Seaside Park, NJ Coastal Erosion Rate
Shoreline change 2 miles south of Seaside Park, NJ
Averaged across every transect USGS ran 2 miles south of Seaside Park, NJ, the shoreline has been moving inland at 0.66 feet a year, a real measured rate, not a regional estimate applied to this stretch. At that rate, the shoreline has lost roughly 6.6 feet over the last decade.
The grain of this number
Seaside Park, NJ is the nearest named place, 2 miles away, to a ~3.5-mile stretch of coast USGS has surveyed - the reading below covers that whole stretch, not a single property in it. Segment center: 39.90, -74.09. 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.
What 0.66 ft/yr means over time
Run 2 miles south of Seaside Park, NJ's 0.66 ft/yr rate forward 25 years and it implies about 17 feet of further retreat, assuming nothing changes, which is exactly the assumption a seawall or nourishment project exists to break.
Where this fits nationally
Averaging 110 separate transects produced this segment's rate, with 85% individually reading as erosion, rather than relying on any single survey line. USGS's confidence interval here is ±0.6 ft/yr. Among the 1211 US coastal segments with a measurable trend, this one ranks 248 for erosion, 1 being the fastest-retreating coast in the dataset. Source: USGS Open-File Report 2010-1119. Pescadero, CA sits at national rank 326 for erosion (0.45 ft/yr), one reference point among the 1211 scored segments, 2584 miles from here. 3.5 miles up the coast, Forked River, NJ shows 0.93 ft/yr of eroding.
Not this whole stretch, just Seaside Park itself: the Coastal Change Hazards Portal is USGS's own live version of this data.