Brookings, OR Coastal Erosion Rate
Is the coast eroding 2.8 miles northwest of Brookings, OR?
The coast 2.8 miles northwest of Brookings, OR shows no statistically significant trend either way. USGS's transects measured a rate here, but it's smaller than the survey's own margin of error for this stretch, so calling it "eroding" or "growing" would overstate what the data actually shows.
The grain of this number
Nothing here is parcel-level. USGS's raw transects run every few hundred feet along the shore; this page averages the ones nearest Brookings, OR into one ~3.5-mile reading rather than picking a single arbitrary line to represent the area. Centered near 42.10°N, 124.34°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
This reading comes from 13 individual transects averaged together, 31% of which measured erosion rather than growth. Uncertainty on this specific number: 0.51 ft/yr either side. Taken at face value, this segment's raw 0.2 ft/yr reading would land it 922 of 1211 nationally - a number worth ignoring, since it's statistical noise rather than a real trend. Source: USGS Open-File Report 2012-1008. Rank 1057 nationally for growth belongs to West Sayville, NY, 2620 miles from this stretch, measured at 0.66 ft/yr. 1.9 miles up the coast, Brookings, OR shows the same lack of a significant trend.
Not this whole stretch, just Brookings itself: the Coastal Change Hazards Portal is USGS's own live version of this data.