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Alaska Shoreline Change Tool
Alaska Division of Geological & Geophysical Surveys
State of Alaska > Natural Resources > Geological & Geophysical Surveys > Maps > Alaska Shoreline Change Tool
This interactive tool displays historic and predicted shoreline position throughout Alaska. Users can explore the coasts of the state to see where shoreline has been in the past, and where it will be in the future. Historic shoreline positions were determined by looking at aerial photographs and satellite imagery dating back to the 1950s. Using the Digital Shoreline Assessment Tool (DSAS), rates of shoreline change were calculated. These rates were then used to project shoreline positions. Each predicted shoreline has an uncertainty, shown by a collar of dashed lines, that represents a 90 percent confidence that the shoreline will be within that area for that year. Currently, historic shoreline data are available for download but predicted shoreline positions are not.

The development of this map is funded with qualified outer continental shelf oil and gas revenues by the Coastal Impact Assistance Program, U.S. Fish & Wildlife Service, U.S. Department of the Interior.

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