From the Homeland Security News Wire, July 30. Chronic 2000-4 U.S. drought, worst in 800 years, may be the “new normal;”
The chronic drought that hit western North America from 2000 to 2004 left dying forests and depleted river basins in its wake and was the strongest in 800 years, scientists have concluded, but they say those conditions will become the “new normal” for most of the coming century

The chronic drought that hit western North America from 2000 to 2004 left dying forests and depleted river basins in its wake and was the strongest in 800 years, scientists have concluded, but they say those conditions will become the “new normal” for most of the coming century.
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- Impacts of 2012 Drought, Heat Thus Far (livescience.com)