Laguna Beach, FL Coastal Erosion Rate
Shoreline change 4.3 miles northwest of Laguna Beach, FL
4.3 miles northwest of Laguna Beach, FL: USGS's transects didn't pick up a trend here that beats the survey's own uncertainty. That's the majority case nationally, and for this stretch specifically it means the coast is holding, not that the data failed to find anything.
What "Laguna Beach" means on this page
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 Laguna Beach, FL. Centered near 30.30°N, 86.00°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.
Where this fits nationally
Averaging 100 separate transects produced this segment's rate, with 99% individually reading as erosion, rather than relying on any single survey line. Uncertainty on this specific number: 0.51 ft/yr either side. Taken at face value, this segment's raw -0.21 ft/yr reading would land it 490 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: Mexico Beach, FL, 37 miles away, ranks 1181 of 1211 nationally for growth, 2.91 ft/yr. 2.8 miles away, Laguna Beach, FL is the nearest other measured stretch: also no significant trend.
Not this whole stretch, just Laguna Beach itself: the Coastal Change Hazards Portal is USGS's own live version of this data.