Waihee-Waiehu, HI Coastal Erosion Rate
What USGS measures 0.6 miles northeast of Waihee-Waiehu, HI
The coast 0.6 miles northeast of Waihee-Waiehu, HI shows no statistically significant trend either way. USGS's transects measured a rate here, but it's smaller than the survey's own margin of error for this stretch, so calling it "eroding" or "growing" would overstate what the data actually shows.
The grain of this number
Nothing here is parcel-level. USGS's raw transects run every few hundred feet along the shore; this page averages the ones nearest Waihee-Waiehu, HI into one ~3.5-mile reading rather than picking a single arbitrary line to represent the area. Centered near 20.93°N, 156.50°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.
What backs this reading up
97 transects feed this segment's number; 84% of them individually measured retreat. Uncertainty on this specific number: 0.26 ft/yr either side. Taken at face value, this segment's raw -0.14 ft/yr reading would land it 582 of 1211 nationally - a number worth ignoring, since it's statistical noise rather than a real trend. Source: USGS Open-File Report 2011-1009. For scale: Inwood, NY, 4917 miles away, ranks 1043 of 1211 nationally for growth, 0.59 ft/yr. Waihee-Waiehu, HI, 1.8 miles off, is the adjacent measured stretch, itself no significant trend.
One address near Waihee-Waiehu: the Coastal Change Hazards Portal zooms past this stretch to the underlying map.