Seadrift, TX Coastal Erosion Rate
What USGS measures 14.6 miles south of Seadrift, TX
14.6 miles south of Seadrift, 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 Seadrift, TX. Centered near 28.20°N, 96.70°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.
What backs this reading up
This reading comes from 122 individual transects averaged together, 0% of which measured erosion rather than growth. USGS's confidence interval here is ±1.38 ft/yr. Taken at face value, this segment's raw 0.34 ft/yr reading would land it 978 of 1211 nationally - a number worth ignoring, since it's statistical noise rather than a real trend. Source: USGS Open-File Report 2004-1089. Rank 1024 nationally for growth belongs to Camp Pendleton South, CA, 1280 miles from this stretch, measured at 0.49 ft/yr. 2.2 miles up the coast, Seadrift, TX shows the same lack of a significant trend.
One address near Seadrift: the Coastal Change Hazards Portal zooms past this stretch to the underlying map.