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Saline aquifer mapping project in the southeastern United States

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Abstract

In 2009, the U.S. Geological Survey initiated a study of saline aquifers in the southeastern United States to evaluate the potential use of brackish or saline water from the deeper portions of the Floridan aquifer system and the underlying Coastal Plain aquifer system (Fig. 1). The objective of this study is to improve the overall understanding of the available saline water resources for potential future development. Specific tasks are to (1) develop a digital georeferenced database of borehole geophysical data to enable analysis and characterization of saline aquifers (see locations in Fig. 1), (2) identify and map the regional extent of saline aquifer systems and describe the thickness and character of hydrologic units that compose these systems, and (3) delineate salinity variations at key well sites and along section lines to provide a regional depiction of the freshwater-saltwater interfaces. Electrical resistivity and induction logs, coupled with a variety of different porosity logs (sonic, density, and neutron), are the primary types of borehole geophysical logs being used to estimate the water quality in brackish and saline formations. The results from the geophysical log calculations are being compared to available water-quality data obtained from water wells and from drill-stem water samples collected in test wells. Overall, the saline aquifer mapping project is helping to improve the understanding of saline water resources in the area. These aquifers may be sources of large quantities of water that could be treated by using reverse osmosis or similar technologies, or they could be used for aquifer storage and recovery systems.

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Additional publication details

Publication type Conference Paper
Publication Subtype Conference Paper
Title Saline aquifer mapping project in the southeastern United States
Year Published 2011
Language English
Publisher University of Georgia Warnell School of Forestry and Natural Resources
Contributing office(s) South Atlantic Water Science Center
Larger Work Type Conference Paper
Larger Work Title Proceedings of the 2011 Georgia Water Resources Conference
Conference Title 2011 Georgia Water Resources Conference
Conference Location Athens, Georgia
Conference Date April 11-13, 2011
Country United States
Other Geospatial Southeast United States
Online Only (Y/N) N
Additional Online Files (Y/N) N