \u201cVisual\u201d and \u201cAuto\u201d match solution estimates for the slug tests at each site. \nAdditional information, including discussions of the hydrogeologic setting, well descriptions, slug testing and analysis methods, and a summary of the slug test results are available in the Open File Report associated with this Data Release (Pugh, 2021). \nThis dataset was collected and analyzed as part of the U.S. Geological Survey, Mississippi Alluvial Plain Regional Water-Availability Study.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9AXRVT7", "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.604b7263d34eb120311b37c3.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_604b7263d34eb120311b37c3", "keyword": ["500-Foot Sand Memphis Sand", "Arkansas", "Common geographic areas", "Groundwataer", "Groundwater", "Hydraulic Conductivity", "Instantaneous change in head test", "Mississippi", "Mississippi Alluvial plain", "Mississippi River Valley alluvial aquifer", "Mississippi embayment aquifer system", "Slug Test", "Sparta Sand", "Transmissivity", "USGS:604b7263d34eb120311b37c3", "middle Claiborne aquifer"], "modified": "2023-06-30T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-91.550000000004, 32.67887, -90.181279999998, 36.07527778", "theme": ["geospatial"], "title": "Hydraulic Conductivity and Transmissivity Estimates from Slug Tests in Wells Within the Mississippi Alluvial Plain, Arkansas and Mississippi, 2020"}