East Honolulu, HI Coastal Erosion Rate
What USGS measures 1.8 miles southeast of East Honolulu, HI
Good news, and an honest one: USGS's data can't distinguish this stretch, 1.8 miles southeast of East Honolulu, HI, from a flat trend. Whatever small movement it measured here is statistical noise, not a reliable direction, so none is claimed.
What "East Honolulu" 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 East Honolulu, HI, rather than showing one arbitrary line. Segment center: 21.27, -157.70. 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 25 individual transects averaged together, 24% of which measured erosion rather than growth. Uncertainty on this specific number: 0.17 ft/yr either side. The unadjusted figure here, 0.04 ft/yr, would place it 814 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. Inwood, NY sits at national rank 1093 for growth (0.91 ft/yr), one reference point among the 1211 scored segments, 4965 miles from here. East Honolulu, HI, 2 miles off, is the adjacent measured stretch, itself no significant trend.
East Honolulu, HI on the source map: try the Coastal Change Hazards Portal, zoomable well past this page's ~3.5-mile grain.