The U.S. Geological Survey's (USGS) National Water-Quality Assessment (NAWQA) Program recently completed a national assessment of volatile organic compounds (VOCs) in ground water (Zogorski and...

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When contaminants are detected in water resources, it is important to describe what the occurrence of these contaminants may mean to human health. The U.S. Geological Survey (USGS) began an...

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Pathogens associated with animal and human fecal wastes are carried in water and can move through the environment via stormwater runoff, groundwater, and surface waters (such as rivers)....

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The Global Change Hydrology Program was begun in 1990 to develop data, understanding, and predictive capabilities related to water and associated aspects of carbon and the greenhouse gases as they...

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The Hydro-Climatic Data Network, or HCDN, consists of streamflow records for 1,659 sites throughout United States and its Territories. Records span the period 1874 through 1988, and represent a total...

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