Port Mansfield, TX Coastal Erosion Rate
Is the coast eroding 18 miles north of Port Mansfield, TX?
Nothing alarming measured 18 miles north of Port Mansfield, TX: whatever shift USGS's transects picked up here is too small to call reliably one way or the other, which this site reports as "no significant trend" rather than forcing a direction.
What "Port Mansfield" means on this page
Port Mansfield, TX is the nearest named place, 18 miles away, to a ~3.5-mile stretch of coast USGS has surveyed - the reading below covers that whole stretch, not a single property in it. Segment center: 26.82, -97.38. 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
9 transects feed this segment's number; 100% of them individually measured retreat. The published margin on this reading runs ±0.54 ft/yr. The unadjusted figure here, -0.09 ft/yr, would place it 658 of 1211 if ranked directly - but an unreliable rank isn't a useful one, which is exactly why "no significant trend" is the headline instead. Source: USGS Open-File Report 2004-1089. Wildwood Crest, NJ sits at national rank 1185 for growth (3.33 ft/yr), one reference point among the 1211 scored segments, 1547 miles from here. Port Mansfield, TX, 1.8 miles off, is the adjacent measured stretch, itself no significant trend.
One address near Port Mansfield: the Coastal Change Hazards Portal zooms past this stretch to the underlying map.