Hampton Bays, NY Coastal Erosion Rate
Shoreline change 2 miles south of Hampton Bays, NY
0.46 feet a year: that is the measured retreat rate USGS's transects show for the coast 2 miles south of Hampton Bays, 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 "Hampton Bays" 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 Hampton Bays, NY into one ~3.5-mile reading rather than picking a single arbitrary line to represent the area. Centered near 40.84°N, 72.50°W. Survey years: 2007-2009, method LRR, from USGS's New England / Mid-Atlantic shoreline-change assessment. That's how current the data is here, real, but not a live feed, since a shoreline survey is a major undertaking, not an annual check-in.
25 years at this rate
If 0.46 ft/yr holds for the next 25 years, the coast 2 miles south of Hampton Bays, 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.
How solid is this number
This reading comes from 76 individual transects averaged together, 95% of which measured erosion rather than growth. USGS's confidence interval here is ±0.43 ft/yr. Among the 1211 US coastal segments with a measurable trend, this one ranks 312 for erosion, 1 being the fastest-retreating coast in the dataset. Source: USGS Open-File Report 2010-1119. Madaket, MA sits at national rank 83 for erosion (3.49 ft/yr), one reference point among the 1211 scored segments, 124 miles from here. East Quogue, NY, 1.9 miles off, is the adjacent measured stretch, itself no significant trend.
One address near Hampton Bays: the Coastal Change Hazards Portal zooms past this stretch to the underlying map.