Corpus Christi, TX Coastal Erosion Rate
What USGS measures 22.6 miles south of Corpus Christi, TX
22.6 miles south of Corpus Christi, 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.
The grain of this number
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 Corpus Christi, TX. Centered near 27.45°N, 97.31°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
Averaging 116 separate transects produced this segment's rate, with 0% individually reading as erosion, rather than relying on any single survey line. USGS's confidence interval here is ±0.64 ft/yr. Taken at face value, this segment's raw 0.41 ft/yr reading would land it 999 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 1107 nationally for growth belongs to Panacea, FL, 803 miles from this stretch, measured at 1 ft/yr. 2.4 miles up the coast, Corpus Christi, TX shows the same lack of a significant trend.
Not this whole stretch, just Corpus Christi itself: the Coastal Change Hazards Portal is USGS's own live version of this data.