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This coastline coverage of Alaska represents a collective effort by many organizations over the course of the last 15 years. It began as a digital pen-up-pen-down file from the Department of Natural Resources Division of Oil & Gas and was generated into an ARC coverage by the North Slope Borough. At that point several agencies -- spearheaded by NOAA -- cooperated to have the remainder of the coastline digitized at the scale of 1:250000. Ninety percent of the features in the coverage are very close to the Alaska coastline because NOAA had no interest in covering the whole state with stream and lake information at the original time of data capture.
Our version of the Alaska coastline originated with the North Slope Borough who gave this coverage to EROS on 3-7-89. At EROS many edits and improvements were made to the coastline coverage. The State of Alaska Department of Natural Resources received this edited coverage from EROS on 7-29-92 and has continued to make cartographic improvements to the coverage.
Purpose:
For typical GIS purposes of a general coastline. Do not use for navigation.
Supplemental_Information:
Revisions:
Among the most notable corrections made by DNR:
1) placement of the Copper River (July 1992)
2) coding changes for Baird Inlet -- Selawik Lake (July 1993)
3) deletion of extraneous islands in the Aleutians
4) repositioning US/Canadian border to 141 degrees west longitude (January 1994)
5) coding changes for Walapka Bay (February 1994)
6) coding changes for Selawik Lake and coastline near Wainwright (June July August 1994) |