Camp Pendleton South, CA Coastal Erosion Rate
Is the coast eroding 7.8 miles northwest of Camp Pendleton South, CA?
7.8 miles northwest of Camp Pendleton South, CA, the coast is advancing, not retreating, at a measured 0.44 feet a year, sediment accumulating faster than any erosion USGS recorded here. At that rate, the shoreline has gained roughly 4.4 feet over the last decade.
What this reading actually covers
Camp Pendleton South, CA is the nearest named place, 7.8 miles away, to a ~3.5-mile stretch of coast USGS has surveyed - the reading below covers that whole stretch, not a single property in it. Segment center: 33.31, -117.49. Survey years: 1852-2016, method LRR, from USGS's California 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.
What 0.44 ft/yr means over time
Holding the 0.44 ft/yr accretion rate 7.8 miles northwest of Camp Pendleton South, CA for 25 years would add roughly 11 feet of shoreline, again assuming nothing about the local sediment supply changes.
How solid is this number
67 transects feed this segment's number; 0% of them individually measured retreat. USGS's confidence interval here is ±0.26 ft/yr. This segment ranks 1005 of 1211 measured US coastal segments, ordered from fastest erosion to fastest growth. Source: USGS National Shoreline Change data release (ScienceBase, DOI 10.5066/P94J0K7Z), Kratzmann 2024 / Data Report 1187. Rank 1198 nationally for growth belongs to Ilwaco, WA, 962 miles from this stretch, measured at 5.01 ft/yr, many times over this stretch's own rate. 2.2 miles away, Camp Pendleton South, CA is the nearest other measured stretch: slight accretion (beach growing) at 0.49 ft/yr.
Camp Pendleton South, CA on the source map: try the Coastal Change Hazards Portal, zoomable well past this page's ~3.5-mile grain.