Drop in U.S. underground water levels has accelerated -USGS
Environment Correspondent Deborah Zabarenko
WASHINGTON
Mon May 20, 2013 6:56pm EDT
May 20 (Reuters) - Water levels in U.S. aquifers, the vast underground storage areas tapped for agriculture, energy and human consumption, between 2000 and 2008 dropped at a rate that was almost three times as great as any time during the 20th century, U.S. officials said on Monday.
link-
http://www.reuters.com/article/2013/05/20/usa-water-idUSL2N0E11VC20130520