Heceta Beach, OR Coastal Erosion Rate
Is the coast eroding 1.1 miles northwest of Heceta Beach, OR?
1.1 miles northwest of Heceta Beach, 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.
The grain of this number
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 Heceta Beach, OR. Centered near 44.04°N, 124.13°W. Survey years: 2002-2011, method LRR, from USGS's Pacific Northwest shoreline-change assessment. That's how current the data is here, real, but not a live feed, since a shoreline survey is a major undertaking, not an annual check-in.
How solid is this number
51 transects feed this segment's number; 0% of them individually measured retreat. USGS's confidence interval here is ±3.78 ft/yr. Taken at face value, this segment's raw 0.82 ft/yr reading would land it 1081 of 1211 nationally - a number worth ignoring, since it's statistical noise rather than a real trend. Source: USGS Open-File Report 2012-1008. Crescent City, CA sits at national rank 1131 for growth (1.27 ft/yr), one reference point among the 1211 scored segments, 158 miles from here. 1.9 miles away, Heceta Beach, OR is the nearest other measured stretch: also no significant trend.
One address near Heceta Beach: the Coastal Change Hazards Portal zooms past this stretch to the underlying map.