The U.S. Geological Survey is using TerraGo Technologies' GeoPDF format to make its primary base series quadrangle maps available online. The USGS GeoPDF maps can be ...
Chloride and nitrate concentrations are rising and arsenic levels are holding steady or falling. Those are two of the conclusions from a U.S. Geological Survey assessment of changes in the nation’s ...
The US Geological Survey added induced seismicity to its seismic-risk maps, the agency said Mar. 28, citing a sharp rise in earthquakes associated with wastewater disposal wells, especially in ...
To track down the former site of her great-great-great-grandfather’s Silicon Valley fruit orchard, Pamela Storm turned to a seemingly unlikely place: the U.S. Geological Survey, repository of ...
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