East Honolulu, HI Coastal Erosion Rate
Shoreline change 1.9 miles west of East Honolulu, HI
1.9 miles west of East Honolulu, HI: USGS's transects didn't pick up a trend here that beats the survey's own uncertainty. That's the majority case nationally, and for this stretch specifically it means the coast is holding, not that the data failed to find anything.
What this reading actually covers
This is a roughly 3.5-mile stretch of coast, not one address or parcel - USGS's own transects run every few hundred feet, but that's finer than any one property needs, so this page reports the stretch nearest East Honolulu, HI. Centered near 21.28°N, 157.75°W. USGS's Hawaii assessment last surveyed this stretch through 2007-2010, computing the rate with its WLR method. Other US regions were surveyed in different years, sometimes decades apart, so this page states its own rather than implying one national vintage.
How solid is this number
This reading comes from 178 individual transects averaged together, 26% of which measured erosion rather than growth. Uncertainty on this specific number: 0.12 ft/yr either side. Taken at face value, this segment's raw 0.11 ft/yr reading would land it 861 of 1211 nationally - a number worth ignoring, since it's statistical noise rather than a real trend. Source: USGS Open-File Report 2011-1009. Rank 1046 nationally for growth belongs to Mexico Beach, FL, 4480 miles from this stretch, measured at 0.6 ft/yr. 1.7 miles up the coast, East Honolulu, HI shows the same lack of a 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.