Camp Pendleton South, CA Coastal Erosion Rate
Shoreline change 1.5 miles west of Camp Pendleton South, CA
Unusual good news for this stretch: the shoreline 1.5 miles west of Camp Pendleton South, CA has grown by a measured 0.98 feet a year on average, per USGS's long-term transect data for this section. At that rate, the shoreline has gained roughly 9.8 feet over the last decade.
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 Camp Pendleton South, CA. Centered near 33.23°N, 117.42°W. USGS's California assessment last surveyed this stretch through 1852-2016, 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.
25 years at this rate
Holding the 0.98 ft/yr accretion rate 1.5 miles west of Camp Pendleton South, CA for 25 years would add roughly 25 feet of shoreline, again assuming nothing about the local sediment supply changes.
What backs this reading up
Averaging 48 separate transects produced this segment's rate, with 0% individually reading as erosion, rather than relying on any single survey line. USGS's confidence interval here is ±0.49 ft/yr. Among the 1211 US coastal segments with a measurable trend, this one ranks 1102 for erosion, 1 being the fastest-retreating coast in the dataset. Source: USGS National Shoreline Change data release (ScienceBase, DOI 10.5066/P94J0K7Z), Kratzmann 2024 / Data Report 1187. Mexico Beach, FL sits at national rank 1181 for growth (2.91 ft/yr), one reference point among the 1211 scored segments, 1884 miles from here. Camp Pendleton South, CA, 2.1 miles off, is the adjacent measured stretch, reading slight accretion (beach growing) at 0.9 ft/yr.
Not this whole stretch, just Camp Pendleton South itself: the Coastal Change Hazards Portal is USGS's own live version of this data.