San Simeon, CA Coastal Erosion Rate
What USGS measures 2.1 miles northwest of San Simeon, CA
2.1 miles northwest 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 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 San Simeon, CA. Centered near 35.64°N, 121.17°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.
Where this fits nationally
This reading comes from 20 individual transects averaged together, 65% of which measured erosion rather than growth. The published margin on this reading runs ±0.45 ft/yr. Taken at face value, this segment's raw -0.1 ft/yr reading would land it 650 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. Beach Haven, NJ sits at national rank 995 for growth (0.4 ft/yr), one reference point among the 1211 scored segments, 2554 miles from here. San Simeon, CA, 2 miles off, is the adjacent measured stretch, itself no significant trend.
Not this whole stretch, just San Simeon itself: the Coastal Change Hazards Portal is USGS's own live version of this data.