Jamaica Beach, TX Coastal Erosion Rate
Is the coast eroding 9.6 miles southwest of Jamaica Beach, TX?
The coast 9.6 miles southwest of Jamaica Beach, 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 Jamaica Beach, TX into one ~3.5-mile reading rather than picking a single arbitrary line to represent the area. Centered near 29.12°N, 95.11°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
52 transects feed this segment's number; 90% of them individually measured retreat. Uncertainty on this specific number: 0.41 ft/yr either side. Taken at face value, this segment's raw -0.36 ft/yr reading would land it 368 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: Kailua, HI, 3905 miles away, ranks 1014 of 1211 nationally for growth, 0.46 ft/yr. Jamaica Beach, TX, 2 miles off, is the adjacent measured stretch, reading slight erosion at 0.62 ft/yr.
One address near Jamaica Beach: the Coastal Change Hazards Portal zooms past this stretch to the underlying map.