Boothville, LA Coastal Erosion Rate
Shoreline change 34.9 miles northeast of Boothville, LA
The coast 34.9 miles northeast of Boothville, LA has been retreating at a measured 13.68 feet a year, USGS's own long-term rate for this stretch, built from historical shoreline positions rather than a single survey. At that rate, the shoreline has lost roughly 136.8 feet over the last decade.
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 Boothville, LA. Centered near 29.66°N, 88.97°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 13.68 ft/yr holds for the next 25 years, the coast 34.9 miles northeast of Boothville, LA would retreat roughly 342 more feet, a projection, not a certainty: erosion rates shift with storms, sediment supply and any armoring built in the meantime.
How solid is this number
Averaging 15 separate transects produced this segment's rate, with 100% individually reading as erosion, rather than relying on any single survey line. The published margin on this reading runs ±5.31 ft/yr. Among the 1211 US coastal segments with a measurable trend, this one ranks 15 for erosion, 1 being the fastest-retreating coast in the dataset. Source: USGS Open-File Report 2004-1089. Rank 147 nationally for erosion belongs to Port St. Joe, FL, 217 miles from this stretch, measured at 1.72 ft/yr, 0.1x this stretch's rate. 8.4 miles up the coast, Boothville, LA shows 15.46 ft/yr of eroding.
One address near Boothville: the Coastal Change Hazards Portal zooms past this stretch to the underlying map.