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.
For typical GIS purposes of a general coastline. Do not use for navigation.
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) 4/19/95 K Zeiner Replaced the Canadian border in southeast with the border from the TWPSPOLY. 5/4/95 K Zeiner Added an island to the coastline per Dorothy Mortenson. Buldir Island--located in the Aleutian chain. Related_Spatial_and_Tabular_Data_Sets: LUT: ALASKA.AFRQ FREQUENCY CODE LENGTH DESC CODEC 1 4370 50.200 65157860.000 COASTLINE C 2 213 50.202 121971.300 CLOSURE LINE CL 3 2509 50.412 18472760.000 STREAM S 4 1178 50.421 10741410.000 LAKE L 5 45 90.197 2180206.000 CANADIAN BORDER CB Notes: Projection: Albers Date Received: 7/28/92 Verified: J. Tam 7/29/92 Documented by: J. Tam 7/29/92 This coverage has a fuzzy tolerance of 0.100. Cleaned up labelerrors; deleted incorrect Copper River - 7/31/92 Changed codec for Baird Inlet from S to C so it will draw on our base maps - J. Tam - 7/14/93 Coverage converted from pre-7.0 to Arc/Info 8.x to recover projection file. Work performed by D. Seamount. 4/18/2003.
publication date
It is not recommended the data be used at a scale larger than 1:250,000. Any hardcopies or published datasets utilizing these data sets shall clearly indicate their source. If the user has modified the data in any way they are obligated to describe the types of modifications they have performed. User specifically agrees not to misrepresent these data sets, nor to imply that changes they made were approved by the Alaska Department of Natural Resources.
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See Distribution_Information
NOAA, USGS/EROS, ADNR-DOG, North Slope Borough
See Supplemental_Information: Revisions:
Polygon and chain-node topology present.
See Supplemental_Information: Revisions:
See Supplemental_Information: Revisions:
Selected coastline information where needed and where available. Also used other sources. See Abstract.
See Abstract and Supplemental_Information
ALASKA coverage imported into geodatabase.
Feature class data copied to materialized view.
Materialized view data extracted and converted to Shape format.
Internal feature number.
ESRI
Feature geometry.
ESRI
Type of line
unknown
COASTLINE
unknown
CLOSURE LINE
unknown
STREAM
unknown
LAKE
unknown
CANADIAN BORDER
unknown
Area of feature in internal units squared.
ESRI
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550 W. 7th Suite 706