Warrenton, OR Coastal Erosion Rate
Is the coast eroding 3.6 miles northwest of Warrenton, OR?
Good news, and an honest one: USGS's data can't distinguish this stretch, 3.6 miles northwest of Warrenton, OR, from a flat trend. Whatever small movement it measured here is statistical noise, not a reliable direction, so none is claimed.
What "Warrenton" 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 Warrenton, OR, rather than showing one arbitrary line. Segment center: 46.20, -123.99. Survey years: 2002-2011, method LRR, from USGS's Pacific Northwest shoreline-change assessment. That's how current the data is here, real, but not a live feed, since a shoreline survey is a major undertaking, not an annual check-in.
Where this fits nationally
99 transects feed this segment's number; 54% of them individually measured retreat. USGS's confidence interval here is ±4.63 ft/yr. The unadjusted figure here, -1.39 ft/yr, would place it 168 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. Rank 1203 nationally for growth belongs to Chatham, MA, 2656 miles from this stretch, measured at 5.4 ft/yr. 1.6 miles up the coast, Warrenton, OR shows 4.64 ft/yr of accreting.
Not this whole stretch, just Warrenton itself: the Coastal Change Hazards Portal is USGS's own live version of this data.