West Hampton Dunes, NY Coastal Erosion Rate
What USGS measures 0.5 miles northeast of West Hampton Dunes, NY
0.46 feet a year: that is the measured retreat rate USGS's transects show for the coast 0.5 miles northeast of West Hampton Dunes, NY, averaged across the full historical record surveyed here. At that rate, the shoreline has lost roughly 4.6 feet over the last decade.
What "West Hampton Dunes" means on this page
Nothing here is parcel-level. USGS's raw transects run every few hundred feet along the shore; this page averages the ones nearest West Hampton Dunes, NY into one ~3.5-mile reading rather than picking a single arbitrary line to represent the area. Centered near 40.78°N, 72.70°W. The survey behind it runs to 2007-2009, in USGS's New England / Mid-Atlantic assessment, using the LRR method. Shoreline surveys aren't repeated every year, so this is the most recent long-term measurement USGS has published for this coast, not a live reading.
25 years at this rate
If 0.46 ft/yr holds for the next 25 years, the coast 0.5 miles northeast of West Hampton Dunes, NY would retreat roughly 12 more feet, a projection, not a certainty: erosion rates shift with storms, sediment supply and any armoring built in the meantime.
Where this fits nationally
90 transects feed this segment's number; 100% of them individually measured retreat. USGS's confidence interval here is ±0.41 ft/yr. This segment ranks 313 of 1211 measured US coastal segments, ordered from fastest erosion to fastest growth. Source: USGS Open-File Report 2010-1119. For scale: South Duxbury, MA, 137 miles away, ranks 437 of 1211 nationally for erosion, 0.25 ft/yr, 0.5x this stretch's rate. 1.5 miles away, West Hampton Dunes, NY is the nearest other measured stretch: slight erosion at 0.41 ft/yr.
West Hampton Dunes, NY on the source map: try the Coastal Change Hazards Portal, zoomable well past this page's ~3.5-mile grain.