Dunedin, FL Coastal Erosion Rate
Shoreline change 1.7 miles northwest of Dunedin, FL
1.7 miles northwest of Dunedin, 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 Dunedin, FL. Centered near 28.05°N, 82.82°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.
How solid is this number
Averaging 93 separate transects produced this segment's rate, with 44% individually reading as erosion, rather than relying on any single survey line. USGS's confidence interval here is ±1.12 ft/yr. Taken at face value, this segment's raw 0.36 ft/yr reading would land it 987 of 1211 nationally - a number worth ignoring, since it's statistical noise rather than a real trend. Source: USGS Open-File Report 2004-1089. Point Lookout, NY sits at national rank 1194 for growth (4.23 ft/yr), one reference point among the 1211 scored segments, 1014 miles from here. 1.7 miles away, Dunedin, 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.