Dunedin, FL Coastal Erosion Rate
Is the coast eroding 2.8 miles southwest of Dunedin, FL?
The coast 2.8 miles southwest 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 this reading actually covers
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 28.00°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.
Where this fits nationally
Averaging 116 separate transects produced this segment's rate, with 0% individually reading as erosion, rather than relying on any single survey line. USGS's confidence interval here is ±1.14 ft/yr. Taken at face value, this segment's raw 0.72 ft/yr reading would land it 1065 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: Camp Pendleton South, CA, 2082 miles away, ranks 1024 of 1211 nationally for growth, 0.49 ft/yr. 2.8 miles away, Belleair, FL is the nearest other measured stretch: also no significant trend.
Dunedin, FL on the source map: try the Coastal Change Hazards Portal, zoomable well past this page's ~3.5-mile grain.