The Mississippi Embayment aquifer system is more than 5,000 feet thick in a wide area of south-central Louisana and southwestern Mississippi.
Hydrogeologic units of the Mississippi embayment aquifer system include the Mississippi River Valley alluvial aquifer, Vicksburg-Jackson confining unit, the upper Claiborne aquifer, the middle Claiborne confining unit, the middle Claiborne aquifer, the lower Claiborne confining unit, the lower Claiborne aquifer, the middle Wilcox aquifer, the lower Wilcox aquifer, and the Midway confining unit.
The data files listed below are supplemental to Digital surfaces and thicknesses of selected hydrogeologic units within the Mississippi Embayment Regional Aquifer Study (MERAS) (USGS Scientific Investigations Report 2008-5089). The report includes a description of methods used to derive the data.
Click on the links below to download files for this aquifer. For information about the available file types, see Aquifer data: Explanation of spatial data formats.
Hydrogeologic Unit Extents:
- Vicksburg-Jackson Group Metadata (12 KB) Shapefile (97 KB)
- Upper Claiborne aquifer Metadata (12 KB) Shapefile (118 KB)
- Middle Claiborne confining unit Metadata (12 KB) Shapefile (105 KB)
- Middle Claiborne aquifer Metadata (12 KB) Shapefile (109 KB)
- Lower Claiborne confining unit Metadata (12 KB) Shapefile (91 KB)
- Lower Claiborne aquifer Metadata (12 KB) Shapefile (87 KB)
- Middle Wilcox aquifer Metadata (12 KB) Shapefile (95 KB)
- Lower Wilcox aquifer Metadata (12 KB) Shapefile (71 KB)
- Midway confining unit Metadata (12 KB) Shapefile (98 KB)
Hydrologic Unit Surfaces:
- Vicksburg-Jackson Group (top) Metadata (12 KB) Raster (96 KB) ASCII grid (80 KB)
- Upper Claiborne aquifer (top) Metadata (12 KB) Raster (200 KB) ASCII grid (170 KB)
- Middle Claiborne confining unit (top) Metadata (12 KB) Raster (241 KB) ASCII grid (200 KB)
- Middle Claiborne aquifer (top) Metadata (12 KB) Raster (300 KB) ASCII grid (256 KB)
- Lower Claiborne confining unit (top) Metadata (12 KB) Raster (240 KB) ASCII grid (203 KB)
- Lower Claiborne aquifer (top) Metadata (12 KB) Raster (249 KB) ASCII grid (210 KB)
- Middle Wilcox aquifer (top) Metadata (12 KB) Raster (362 KB) ASCII grid (305 KB)
- Lower Wilcox aquifer (top) Metadata (12 KB) Raster (151 KB) ASCII grid (125 KB)
- Midway confining unit (top) Metadata (12 KB) Raster (371 KB) ASCII grid (317 KB)
Below are other webpages associated with this aquifer.
Principal Aquifers of the United States
Regional Groundwater Availability Studies
Below are publications associated with this aquifer.
Digital Surfaces and Thicknesses of Selected Hydrogeologic Units within the Mississippi Embayment Regional Aquifer Study (MERAS)
Ground Water Atlas of the United States
- Overview
The Mississippi Embayment aquifer system is more than 5,000 feet thick in a wide area of south-central Louisana and southwestern Mississippi.
Hydrogeologic units of the Mississippi embayment aquifer system include the Mississippi River Valley alluvial aquifer, Vicksburg-Jackson confining unit, the upper Claiborne aquifer, the middle Claiborne confining unit, the middle Claiborne aquifer, the lower Claiborne confining unit, the lower Claiborne aquifer, the middle Wilcox aquifer, the lower Wilcox aquifer, and the Midway confining unit.
The data files listed below are supplemental to Digital surfaces and thicknesses of selected hydrogeologic units within the Mississippi Embayment Regional Aquifer Study (MERAS) (USGS Scientific Investigations Report 2008-5089). The report includes a description of methods used to derive the data.
Click on the links below to download files for this aquifer. For information about the available file types, see Aquifer data: Explanation of spatial data formats.
Hydrogeologic Unit Extents:
- Vicksburg-Jackson Group Metadata (12 KB) Shapefile (97 KB)
- Upper Claiborne aquifer Metadata (12 KB) Shapefile (118 KB)
- Middle Claiborne confining unit Metadata (12 KB) Shapefile (105 KB)
- Middle Claiborne aquifer Metadata (12 KB) Shapefile (109 KB)
- Lower Claiborne confining unit Metadata (12 KB) Shapefile (91 KB)
- Lower Claiborne aquifer Metadata (12 KB) Shapefile (87 KB)
- Middle Wilcox aquifer Metadata (12 KB) Shapefile (95 KB)
- Lower Wilcox aquifer Metadata (12 KB) Shapefile (71 KB)
- Midway confining unit Metadata (12 KB) Shapefile (98 KB)
Hydrologic Unit Surfaces:
- Vicksburg-Jackson Group (top) Metadata (12 KB) Raster (96 KB) ASCII grid (80 KB)
- Upper Claiborne aquifer (top) Metadata (12 KB) Raster (200 KB) ASCII grid (170 KB)
- Middle Claiborne confining unit (top) Metadata (12 KB) Raster (241 KB) ASCII grid (200 KB)
- Middle Claiborne aquifer (top) Metadata (12 KB) Raster (300 KB) ASCII grid (256 KB)
- Lower Claiborne confining unit (top) Metadata (12 KB) Raster (240 KB) ASCII grid (203 KB)
- Lower Claiborne aquifer (top) Metadata (12 KB) Raster (249 KB) ASCII grid (210 KB)
- Middle Wilcox aquifer (top) Metadata (12 KB) Raster (362 KB) ASCII grid (305 KB)
- Lower Wilcox aquifer (top) Metadata (12 KB) Raster (151 KB) ASCII grid (125 KB)
- Midway confining unit (top) Metadata (12 KB) Raster (371 KB) ASCII grid (317 KB)
- Science
Below are other webpages associated with this aquifer.
Principal Aquifers of the United States
This website compiles USGS resources and data related to principal aquifers including Aquifer Basics, principal aquifers maps and GIS data, and the National Aquifer Code Reference List.Regional Groundwater Availability Studies
Regional groundwater availability studies enable information about groundwater to be integrated and consistent, so that this resource can be analyzed and understood on an aquifer–wide scale. These studies provide decision–makers with a better understanding of the status and trends in the Nation's groundwater availability. - Publications
Below are publications associated with this aquifer.
Digital Surfaces and Thicknesses of Selected Hydrogeologic Units within the Mississippi Embayment Regional Aquifer Study (MERAS)
Digital surfaces of selected Tertiary and younger age hydrogeologic units within the Mississippi embayment aquifer system were created using more than 2,600 geophysical logs for an area that covers approximately 70,000 square miles and encompasses parts of eight states. The digital surfaces were developed to define and display the hydrogeologic framework for the Mississippi Embayment Regional AquiAuthorsRheannon M. Hart, Brian R. Clark, Susan E. BolyardGround Water Atlas of the United States
PrefaceThe Ground Water Atlas of the United States presents a comprehensive summary of the Nation's ground-water resources and is a basic reference for the location, geography, geology, and hydrologic characteristics of the major aquifers in the Nation. The information was collected by the U.S. Geological Survey and other agencies during the course of many years of study. Results of the Regional AAuthors