Dunes City, OR Coastal Erosion Rate
What USGS measures 5.3 miles southwest of Dunes City, OR
Good news, and an honest one: USGS's data can't distinguish this stretch, 5.3 miles southwest of Dunes City, OR, from a flat trend. Whatever small movement it measured here is statistical noise, not a reliable direction, so none is claimed.
What "Dunes City" 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 Dunes City, OR, rather than showing one arbitrary line. Segment center: 43.85, -124.16. USGS's Pacific Northwest assessment last surveyed this stretch through 2002-2011, computing the rate with its LRR 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 109 individual transects averaged together, 7% of which measured erosion rather than growth. The published margin on this reading runs ±0.55 ft/yr. The unadjusted figure here, 0.51 ft/yr, would place it 1026 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 2012-1008. For scale: Ocean Park, WA, 180 miles away, ranks 1180 of 1211 nationally for growth, 2.86 ft/yr. Gardiner, OR, 3.4 miles off, is the adjacent measured stretch, itself no significant trend.
Not this whole stretch, just Dunes City itself: the Coastal Change Hazards Portal is USGS's own live version of this data.