CoastErosionCheck

Newport, OR Coastal Erosion Rate

Shoreline change 5.5 miles north of Newport, OR

No significant trend

The coast 5.5 miles north of Newport, 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 Newport, OR into one ~3.5-mile reading rather than picking a single arbitrary line to represent the area. Centered near 44.70°N, 124.06°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

This reading comes from 102 individual transects averaged together, 84% of which measured erosion rather than growth. The published margin on this reading runs ±1.03 ft/yr. Taken at face value, this segment's raw -0.27 ft/yr reading would land it 423 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: Warrenton, OR, 103 miles away, ranks 1196 of 1211 nationally for growth, 4.64 ft/yr. 2.5 miles up the coast, Depoe Bay, OR shows the same lack of a significant trend.

Not this whole stretch, just Newport itself: the Coastal Change Hazards Portal is USGS's own live version of this data.