Camp Pendleton South, CA Coastal Erosion Rate
What USGS measures 5.7 miles northwest of Camp Pendleton South, CA
Unusual good news for this stretch: the shoreline 5.7 miles northwest of Camp Pendleton South, CA has grown by a measured 0.49 feet a year on average, per USGS's long-term transect data for this section. At that rate, the shoreline has gained roughly 4.9 feet over the last decade.
What "Camp Pendleton South" means on this page
Nothing here is parcel-level. USGS's raw transects run every few hundred feet along the shore; this page averages the ones nearest Camp Pendleton South, CA into one ~3.5-mile reading rather than picking a single arbitrary line to represent the area. Centered near 33.29°N, 117.46°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 0.49 ft/yr accretion rate 5.7 miles northwest of Camp Pendleton South, CA for 25 years would add roughly 12 feet of shoreline, again assuming nothing about the local sediment supply changes.
What backs this reading up
This reading comes from 73 individual transects averaged together, 0% of which measured erosion rather than growth. The published margin on this reading runs ±0.22 ft/yr. Among the 1211 US coastal segments with a measurable trend, this one ranks 1024 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. For scale: Bayshore, OR, 848 miles away, ranks 1126 of 1211 nationally for growth, 1.23 ft/yr, 2.5x this stretch's rate. 2.2 miles up the coast, Camp Pendleton South, CA shows 0.44 ft/yr of accreting.
Camp Pendleton South, CA on the source map: try the Coastal Change Hazards Portal, zoomable well past this page's ~3.5-mile grain.