Dunedin, FL Coastal Erosion Rate
Shoreline change 3.3 miles northwest of Dunedin, FL
The coast 3.3 miles northwest of Dunedin, FL shows no statistically significant trend either way. USGS's transects measured a rate here, but it's smaller than the survey's own margin of error for this stretch, so calling it "eroding" or "growing" would overstate what the data actually shows.
What "Dunedin" means on this page
Nothing here is parcel-level. USGS's raw transects run every few hundred feet along the shore; this page averages the ones nearest Dunedin, FL into one ~3.5-mile reading rather than picking a single arbitrary line to represent the area. Centered near 28.08°N, 82.82°W. The survey behind it runs to 2001, in USGS's Gulf of Mexico assessment, using the LRR method. Shoreline surveys aren't repeated every year, so this is the most recent long-term measurement USGS has published for this coast, not a live reading.
How solid is this number
This reading comes from 20 individual transects averaged together, 0% of which measured erosion rather than growth. USGS's confidence interval here is ±6.25 ft/yr. Taken at face value, this segment's raw 3.41 ft/yr reading would land it 1186 of 1211 nationally - a number worth ignoring, since it's statistical noise rather than a real trend. Source: USGS Open-File Report 2004-1089. Chincoteague, VA sits at national rank 1119 for growth (1.09 ft/yr), one reference point among the 1211 scored segments, 809 miles from here. 0.3 miles up the coast, Dunedin, FL shows the same lack of a significant trend.
Dunedin, FL on the source map: try the Coastal Change Hazards Portal, zoomable well past this page's ~3.5-mile grain.