According to a report released by the U.S. Geological Survey, an assessment of coastal change over the past 150 years has found that 68 percent of beaches in the New England and Mid-Atlantic region are eroding. Scientists studied more than 650 miles of the New England and Mid-Atlantic coasts and found the average rate of coastal change - taking into account beaches that are both eroding and prograding - was negative 1.6 feet per year. Of those beaches eroding, the most extreme case exceeded 60 feet per year. The report, titled "National Assessment of Shoreline Change:  Historical Shoreline Change along the New England and Mid-Atlantic Coasts," is the fifth report produced as part of the USGS’s National Assessment of Shoreline Change project. 

The new report is available here. An accompanying report that provides the GIS data used to conduct the coastal change analysis can be found here.