Ocean Park, WA Coastal Erosion Rate
Is the coast eroding 3.3 miles south of Ocean Park, WA?
The coast 3.3 miles south of Ocean Park, WA is actually gaining ground, not losing it: USGS's transects measure 2.86 feet of accretion a year here, sediment building up rather than washing away. At that rate, the shoreline has gained roughly 28.6 feet over the last decade.
What this reading actually covers
Nothing here is parcel-level. USGS's raw transects run every few hundred feet along the shore; this page averages the ones nearest Ocean Park, WA into one ~3.5-mile reading rather than picking a single arbitrary line to represent the area. Centered near 46.45°N, 124.05°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.
25 years at this rate
Holding the 2.86 ft/yr accretion rate 3.3 miles south of Ocean Park, WA for 25 years would add roughly 72 feet of shoreline, again assuming nothing about the local sediment supply changes.
Where this fits nationally
Averaging 111 separate transects produced this segment's rate, with 0% individually reading as erosion, rather than relying on any single survey line. Uncertainty on this specific number: 0.47 ft/yr either side. Among the 1211 US coastal segments with a measurable trend, this one ranks 1180 for erosion, 1 being the fastest-retreating coast in the dataset. Source: USGS Open-File Report 2012-1008. Grand Isle, LA sits at national rank 1197 for growth (4.73 ft/yr), one reference point among the 1211 scored segments, 2180 miles from here. 3.4 miles away, Long Beach, WA is the nearest other measured stretch: accretion (beach growing) at 5.37 ft/yr.
Not this whole stretch, just Ocean Park itself: the Coastal Change Hazards Portal is USGS's own live version of this data.