Kaumakani, HI Coastal Erosion Rate
Shoreline change 0.6 miles west of Kaumakani, HI
Nothing alarming measured 0.6 miles west of Kaumakani, 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
Kaumakani, HI is the nearest named place, 0.6 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: 21.92, -159.64. The survey behind it runs to 2007-2010, in USGS's Hawaii assessment, using the WLR method. Shoreline surveys aren't repeated every year, so this is the most recent long-term measurement USGS has published for this coast, not a live reading.
How solid is this number
Averaging 28 separate transects produced this segment's rate, with 93% individually reading as erosion, rather than relying on any single survey line. Uncertainty on this specific number: 0.53 ft/yr either side. The unadjusted figure here, -0.4 ft/yr, would place it 353 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: Santa Monica, CA, 2626 miles away, ranks 1152 of 1211 nationally for growth, 1.85 ft/yr. Pakala Village, HI, 1.9 miles off, is the adjacent measured stretch, itself no significant trend.
One address near Kaumakani: the Coastal Change Hazards Portal zooms past this stretch to the underlying map.