Holmes Beach, FL Coastal Erosion Rate
What USGS measures 1.1 miles southeast of Holmes Beach, FL
1.1 miles southeast of Holmes 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 this reading actually covers
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 Holmes Beach, FL. Centered near 27.50°N, 82.70°W. Survey years: 2001, method LRR, from USGS's Gulf of Mexico shoreline-change assessment. That's how current the data is here, real, but not a live feed, since a shoreline survey is a major undertaking, not an annual check-in.
How solid is this number
114 transects feed this segment's number; 97% of them individually measured retreat. The published margin on this reading runs ±0.63 ft/yr. Taken at face value, this segment's raw -0.34 ft/yr reading would land it 378 of 1211 nationally - a number worth ignoring, since it's statistical noise rather than a real trend. Source: USGS Open-File Report 2004-1089. Channel Islands Beach, CA sits at national rank 1106 for growth (0.99 ft/yr), one reference point among the 1211 scored segments, 2203 miles from here. 2.3 miles up the coast, Anna Maria, FL shows the same lack of a significant trend.
Holmes Beach, FL on the source map: try the Coastal Change Hazards Portal, zoomable well past this page's ~3.5-mile grain.