Lower Grand Lagoon, FL Coastal Erosion Rate
Is the coast eroding 2.6 miles east of Lower Grand Lagoon, FL?
Nothing alarming measured 2.6 miles east of Lower Grand Lagoon, FL: whatever shift USGS's transects picked up here is too small to call reliably one way or the other, which this site reports as "no significant trend" rather than forcing a direction.
The grain of this number
Lower Grand Lagoon, FL is the nearest named place, 2.6 miles away, to a ~3.5-mile stretch of coast USGS has surveyed - the reading below covers that whole stretch, not a single property in it. Segment center: 30.14, -85.71. 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.
What backs this reading up
73 transects feed this segment's number; 100% of them individually measured retreat. Uncertainty on this specific number: 0.79 ft/yr either side. The unadjusted figure here, -0.54 ft/yr, would place it 288 of 1211 if ranked directly - but an unreliable rank isn't a useful one, which is exactly why "no significant trend" is the headline instead. Source: USGS Open-File Report 2004-1089. Rank 1037 nationally for growth belongs to Blue Point, NY, 1019 miles from this stretch, measured at 0.57 ft/yr. 2 miles away, Lower Grand Lagoon, FL is the nearest other measured stretch: moderate erosion at 2.56 ft/yr.
One address near Lower Grand Lagoon: the Coastal Change Hazards Portal zooms past this stretch to the underlying map.