Langlois, OR Coastal Erosion Rate
Is the coast eroding 2.7 miles north of Langlois, OR?
2.7 miles north of Langlois, 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 this reading actually covers
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 Langlois, OR. Centered near 42.96°N, 124.47°W. 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.
How solid is this number
57 transects feed this segment's number; 7% of them individually measured retreat. Uncertainty on this specific number: 1.34 ft/yr either side. Taken at face value, this segment's raw 0.39 ft/yr reading would land it 992 of 1211 nationally - a number worth ignoring, since it's statistical noise rather than a real trend. Source: USGS Open-File Report 2012-1008. Inwood, NY sits at national rank 1043 for growth (0.59 ft/yr), one reference point among the 1211 scored segments, 2575 miles from here. Langlois, OR, 1.9 miles off, is the adjacent measured stretch, itself no significant trend.
One address near Langlois: the Coastal Change Hazards Portal zooms past this stretch to the underlying map.