For the more information about water resources in the National Park Service, please visit http://www.nature.nps.gov/water/.


Virgin Islands National Park and Virgin Islands Coral Reef National Monument Seafloor Maps

Seafloor maps were created for the nearshore waters of St. John, U.S. Virgin Islands, including Virgin Islands National Park and Virgin Islands Coral Reef National Monument, by NOAA's Center for Coastal Monitoring and Assessment. The maps provide spatially explicit, habitat information, biological cover and live coral cover of the coral reef ecosystem. Shallow-water (< 30m) habitat maps were generated by interpretation of satellite and airborne imagery. Moderate depth (30-60m) habitat maps were generated by interpretation of acoustic imagery.

Shallow Water (< 30m) Benthic Habitats of St. John, U.S. Virgin Islands

Sand covered 43% of the area mapped; pavement (low-relief, carbonate rock), which was the most common reef type, covered 16%; aggregate reef, covered 7%; and patch reefs covered 3%. The dominant biological cover was algae, which covered 74% of the area mapped; live coral covered only 1.5%.

Moderate Depth (30-60m) Benthic Habitats of St. John, U.S. Virgin Islands

Rodoliths (calcareous nodules colonized by successive layers of coralline red algae) covered 77% of the area mapped; coral reefs covered 7%; pavement covered 6%; and sand covered 8%. The dominant biological cover was algae, which covered 93% of the area mapped. Live coral covered about 2% of the mapped area.

Reports, maps, data and metadata created by this project can be downloaded from the NPS Integrated Resource Management Applications Portal. Please see below for direct download links to each product.

Reports

Shallow Water Benthic Habitats of St. John, U.S. Virgin Islands (PDF 133MB)

Moderate Depth Benthic Habitats of St. John, U.S. Virgin Islands (PDF 68.7MB)

Maps, Data and Metadata

Benthic Habitat Data for St. John, U.S. Virgin Islands (ZIP 731MB)

Last Updated: May 07, 2012