CoastErosionCheck

How fast is the coastline eroding near you?

1,220 stretches of US coast, from USGS's own transect surveys.

USGS surveys the historical shoreline itself, transect by transect, and publishes the measured rate of retreat or growth per stretch of coast: not a modeled guess, and not "eroding" when the honest answer is that a stretch shows no significant trend. This is a stretch-level historical rate, not a substitute for a site-specific coastal engineering survey or a prediction of what happens at any one address.

40 ft/yr erodinggrowing
Three real stretches of coast on the same scale USGS measures every one on - the fastest erosion in this dataset, a typical no-trend stretch, and the fastest growth.
What this number actually is, before you look up your own
GrainA ~3.5-mile stretch of coast near a named town, not one address or parcel.
Coverage5 of the US regions USGS has surveyed for shoreline change - not the Great Lakes or any inland water.
Most common answer60% of stretches show no significant trend - smaller movement than the survey's own margin of error, which counts as good news, not a failed lookup.
Survey vintageVaries by region, from 2001 (Gulf) to a range spanning 1852-2016 (California) - each page states its own.
Browse all 1,220 stretches by state

Why this only covers the coast

USGS has only ever run its National Assessment of Shoreline Change along stretches of open ocean coast, 5 regions of it, covering the Gulf, the Atlantic Northeast and Mid-Atlantic, the Pacific Northwest, California and Hawaii. It does not cover the Great Lakes, inland waterways, or every mile of every one of those coastlines - only where USGS itself ran a shoreline-change survey. CoastErosionCheck reports exactly that footprint, honestly, rather than implying national coverage it doesn't have. Every number here is derived from USGS's own transects, not a site survey, and is not a substitute for one - for a specific address, USGS's own Coastal Change Hazards Portal is the authority.