Dillon Beach, CA Coastal Erosion Rate
Is the coast eroding 2.1 miles northwest of Dillon Beach, CA?
USGS did not publish a reliable transect reading for this exact stretch, 2.1 miles northwest of Dillon Beach, CA, so no rate is shown here rather than a guessed one.
What "Dillon Beach" 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 Dillon Beach, CA into one ~3.5-mile reading rather than picking a single arbitrary line to represent the area. Centered near 38.27°N, 122.98°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.
What backs this reading up
Source: USGS National Shoreline Change data release (ScienceBase, DOI 10.5066/P94J0K7Z), Kratzmann 2024 / Data Report 1187. Rank 1057 nationally for growth belongs to West Sayville, NY, 2632 miles from this stretch, measured at 0.66 ft/yr. 2 miles away, Dillon Beach, CA is the nearest other measured stretch: also no significant trend.
Not this whole stretch, just Dillon Beach itself: the Coastal Change Hazards Portal is USGS's own live version of this data.