The Groundwater Foundation's sources of ground water contamination page discusses common contaminates, how they get to ground water, sources of pollution along with cleanup and prevention practices. The site's focal...

Three decades after it was published, the Second Geological Survey of Pennsylvania was described as "the most remarkable series of reports ever issued by any survey." Considering the diversity of other geological...

The United States Geological Survey's (USGS) real-time data on streamflow conditions from all over the United States. A map with colored dots depicts streamflow conditions that are updated every one to four hours daily.

This report provides an overview of the supply and uses of groundwater in the United States. Topics include general facts and concepts; the groundwater budget and its response to pumping; effects of groundwater...

Professor Emeritus Richard J. Heggen of the University of New Mexico has a deep and abiding interest in underground rivers. As a professor civil engineering, he has performed many intricate studies of such systems, and...