Brigantine, NJ Coastal Erosion Rate
What USGS measures 1.6 miles southwest of Brigantine, NJ
The coast 1.6 miles southwest of Brigantine, NJ is actually gaining ground, not losing it: USGS's transects measure 2.23 feet of accretion a year here, sediment building up rather than washing away. At that rate, the shoreline has gained roughly 22.3 feet over the last decade.
What "Brigantine" means on this page
USGS surveys the coast in transects spaced a few hundred feet apart; this page groups the nearest ones into a single ~3.5-mile reading for the stretch closest to Brigantine, NJ, rather than showing one arbitrary line. Segment center: 39.39, -74.39. The survey behind it runs to 2007-2009, in USGS's New England / Mid-Atlantic assessment, using the LRR method. Shoreline surveys aren't repeated every year, so this is the most recent long-term measurement USGS has published for this coast, not a live reading.
What 2.23 ft/yr means over time
Holding the 2.23 ft/yr accretion rate 1.6 miles southwest of Brigantine, NJ for 25 years would add roughly 56 feet of shoreline, again assuming nothing about the local sediment supply changes.
Where this fits nationally
This reading comes from 58 individual transects averaged together, 31% of which measured erosion rather than growth. Uncertainty on this specific number: 1.99 ft/yr either side. Sorted from fastest erosion to fastest growth across all 1211 measured segments nationally, this one lands at 1166. Source: USGS Open-File Report 2010-1119. Rank 1043 nationally for growth belongs to Inwood, NY, 87 miles from this stretch, measured at 0.59 ft/yr, 0.3x this stretch's rate. 2 miles away, Brigantine, NJ is the nearest other measured stretch: also no significant trend.
Brigantine, NJ on the source map: try the Coastal Change Hazards Portal, zoomable well past this page's ~3.5-mile grain.