Contact: Andrea Boyle
aboyle@udel.edu
University of Delaware

University of Delaware Graph of Acid Rain, Lewes, Del.

Caption: This graph shows long-term trends in precipitation acidity observed at Lewes, Del. The decrease over the past two decades has been attributed to emission reductions brought about by the 1990 Clean Air Act Amendments.

Credit: University of Delaware

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Related news release: UD's long-term monitoring shows 60 percent reduction in acidity of Delaware rain