Center for Spatial Analysis Technologies
| Description
Digital line graph (DLG) data are digital representations of cartographic information. DLGs of map features are converted to digital form from maps and related sources. Intermediate-scale DLG data are derived from USGS 1:100,000-scale 30- by 60-minute quadrangle maps. If these maps are not available, Bureau of Land Management planimetric maps at a scale of 1: 100,000 are used. Intermediate-scale DLGs are sold in five categories: (1) Public Land Survey System; (2) boundaries (3) transportation; (4) hydrography; and (5) hypsography. All DLG data distributed by the USGS are DLG - Level 3 (DLG-3), which means the data contain a full range of attribute codes, have full topological structuring, and have passed certain quality-control checks. This layer is a the subset of transportation comprising railroads. |
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![[small map]](/statewide/small/rail.png){kind=small}
Screensize image file (916x1024 pixels) |
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![[large map]](/statewide/large/rail.png){kind=small}
100 dpi image file (3400x3800 pixels) |
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![[download]](../download.gif){kind=small}
Data: 436 KB Zipped, 2.0 MB Unzipped, 843 KB Actual Size |
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![[metadata]](../metadata.gif){kind=small}
View Metadata |
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://csat.er.usgs.gov/statewide/layers/rail.html
Page Contact Information: webmaster-ga@usgs.gov
Page Last Modified: Wednesday, 07-Jun-2006 16:37:56 EDT
