Port O'Connor, TX Coastal Erosion Rate
Shoreline change 9 miles south of Port O'Connor, TX
The coast 9 miles south of Port O'Connor, 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.
The grain of this number
Nothing here is parcel-level. USGS's raw transects run every few hundred feet along the shore; this page averages the ones nearest Port O'Connor, TX into one ~3.5-mile reading rather than picking a single arbitrary line to represent the area. Centered near 28.32°N, 96.47°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.
How solid is this number
4 transects feed this segment's number; 0% of them individually measured retreat. USGS's confidence interval here is ±2.6 ft/yr. Taken at face value, this segment's raw 2.54 ft/yr reading would land it 1175 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 1154 nationally for growth belongs to Ocean Park, WA, 1949 miles from this stretch, measured at 1.87 ft/yr. 1.7 miles away, Port O'Connor, TX is the nearest other measured stretch: also no significant trend.
Not this whole stretch, just Port O'Connor itself: the Coastal Change Hazards Portal is USGS's own live version of this data.