Boothville, LA Coastal Erosion Rate
What USGS measures 56.3 miles northeast of Boothville, LA
3.7 feet a year: that is the measured retreat rate USGS's transects show for the coast 56.3 miles northeast of Boothville, LA, averaged across the full historical record surveyed here. At that rate, the shoreline has lost roughly 37 feet over the last decade.
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 Boothville, LA into one ~3.5-mile reading rather than picking a single arbitrary line to represent the area. Centered near 30.00°N, 88.86°W. USGS's Gulf of Mexico assessment last surveyed this stretch through 2001, computing the rate with its LRR method. Other US regions were surveyed in different years, sometimes decades apart, so this page states its own rather than implying one national vintage.
25 years at this rate
If 3.7 ft/yr holds for the next 25 years, the coast 56.3 miles northeast of Boothville, LA would retreat roughly 93 more feet, a projection, not a certainty: erosion rates shift with storms, sediment supply and any armoring built in the meantime.
Where this fits nationally
Averaging 81 separate transects produced this segment's rate, with 100% individually reading as erosion, rather than relying on any single survey line. USGS's confidence interval here is ±1.38 ft/yr. Among the 1211 US coastal segments with a measurable trend, this one ranks 75 for erosion, 1 being the fastest-retreating coast in the dataset. Source: USGS Open-File Report 2004-1089. For scale: Bolivar Peninsula, TX, 341 miles away, ranks 178 of 1211 nationally for erosion, 1.29 ft/yr, 0.3x this stretch's rate. Slidell, LA, 2 miles off, is the adjacent measured stretch, reading severe erosion at 4.59 ft/yr.
One address near Boothville: the Coastal Change Hazards Portal zooms past this stretch to the underlying map.