Unified Interior Regions

The gasoline additive methyl tert-butyl ether (MTBE) is widespread in New Hampshire's ground water, particularly in four counties -- Rockingham, Strafford, Hillsborough and Merrimack. Ground water from these counties was more likely to contain MTBE than were samples from the rest of the state. 

The U.S. Geological Survey (USGS) today issued preliminary estimates of the magnitudes of floods experienced throughout New Hampshire from April 16 through April 18. The highest ever flows recorded by the USGS occurred at 5 rivers in southern New Hampshire.

Many private ground-water wells in New Hampshire and Maine may have arsenic at concentrations close to or above Federal safety standards for public water supplies. A recently released study by the U.S. Geological Survey (USGS) shows the likely locations of elevated arsenic.

Many private ground-water wells in New Hampshire and Maine may have arsenic at concentrations close to or above Federal safety standards for public water supplies. A recently released study by the U.S. Geological Survey (USGS) shows the likely locations of elevated arsenic.

Note to Editors: Return intervals are used by hydrologists to describe the magnitude and frequency of floods and represent the average interval of time over which floods of similar magnitudes are expected to occur. Digital images of these photographs are available on the Web site http://nh.water.usgs.gov

The U.S. Geological Survey (USGS) today issued preliminary estimates of the magnitudes of floods experienced throughout New Hampshire from May 13 through May 17. The highest ever flows recorded by the USGS occurred at 12 rivers in central and southern New Hampshire.

As the spectacular New England fall foliage gives way to another of the region's infamous winters, many wonder what this year will bring. Long-time residents think winter just isn't what it used to be in New England.

As the spectacular New England fall foliage gives way to another of the region's infamous winters, many wonder what this year will bring. 

America’s rivers and streams are generally suitable for irrigation, supplying drinking water, and home and recreational uses. However, in areas with significant agricultural and urban development, the quality of our nation’s water resources has been degraded by contaminants such as pesticides, nutrients, and gasoline-related compounds.

America’s rivers and streams are generally suitable for irrigation, supplying drinking water, and home and recreational uses. However, in areas with significant agricultural and urban development, the quality of our nation’s water resources has been degraded by contaminants such as pesticides, nutrients, and gasoline-related compounds.

A recently released study led by the U.S. Geological Survey shows that an estimated 41,000 people in three southeast New Hampshire counties are using private wells that contain arsenic in concentrations that exceed federal safety standards for public water supplies. Officials made the announcement at a press conference today in Pembroke.