Jenner, CA Coastal Erosion Rate
Shoreline change 1.6 miles south of Jenner, CA
1.6 miles south of Jenner, 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 Jenner, CA. Centered near 38.44°N, 123.12°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 24 individual transects averaged together, 88% of which measured erosion rather than growth. The published margin on this reading runs ±0.36 ft/yr. Taken at face value, this segment's raw -0.32 ft/yr reading would land it 397 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. For scale: Marina del Rey, CA, 405 miles away, ranks 1118 of 1211 nationally for growth, 1.07 ft/yr. 1.3 miles up the coast, Jenner, CA shows the same lack of a significant trend.
Jenner, CA on the source map: try the Coastal Change Hazards Portal, zoomable well past this page's ~3.5-mile grain.