Port Mansfield, TX Coastal Erosion Rate
What USGS measures 14.1 miles north of Port Mansfield, TX
The coast 14.1 miles north of Port Mansfield, TX shows no statistically significant trend either way. USGS's transects measured a rate here, but it's smaller than the survey's own margin of error for this stretch, so calling it "eroding" or "growing" would overstate what the data actually shows.
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 Port Mansfield, TX into one ~3.5-mile reading rather than picking a single arbitrary line to represent the area. Centered near 26.76°N, 97.36°W. Survey years: 2001, method LRR, from USGS's Gulf of Mexico 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
64 transects feed this segment's number; 100% of them individually measured retreat. Uncertainty on this specific number: 0.24 ft/yr either side. Taken at face value, this segment's raw -0.24 ft/yr reading would land it 452 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: Albion, CA, 1745 miles away, ranks 963 of 1211 nationally for growth, 0.3 ft/yr. 2.6 miles away, Port Mansfield, TX is the nearest other measured stretch: also no significant trend.
One address near Port Mansfield: the Coastal Change Hazards Portal zooms past this stretch to the underlying map.