Montauk, NY Coastal Erosion Rate
Is the coast eroding 1 miles south of Montauk, NY?
The coast 1 miles south of Montauk, NY shows no statistically significant trend either way. USGS's transects measured a rate here, but it's smaller than the survey's own margin of error for this stretch, so calling it "eroding" or "growing" would overstate what the data actually shows.
The grain of this number
Nothing here is parcel-level. USGS's raw transects run every few hundred feet along the shore; this page averages the ones nearest Montauk, NY into one ~3.5-mile reading rather than picking a single arbitrary line to represent the area. Centered near 41.03°N, 71.95°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.
Where this fits nationally
Averaging 87 separate transects produced this segment's rate, with 71% individually reading as erosion, rather than relying on any single survey line. USGS's confidence interval here is ±0.17 ft/yr. Taken at face value, this segment's raw -0.05 ft/yr reading would land it 710 of 1211 nationally - a number worth ignoring, since it's statistical noise rather than a real trend. Source: USGS Open-File Report 2010-1119. For scale: Sarita, TX, 1729 miles away, ranks 1038 of 1211 nationally for growth, 0.58 ft/yr. Montauk, NY, 1.4 miles off, is the adjacent measured stretch, itself no significant trend.
One address near Montauk: the Coastal Change Hazards Portal zooms past this stretch to the underlying map.