Siasconset, MA Coastal Erosion Rate
Shoreline change 1.9 miles southwest of Siasconset, MA
1.9 miles southwest of Siasconset, MA: USGS's transects didn't pick up a trend here that beats the survey's own uncertainty. That's the majority case nationally, and for this stretch specifically it means the coast is holding, not that the data failed to find anything.
What "Siasconset" means on this page
This is a roughly 3.5-mile stretch of coast, not one address or parcel - USGS's own transects run every few hundred feet, but that's finer than any one property needs, so this page reports the stretch nearest Siasconset, MA. Centered near 41.25°N, 70.00°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 99 separate transects produced this segment's rate, with 87% individually reading as erosion, rather than relying on any single survey line. Uncertainty on this specific number: 0.57 ft/yr either side. Taken at face value, this segment's raw -0.4 ft/yr reading would land it 350 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: Carpinteria, CA, 2704 miles away, ranks 942 of 1211 nationally for growth, 0.23 ft/yr. 2 miles away, Siasconset, MA is the nearest other measured stretch: also no significant trend.
One address near Siasconset: the Coastal Change Hazards Portal zooms past this stretch to the underlying map.