Surface and subsurface geologic data from previous USGS studies of the Gulf Coast region, south-central United States

This dataset captures in digital form the results of previously published U.S. Geological Survey (USGS) Water Mission Area studies related to water resource assessment of Cenozoic strata and unconsolidated deposits within the Mississippi Embayment and the Gulf Coastal Plain of the south-central United States. The data are from reports published from the late 1980s to the mid-1990s by the Gulf Coast Regional Aquifer-System Analysis (RASA) studies and in 2008 by the Mississippi Embayment Regional Aquifer Study (MERAS). These studies, and the data presented here, describe the geologic and hydrogeologic units of the Mississippi embayment, Texas coastal uplands, and the coastal lowlands aquifer systems, south-central...

Tags: 3D, Alabama, Arkansas, Cane River Formation, Carrizo Sand, All tags... Cenozoic, Claiborne Group, Coastal lowlands aquifer system, Cockfield Formation, Cook Mountain Formation, Eocene, Geography, Jackson Group, Kentucky, Laredo Formation, Louisiana, Lower Claiborne confining unit, Lower Wilcox aquifer, McNairy-Nacatoch aquifer, Memphis Sand, Middle Claiborne aquifer, Middle Claiborne confining unit, Middle Wilcox aquifer, Midway Group, Midway confining unit, Miocene, Mississippi, Mississippi River Valley alluvial aquifer, Mississippi River Valley alluvial aquifer, Mississippi embayment aquifer system, Missouri, NCGMP (National Cooperative Geologic Mapping Program), National Cooperative Geologic Mapping Program, National Geologic Synthesis Project, Oklahoma, Oligocene, Paleocene, Pliocene, Quaternary, Regional Aquifer System Analysis, Sparta Sand, Tennessee, Tertiary, Texas, Texas coastal uplands aquifer system, US GeoFramework Initiative, USGI, USGS Science Data Catalog (SDC), United States GeoFramework Initiative, Upper Claiborne Aquifer, Upper Wilcox aquifer, Vicksburg Group, Wilcox Group, Yegua Formation, alluvial, borehole, elevation, elevation, environment, hydrogeologic, marine shale, sandstone, stratigraphic thickness, structure contours, thickness, three dimensional, Fewer tags

Hydraulic Conductivity and Transmissivity Estimates from Slug Tests in Wells Within the Mississippi Alluvial Plain, Arkansas and Mississippi, 2020

During the spring and summer of 2020, the U.S. Geological Survey, Lower Mississippi – Gulf Water Science Center, conducted single well slug tests on selected wells within the Mississippi Alluvial Plain in 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 tests were conducted on 48 wells. The computer software AQTESOLV version 4.50.002 (HydroSOLVE, Inc., 2007) was used to interpret the slug test data to estimate K and T values. Mean estimates of K for the 44 wells screened 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...

Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: 500-Foot Sand Memphis Sand, 500-Foot Sand Memphis Sand, 500-foot Sand, Ar, Arkansas, All tags... Common geographic areas, Conductivity, Groundwataer, Groundwataer, Groundwater, Hydraulic Conductivity, Hydraulic Conductivity, Instantaneous change in head test, Instantaneous change in head test, Memphis Sand, Mississippi, Mississippi Alluvial plain, Mississippi River Valley alluvial aquifer, Mississippi River Valley alluvial aquifer, Mississippi embayment aquifer system, Mississippi embayment aquifer system, Slug Test, Slug Test, Sparta Sand, Sparta Sand, Transmissivity, Transmissivity, USGS Science Data Catalog (SDC), middle Claborne aquifer, middle Claiborne aquifer, middle Claiborne aquifer, Fewer tags

Geodatabase of the datasets used to represent the six subunits of the Texas Coastal Uplands and Mississippi Embayment aquifer system, Alabama, Arkansas, Illinois, Kentucky, Louisiana, Mississippi, Missouri, Tennessee, and Texas

These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This geodatabase includes spatial datasets that represent the Texas Coastal Uplands and Mississippi Embayment aquifer system in the States of Alabama, Arkansas, Illinois, Kentucky, Louisiana, Mississippi, Missouri, Tennessee, and Texas. Included are: (1) polygon extents; datasets that represent the aquifer system extent, the entire extent subdivided into subareas or subunits, and any polygon extents of special interest (outcrop areas,...

Categories: pre-SM502.8; Tags: Alabama, Arkansas, Illinois, Kentucky, Louisiana, All tags... Lower Wilcox aquifer, McNairy-Nacatoch aquifer, Middle Claiborne aquifer, Middle Wilcox aquifer, Mississippi, Mississippi Embayment aquifer, Missouri, Mower Claiborne-Upper Wilcox aquifer, NSDI, Tennessee, Texas, Texas Coastal Uplands aquifer, USGS Science Data Catalog (SDC), United States, Upper Claiborme aquifer, aquifer, aquifer system, environment, extent, geoscientificInformation, groundwater, inlandWaters, inlandWaters, Fewer tags