Existing timber type mylars were developed by the Alaska Regional Office in 1978 using 1:15,840 aerial photography flown in the 1950's-1970's, and digitized primarily under...

Digitized in-house in 1988-89 both with LIDES and in ARC/INFO from the Land Status Atlas maintained by the Chugach National Forest Supervisor's Office Lands Staff. Coverage is...

Recreation sites in the Chugach National Forest. Data was digitized from 1:31,680 mylar overlays of mylar orthophoto quads using ARC/INFO. Data available from the United States...

Line coverage in ArcInfo format received from Alaska Department of Natural Resources, projected to UTM's, clipped to Chugach National Forest boundary and corrected where...

Cover types originated from the timber type coverages for each management area. First, all polygons less than five acres were ELIMINATEd, except islands in Prince William Sound....

Digitized from 1:31,380 orthophoto quads. Estuarine channel types may extend beyond shoreline. Selected stream arcs on Cordova Ranger District updated October and November 2002....

Derived from elevation grid. Data available from the United States Department of Agriculture Forest Service.

Data was digitized from 1:31,680 mylar overlays of mylar orthophoto quads using ARC/INFO. Data available from the United States Department of Agriculture Forest Service.

Shoreline for the Chugach National Forest was digitized from 1:63,360 Primary Base Series (PBS) quads by the USFS Geometronics Service Center (GSC) in Salt Lake City. Data...

Roads in the Chugach National Forest. Digitized primarily from mylar overlays of mylar USGS orthophoto quads using ARC/INFO. Data available from the United States Department of...

Polygon coverage of ecological sections and subsections for the Chugach National Forest. The sections and subsections were mapped by Dean Davidson based on the standards in the...

Grid from Digital Elevation Model, based on USGS 15" quad 100 foot contour lines. Data available from the United States Department of Agriculture Forest Service.

100 ft contour lines for the Chugach National Forest, digitized from USGS 1:63,360 quads. Data available from the United States Department of Agriculture Forest Service.

The data was derived from a Digital Elevation Model (DEM) and provides the aspect of terrain in the Chugach National Forest. Data available from the United States Department of...

Alaska Railroad track location in southcentral Alaska. About half the data was collected with GPS and post processed. Where there were gaps in the GPS data, the arcs were...

Lakes for the entire Chugach National Forest digitized from 1"/mile Primary Base Series (PBS) maps. Work was done under contract to the USFS Geometronics Service Center in Salt...

Digitized from the Geologic Map of the Chugach National Forest, AK prepared by Steven W Nelson, JA Dumoulin, & Marti L Miller, 1985. Data available from the United States...

Polygons were digitized from the Land Status Atlas maintained by the Chugach National Forest Lands staff which was derived from Public Land Orders (PLO's). The digitizing was...

The Forest boundary was digitized in-house using both ARC/INFO and LIDES. The Russian River and Chickaloon River portions of the boundary on the Kenai Peninsula were extracted...

Data received from US Fish & Wildlife Service. Wetlands interpreted stereoscopically and transferred to USGS base maps at 1:63,360 scale. Field verification/ground truthing in...