Greenbackville, VA Coastal Erosion Rate
Shoreline change 8 miles east of Greenbackville, VA
8 miles east of Greenbackville, VA: 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 Greenbackville, VA. Centered near 38.05°N, 75.25°W. Survey years: 2007-2009, method LRR, from USGS's New England / Mid-Atlantic 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.
Where this fits nationally
This reading comes from 129 individual transects averaged together, 57% of which measured erosion rather than growth. USGS's confidence interval here is ±0.27 ft/yr. Taken at face value, this segment's raw -0.06 ft/yr reading would land it 695 of 1211 nationally - a number worth ignoring, since it's statistical noise rather than a real trend. Source: USGS Open-File Report 2010-1119. Quinby, VA sits at national rank 1184 for growth (3.29 ft/yr), one reference point among the 1211 scored segments, 49 miles from here. 2.2 miles away, Girdletree, MD is the nearest other measured stretch: slight erosion at 0.4 ft/yr.
Not this whole stretch, just Greenbackville itself: the Coastal Change Hazards Portal is USGS's own live version of this data.