North Beach Haven, NJ Coastal Erosion Rate
What USGS measures 0.6 miles north of North Beach Haven, NJ
0.6 miles north of North Beach Haven, 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.
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 North Beach Haven, NJ. Centered near 39.61°N, 74.21°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.
How solid is this number
79 transects feed this segment's number; 59% of them individually measured retreat. The published margin on this reading runs ±0.2 ft/yr. Taken at face value, this segment's raw -0.04 ft/yr reading would land it 726 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: Huntington Beach, CA, 2440 miles away, ranks 993 of 1211 nationally for growth, 0.39 ft/yr. 2 miles away, Beach Haven, NJ is the nearest other measured stretch: slight accretion (beach growing) at 0.4 ft/yr.
North Beach Haven, NJ on the source map: try the Coastal Change Hazards Portal, zoomable well past this page's ~3.5-mile grain.