Bokeelia, FL Coastal Erosion Rate
Is the coast eroding 8.4 miles northwest of Bokeelia, FL?
The coast 8.4 miles northwest of Bokeelia, FL has been retreating at a measured 0.81 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 8.1 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 Bokeelia, FL. Centered near 26.75°N, 82.25°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 0.81 ft/yr holds for the next 25 years, the coast 8.4 miles northwest of Bokeelia, FL would retreat roughly 20 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
108 transects feed this segment's number; 100% of them individually measured retreat. Uncertainty on this specific number: 0.52 ft/yr either side. This segment ranks 219 of 1211 measured US coastal segments, ordered from fastest erosion to fastest growth. Source: USGS Open-File Report 2004-1089. Boothville, LA sits at national rank 21 for erosion (10.52 ft/yr), one reference point among the 1211 scored segments, 454 miles from here. 3.3 miles up the coast, Rotonda, FL shows the same lack of a significant trend.
One address near Bokeelia: the Coastal Change Hazards Portal zooms past this stretch to the underlying map.