Brigantine, NJ Coastal Erosion Rate
Shoreline change 4.2 miles northeast of Brigantine, NJ
The coast 4.2 miles northeast of Brigantine, NJ shows no statistically significant trend either way. USGS's transects measured a rate here, but it's smaller than the survey's own margin of error for this stretch, so calling it "eroding" or "growing" would overstate what the data actually shows.
The grain of this number
Nothing here is parcel-level. USGS's raw transects run every few hundred feet along the shore; this page averages the ones nearest Brigantine, NJ into one ~3.5-mile reading rather than picking a single arbitrary line to represent the area. Centered near 39.46°N, 74.32°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.
How solid is this number
This reading comes from 8 individual transects averaged together, 100% of which measured erosion rather than growth. USGS's confidence interval here is ±9.25 ft/yr. Taken at face value, this segment's raw -2.6 ft/yr reading would land it 107 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: Port St. Joe, FL, 913 miles away, ranks 1035 of 1211 nationally for growth, 0.56 ft/yr. 2.5 miles away, Brigantine, NJ is the nearest other measured stretch: moderate erosion at 2.2 ft/yr.
One address near Brigantine: the Coastal Change Hazards Portal zooms past this stretch to the underlying map.