# GRASS Help System

U.S. Geological Survey

## (USGS)

USGS: Topological - Boundaries, Transportation,..

Data Source:

National Cartographic Information Center
U.S. Geological Survey
User Services Section
507 National Center
Reston, VA 22092
Phone: 703-860-6045

Data Format:

Vector files in Digital Line Graph (DLG) format

Scale:

## 1:24000; 1:100000; 1:2000000

Data Coverage:

1:2000000 data is available for entire U.S.
1:24000 & 1:100000 data is spotty. For current
coverage write/call NCIC for latest edition of
"Index to Digital Line Graph & Digital Elevation Model Data".

Data Description:

Boundaries(state,county,federal)
Transportation(roads,railroads,airports)
Hydrographic(streams & water bodies)

Media:

9-track magnetic tape and/or paper maps

Aquisition Costs:

1:2000000 boundary, transportation, or hydrography - $100.00/section
1:24000/100000 boundary - $20.00/section
transportation or hydrography - $50.00/section
Service Charge of $25.00/tape

Comments:

Shared cost arrangements are possible for areas with no coverage.
Source document: US GeoData Price List(8/84), USGS Circular 895-C & 895-D
Digital Line Graphs from 1:24000 & 1:2000000. For more information on
USGS digital products and standards write/call for the following:

USGS Digital Cartographic Data Standards -
Circular 895-A > Overview and USGS Activities
"" 895-B > Digital Elevation Models
"" 895-C > Digital Line Graphs From 1:24000 Scale Maps
"" 895-D > Digital Lines Graphs From 1:2000000 Scale Maps
"" 895-E > Land Use and Land Cover Digital Data
"" 895-F > Geographic Names Information System
"" 895-G > Digital Line Graph Attribute Coding Standards

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Automatically created on: Mon Apr 4 09:21:45 2005