Relative Coastal Vulnerability Assessment of Gulf Islands National Seashore (GUIS) to Sea-Level Rise

Elizabeth A. Pendleton, Erika S. Hammar-Klose, E. Robert Thieler, S. Jeffress Williams

USGS Open-File Report 03-108

Download CVI Shoreline Shapefile and metadata

Relative Coastal Vulnerability for Gulf Islands National Seashore A) in Mississippi and B) in Florida.  The innermost color bar is the relative coastal vulnerability index (CVI).  The remaining color bars are separated into the geologic variables (1-3) and physical process variables (4 - 6).  The very high vulnerability shoreline is generally along the eastern Mississippi islands.  High vulnerability shoreline is concentrated around areas with a shoreline change rate between +/- 1-meter.  Moderate vulnerability shoreline is primarily on Perdido Key and Santa Rosa Island, and the low vulnerability portion of the shore lies along the eastern end of Santa Rosa Island.

The Coastal Vulnerability Index (CVI) provides insight into the relative potential of coastal change due to future sea-level rise. The maps and data presented here can be viewed in at least two ways: 1) as an exapmpe of where physical changes are most likely to occur as sea-level rises; and 2) as a planning tool for Gulf Islands National Seashore.

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