Environmental Sensitivity Index (ESI) Atlas: Bristol Bay, Alaska, maps and geographic information systems data (NCEI Accession 0033382)

The most widely used approach to sensitive environment mapping in the United States is the NOAA Environmental Sensitivity Index (ESI). This approach systematically compiles information in standard formats for coastal shoreline sensitivity, biological resources, and human-use resources. ESI maps are useful for identifying sensitive resources before a spill occurs so that protection priorities can be established and cleanup strategies designed in advance. Using ESIs in spill response and planning reduces the environmental consequences of the spill and cleanup efforts. The Clean Water Act with amendments by the Oil Pollution Act of 1990 requires response plans for immediate and effective protection of sensitive resources.