Camp Pendleton South, CA Coastal Erosion Rate
What USGS measures 3.8 miles south of Camp Pendleton South, CA
Nothing alarming measured 3.8 miles south of Camp Pendleton South, CA: whatever shift USGS's transects picked up here is too small to call reliably one way or the other, which this site reports as "no significant trend" rather than forcing a direction.
The grain of this number
Camp Pendleton South, CA is the nearest named place, 3.8 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: 33.18, -117.37. The survey behind it runs to 1852-2016, in USGS's California 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.
How solid is this number
This reading comes from 24 individual transects averaged together, 63% of which measured erosion rather than growth. Uncertainty on this specific number: 0.16 ft/yr either side. The unadjusted figure here, -0.01 ft/yr, would place it 768 of 1211 if ranked directly - but an unreliable rank isn't a useful one, which is exactly why "no significant trend" is the headline instead. Source: USGS National Shoreline Change data release (ScienceBase, DOI 10.5066/P94J0K7Z), Kratzmann 2024 / Data Report 1187. For scale: East Atlantic Beach, NY, 2441 miles away, ranks 1172 of 1211 nationally for growth, 2.39 ft/yr. 1.9 miles up the coast, Camp Pendleton South, CA shows the same lack of a significant trend.
Not this whole stretch, just Camp Pendleton South itself: the Coastal Change Hazards Portal is USGS's own live version of this data.