ESI: Habitats - American Samoa

NOAA Environmental Sensitivity Index (ESI) maps of habitats. Created by NOAA Office of Response and Restoration (OR&R), ESI maps provide a concise summary of coastal resources that are at risk if an oil spill occurs nearby to help responders reduce the environmental consquences of the spill and the cleanup efforts. Additionally, ESI maps can be used by planners--before a spill happens--to identify vulnerable locations, establish protection priorities, and identify cleanup strategies.Habitat rankings rate how sensitive an area would be to an oil spill. The ranking scale goes from 1 to 10. A rank of 1 represents habitats with the least susceptibility to damage by oiling. Examples include steep, exposed rocky cliffs and banks. The oil cannot penetrate into the rock and will be washed off quickly by the waves and tides. A rank of 10 represents habitats most likely to be damaged by oiling. Examples include protected, vegetated wetlands, such as mangrove swamps and saltwater marshes. Oil in these areas will remain for a long period of time, penetrate deeply into the substrate, and inflict damage to many kinds of plants and animals. For a list of all habitat rankings, see

Data and Resources

Additional Info

Field Value
Last Updated September 19, 2019, 17:41
Created September 19, 2019, 17:41
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