Klamath, CA Coastal Erosion Rate
What USGS measures 2.7 miles southwest of Klamath, CA
The coast 2.7 miles southwest of Klamath, 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 "Klamath" 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 Klamath, CA into one ~3.5-mile reading rather than picking a single arbitrary line to represent the area. Centered near 41.54°N, 124.08°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.
Where this fits nationally
62 transects feed this segment's number; 100% of them individually measured retreat. Uncertainty on this specific number: 0.95 ft/yr either side. Taken at face value, this segment's raw -0.8 ft/yr reading would land it 223 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 1142 nationally for growth belongs to Mexico Beach, FL, 2287 miles from this stretch, measured at 1.54 ft/yr. Klamath, CA, 1.8 miles off, is the adjacent measured stretch, itself no significant trend.
Klamath, CA on the source map: try the Coastal Change Hazards Portal, zoomable well past this page's ~3.5-mile grain.