Rockport, TX Coastal Erosion Rate
What USGS measures 7 miles southeast of Rockport, TX
7 miles southeast of Rockport, TX: 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 Rockport, TX. Centered near 28.00°N, 96.95°W. The survey behind it runs to 2001, in USGS's Gulf of Mexico 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.
Where this fits nationally
105 transects feed this segment's number; 46% of them individually measured retreat. USGS's confidence interval here is ±0.97 ft/yr. Taken at face value, this segment's raw 0.13 ft/yr reading would land it 874 of 1211 nationally - a number worth ignoring, since it's statistical noise rather than a real trend. Source: USGS Open-File Report 2004-1089. For scale: Bayshore, OR, 1877 miles away, ranks 1126 of 1211 nationally for growth, 1.23 ft/yr. 2.1 miles up the coast, Rockport, TX shows the same lack of a significant trend.
One address near Rockport: the Coastal Change Hazards Portal zooms past this stretch to the underlying map.