Contact: Marc Airhart
University of Texas at Austin
Caption: Groundwater depletion has been most severe in the purple areas indicated on these maps of (A) the High Plains and (B) California's Central Valley. These heavily affected areas are concentrated in parts of the Texas Panhandle, western Kansas, and the Tulare Basin in California's Central Valley. Changes in groundwater levels in (A) are adapted from a 2009 report by the US Geological Survey and in (B) from a 1989 report by the USGS.
Credit: US Geological Survey
Usage Restrictions: Credit must be given to the original source of the data.
Related news release: Groundwater depletion in semiarid regions of Texas and California threatens US food security