Brigantine, NJ Coastal Erosion Rate
What USGS measures 0.6 miles east of Brigantine, NJ
0.6 miles east of Brigantine, NJ: 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.
The grain of this number
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 Brigantine, NJ. Centered near 39.41°N, 74.37°W. 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.
Where this fits nationally
Averaging 44 separate transects produced this segment's rate, with 61% individually reading as erosion, rather than relying on any single survey line. The published margin on this reading runs ±1.12 ft/yr. Taken at face value, this segment's raw -0.57 ft/yr reading would land it 275 of 1211 nationally - a number worth ignoring, since it's statistical noise rather than a real trend. Source: USGS Open-File Report 2010-1119. Palos Verdes Estates, CA sits at national rank 909 for growth (0.17 ft/yr), one reference point among the 1211 scored segments, 2449 miles from here. Brigantine, NJ, 1.2 miles off, is the adjacent measured stretch, reading moderate erosion at 2.2 ft/yr.
Not this whole stretch, just Brigantine itself: the Coastal Change Hazards Portal is USGS's own live version of this data.