Lompoc, CA Coastal Erosion Rate
Shoreline change 13.1 miles south of Lompoc, CA
The coast 13.1 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 34.47°N, 120.48°W. 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.
How solid is this number
Averaging 9 separate transects produced this segment's rate, with 44% individually reading as erosion, rather than relying on any single survey line. USGS's confidence interval here is ±0.3 ft/yr. Taken at face value, this segment's raw 0.04 ft/yr reading would land it 815 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. Ocean City, WA sits at national rank 1192 for growth (4.1 ft/yr), one reference point among the 1211 scored segments, 893 miles from here. Lompoc, CA, 1.8 miles off, is the adjacent measured stretch, itself no significant trend.
One address near Lompoc: the Coastal Change Hazards Portal zooms past this stretch to the underlying map.