Kaneohe Base, HI Coastal Erosion Rate
Shoreline change 0.7 miles north of Kaneohe Base, HI
The coast 0.7 miles north of Kaneohe Base, 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.
What this reading actually covers
Nothing here is parcel-level. USGS's raw transects run every few hundred feet along the shore; this page averages the ones nearest Kaneohe Base, HI into one ~3.5-mile reading rather than picking a single arbitrary line to represent the area. Centered near 21.45°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.
What backs this reading up
Averaging 109 separate transects produced this segment's rate, with 2% individually reading as erosion, rather than relying on any single survey line. The published margin on this reading runs ±0.36 ft/yr. Taken at face value, this segment's raw 0.18 ft/yr reading would land it 913 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: El Segundo, CA, 2537 miles away, ranks 1114 of 1211 nationally for growth, 1.04 ft/yr. Kailua, HI, 3.4 miles off, is the adjacent measured stretch, reading slight accretion (beach growing) at 0.46 ft/yr.
One address near Kaneohe Base: the Coastal Change Hazards Portal zooms past this stretch to the underlying map.