Lompoc, CA Coastal Erosion Rate
Shoreline change 14.4 miles south of Lompoc, CA
The coast 14.4 miles south of Lompoc, CA shows no statistically significant trend either way. USGS's transects measured a rate here, but it's smaller than the survey's own margin of error for this stretch, so calling it "eroding" or "growing" would overstate what the data actually shows.
What "Lompoc" 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 Lompoc, CA into one ~3.5-mile reading rather than picking a single arbitrary line to represent the area. Centered near 34.45°N, 120.45°W. 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.
Where this fits nationally
91 transects feed this segment's number; 97% of them individually measured retreat. Uncertainty on this specific number: 0.25 ft/yr either side. Taken at face value, this segment's raw -0.25 ft/yr reading would land it 446 of 1211 nationally - a number worth ignoring, since it's statistical noise rather than a real trend. Source: USGS National Shoreline Change data release (ScienceBase, DOI 10.5066/P94J0K7Z), Kratzmann 2024 / Data Report 1187. Port St. Joe, FL sits at national rank 1035 for growth (0.56 ft/yr), one reference point among the 1211 scored segments, 2066 miles from here. 1.8 miles up the coast, Lompoc, CA shows the same lack of a significant trend.
One address near Lompoc: the Coastal Change Hazards Portal zooms past this stretch to the underlying map.