Beach Haven, NJ Coastal Erosion Rate
What USGS measures 1.2 miles northeast of Beach Haven, NJ
The coast 1.2 miles northeast of Beach Haven, NJ is actually gaining ground, not losing it: USGS's transects measure 0.4 feet of accretion a year here, sediment building up rather than washing away. At that rate, the shoreline has gained roughly 4 feet over the last decade.
What this reading actually covers
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 Beach Haven, NJ. Centered near 39.58°N, 74.23°W. USGS's New England / Mid-Atlantic assessment last surveyed this stretch through 2007-2009, computing the rate with its LRR method. Other US regions were surveyed in different years, sometimes decades apart, so this page states its own rather than implying one national vintage.
25 years at this rate
Holding the 0.4 ft/yr accretion rate 1.2 miles northeast of Beach Haven, NJ for 25 years would add roughly 10 feet of shoreline, again assuming nothing about the local sediment supply changes.
Where this fits nationally
This reading comes from 47 individual transects averaged together, 11% of which measured erosion rather than growth. USGS's confidence interval here is ±0.36 ft/yr. This segment ranks 995 of 1211 measured US coastal segments, ordered from fastest erosion to fastest growth. Source: USGS Open-File Report 2010-1119. Rank 933 nationally for growth belongs to Kennebunkport, ME, 325 miles from this stretch, measured at 0.22 ft/yr, 0.5x this stretch's rate. 2 miles up the coast, North Beach Haven, NJ shows the same lack of a significant trend.
One address near Beach Haven: the Coastal Change Hazards Portal zooms past this stretch to the underlying map.