Rockaway Beach, OR Coastal Erosion Rate
Shoreline change 1.2 miles south of Rockaway Beach, OR
1.2 miles south of Rockaway Beach, OR: 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 "Rockaway Beach" means on this page
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 Rockaway Beach, OR. Centered near 45.60°N, 123.94°W. 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.
What backs this reading up
113 transects feed this segment's number; 33% of them individually measured retreat. The published margin on this reading runs ±0.9 ft/yr. Taken at face value, this segment's raw 0.09 ft/yr reading would land it 844 of 1211 nationally - a number worth ignoring, since it's statistical noise rather than a real trend. Source: USGS Open-File Report 2012-1008. For scale: Qui-nai-elt Village, WA, 115 miles away, ranks 1112 of 1211 nationally for growth, 1.04 ft/yr. 3.5 miles away, Rockaway Beach, OR is the nearest other measured stretch: accretion (beach growing) at 1.15 ft/yr.
Rockaway Beach, OR on the source map: try the Coastal Change Hazards Portal, zoomable well past this page's ~3.5-mile grain.