Water quality conditions in basin-fill aquifers

The USGS released a new report today of GIS layers intended for use in analyzing water-quality conditions of basin-fill aquifers in the southwestern U.S. The basins provide the majority of water for arid and semi-arid areas of California, Nevada, Utah, Arizona, and New Mexico.

The GIS layers include:

• Hydrogeologic Area Boundaries
• Elevation
• Geology
• Land Use
• Precipitation
• Population
• Water Use
• Public-Supply Water Use
• Irrigated Agriculture Water Use

Ref: McKinney, T.S., and Anning, D.W., 2009, Geospatial data to support analysis of water-quality conditions in basin-fill aquifers in the southwestern United States: U.S. Geological Survey Scientific Investigations Report 2008-5239, 16 p.; Available at http://pubs.usgs.gov/sir/2008/5239.