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.
For complete citation, source data, metadata, and application
guide, please see http://www.dggs.alaska.gov/pubs/id/29504