CoastErosionCheck

Langlois, OR Coastal Erosion Rate

What USGS measures 1.7 miles northwest of Langlois, OR

No significant trend

Good news, and an honest one: USGS's data can't distinguish this stretch, 1.7 miles northwest of Langlois, OR, from a flat trend. Whatever small movement it measured here is statistical noise, not a reliable direction, so none is claimed.

What "Langlois" 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 Langlois, OR, rather than showing one arbitrary line. Segment center: 42.94, -124.48. The survey behind it runs to 2002-2011, in USGS's Pacific Northwest assessment, using the LRR method. Shoreline surveys aren't repeated every year, so this is the most recent long-term measurement USGS has published for this coast, not a live reading.

What backs this reading up

60 transects feed this segment's number; 37% of them individually measured retreat. Uncertainty on this specific number: 0.58 ft/yr either side. The unadjusted figure here, 0.26 ft/yr, would place it 950 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 1183 nationally for growth belongs to Quinby, VA, 2567 miles from this stretch, measured at 3.21 ft/yr. 1.9 miles away, Langlois, OR is the nearest other measured stretch: also no significant trend.

Langlois, OR on the source map: try the Coastal Change Hazards Portal, zoomable well past this page's ~3.5-mile grain.