Kilauea, HI Coastal Erosion Rate
Is the coast eroding 3.4 miles east of Kilauea, HI?
Nothing alarming measured 3.4 miles east of Kilauea, HI: whatever shift USGS's transects picked up here is too small to call reliably one way or the other, which this site reports as "no significant trend" rather than forcing a direction.
What this reading actually covers
Kilauea, HI is the nearest named place, 3.4 miles away, to a ~3.5-mile stretch of coast USGS has surveyed - the reading below covers that whole stretch, not a single property in it. Segment center: 22.20, -159.35. Survey years: 2007-2010, method WLR, from USGS's Hawaii 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.
How solid is this number
This reading comes from 173 individual transects averaged together, 88% of which measured erosion rather than growth. Uncertainty on this specific number: 0.26 ft/yr either side. The unadjusted figure here, -0.13 ft/yr, would place it 600 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 Open-File Report 2011-1009. For scale: Ocean Park, WA, 2586 miles away, ranks 1113 of 1211 nationally for growth, 1.04 ft/yr. 3.8 miles up the coast, Kilauea, HI shows the same lack of a significant trend.
Kilauea, HI on the source map: try the Coastal Change Hazards Portal, zoomable well past this page's ~3.5-mile grain.