Leggett, CA Coastal Erosion Rate
Is the coast eroding 9.1 miles west of Leggett, CA?
Good news, and an honest one: USGS's data can't distinguish this stretch, 9.1 miles west of Leggett, CA, from a flat trend. Whatever small movement it measured here is statistical noise, not a reliable direction, so none is claimed.
What "Leggett" means on this page
USGS surveys the coast in transects spaced a few hundred feet apart; this page groups the nearest ones into a single ~3.5-mile reading for the stretch closest to Leggett, CA, rather than showing one arbitrary line. Segment center: 39.86, -123.90. 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
Averaging 14 separate transects produced this segment's rate, with 57% individually reading as erosion, rather than relying on any single survey line. USGS's confidence interval here is ±0.37 ft/yr. The unadjusted figure here, -0.09 ft/yr, would place it 664 of 1211 if ranked directly - but an unreliable rank isn't a useful one, which is exactly why "no significant trend" is the headline instead. Source: USGS National Shoreline Change data release (ScienceBase, DOI 10.5066/P94J0K7Z), Kratzmann 2024 / Data Report 1187. Coronado, CA sits at national rank 1158 for growth (2.04 ft/yr), one reference point among the 1211 scored segments, 620 miles from here. Leggett, CA, 2.5 miles off, is the adjacent measured stretch, itself no significant trend.
Leggett, CA on the source map: try the Coastal Change Hazards Portal, zoomable well past this page's ~3.5-mile grain.