Manasota Key, FL Coastal Erosion Rate
What USGS measures 1.6 miles north of Manasota Key, FL
1.6 miles north of Manasota Key, 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 Manasota Key, FL. Centered near 26.95°N, 82.36°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
Averaging 108 separate transects produced this segment's rate, with 79% individually reading as erosion, rather than relying on any single survey line. USGS's confidence interval here is ±0.39 ft/yr. Taken at face value, this segment's raw -0.09 ft/yr reading would land it 657 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: Fields Landing, CA, 2557 miles away, ranks 1085 of 1211 nationally for growth, 0.85 ft/yr. Englewood, FL, 2 miles off, is the adjacent measured stretch, itself no significant trend.
Manasota Key, FL on the source map: try the Coastal Change Hazards Portal, zoomable well past this page's ~3.5-mile grain.