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U.S. GEOLOGICAL SURVEY
Fact Sheet 2008-3037

RESEARCH TO MORE EFFECTIVELY MANAGE CRITICAL GROUND-WATER BASINS

California Water Science Center
Cooperative Water Program

As the regional management agency for two of the most heavily used ground-water basins in California, the Water Replenishment District of Southern California (WRD) plays a vital role in sheparding the water resources of southern Los Angeles County. WRD is using the results of the U.S. Geological Survey (USGS) studies to help more effectively manage the Central and West Coast basins in the most efficient, cost-effective way.

In partnership with WRD, the USGS is using the latest research tools to study the geohydrology and geochemistry of the two basins. USGS scientists are:

• Drilling and collecting detailed data from over 40 multiple-well monitoring sites,
• Conducting regional geohydrologic and geochemical analyses,
• Developing and applying a computer simulation model of regional ground-water flow.

USGS science is providing a more detailed understanding of ground-water flow and quality. This research has enabled WRD to more effectively manage the basins. It has helped the District improve the efficiency of its spreading ponds and barrier injection wells, which replenish the aquifers and control seawater intrusion into the ground-water system.

This fact sheet is available online in Portable Document Format (PDF). If you do not have the Adobe Reader, it is available for free download from Adobe Systems Incorporated.

Download the report (PDF, 768 KB)

Document Accessibility: Adobe Systems Incorporated has information about PDFs and the visually impaired. This information provides tools to help make PDF files accessible. These tools convert Adobe PDF documents into HTML or ASCII text, which then can be read by a number of common screen-reading programs that synthesize text as audible speech. In addition, an accessible version of Adobe Reader 8.0 for Windows (English only), which contains support for screen readers, is available. These tools and the accessible reader may be obtained free from Adobe at Adobe Access.

For more information about the
USGS Cooperative Water Program, contact:
Donna Schiffer, Acting Director,
U.S. Geological Survey,
California Water Science Center
916/278-3000 schiffer@usgs.gov
http://water.usgs.gov/coop