San Simeon, CA Coastal Erosion Rate
Shoreline change 1 miles south of San Simeon, CA
1 miles south of San Simeon, CA: USGS's transects didn't pick up a trend here that beats the survey's own uncertainty. That's the majority case nationally, and for this stretch specifically it means the coast is holding, not that the data failed to find anything.
What "San Simeon" means on this page
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 San Simeon, CA. Centered near 35.60°N, 121.14°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.
What backs this reading up
This reading comes from 47 individual transects averaged together, 79% of which measured erosion rather than growth. Uncertainty on this specific number: 0.5 ft/yr either side. Taken at face value, this segment's raw -0.14 ft/yr reading would land it 588 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. Rank 1005 nationally for growth belongs to Camp Pendleton South, CA, 261 miles from this stretch, measured at 0.44 ft/yr. 1.6 miles away, San Simeon, CA is the nearest other measured stretch: also no significant trend.
San Simeon, CA on the source map: try the Coastal Change Hazards Portal, zoomable well past this page's ~3.5-mile grain.