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USGS maps monitor ground water levels
January 11, 2013
By United States Geological Survey
By United States Geological Survey
January 11, 2013
By United States Geological Survey
By United States Geological Survey
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Jan. 11, 2013, United States – Curious of what the ground water situation is like in the United States? Check out maps from the United States Geological Survey depicting ground water levels across the country. | READ MORE