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uskarst (Map Service)


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Current Version: 10.81

Service Description:
Original Data Description from USGS: These data are digital facsimiles of the original 1984 Engineering Aspects of Karst map by Davies and others. This data set was converted from a printed map to a digital GIS coverage to provide users with a citable national scale karst data set to use for graphic and demonstration purposes until new, improved data are developed. These data may be used freely with proper citation. 

Because it has been converted to GIS format, these data can be easily projected, displayed and queried for multiple uses in GIS. The karst polygons of the original map were scanned from the stable base negatives of the original, vectorized, edited and then attributed with unit descriptions. All of these processes potentially introduce small errors and distortions to the geography. The original map was produced at a scale of 1:7,500,000; this coverage is not as accurate, and should be used for broad-scale purposes only. It is not intended for any site-specific studies. 

USGS Source: U.S. Geological Survey Open-File Report 2004-1352

Note: The USGS data was combined with attributes obtained from the National Park Service Karst Map and the American Geological Institute Karst Map. Displaying the pop-up will provide information on all classification schemes. Data compiled and published by B.W. Szukalski (bszukalski@esri.com).


Map Name: Layers

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All Layers and Tables

Layers: Tables: Description:
Original Data Description from USGS: These data are digital facsimiles of the original 1984 Engineering Aspects of Karst map by Davies and others. This data set was converted from a printed map to a digital GIS coverage to provide users with a citable national scale karst data set to use for graphic and demonstration purposes until new, improved data are developed. These data may be used freely with proper citation. 

Because it has been converted to GIS format, these data can be easily projected, displayed and queried for multiple uses in GIS. The karst polygons of the original map were scanned from the stable base negatives of the original, vectorized, edited and then attributed with unit descriptions. All of these processes potentially introduce small errors and distortions to the geography. The original map was produced at a scale of 1:7,500,000; this coverage is not as accurate, and should be used for broad-scale purposes only. It is not intended for any site-specific studies. 

USGS Source: U.S. Geological Survey Open-File Report 2004-1352

Note: The USGS data was combined with attributes obtained from the National Park Service Karst Map and the American Geological Institute Karst Map. Displaying the pop-up will provide information on all classification schemes. Data compiled and published by B.W. Szukalski (bszukalski@esri.com).


Copyright Text: U.S. Geological Survey Open-File Report 2004-1352, Caves and Karst in the U.S. National Park Service, AGI Karst Map of the US.

Spatial Reference:
102100

Single Fused Map Cache: true

Capabilities: Map,TilesOnly

Tile Info:
Initial Extent:
Full Extent:
Min Scale: 5.91657527591555E8
Max Scale: 577790.554289

Min LOD: 0
Max LOD: 10

Units: esriMeters

Supported Image Format Types: PNG

Export Tiles Allowed: false
Max Export Tiles Count: 100000

Document Info: