Department of Agriculture, NRCS Soil Conservation Service

• Natural Resources Conservation Service Home Page
(HTTP)
• SSURGO, STATSGO and NATSGO soils data
• National Resource Inventory (NRI) Data
• Digital Orthophotography Data
• U.S. and World Data
• DEM and Census Data
• Order data in DLG-3 Optional, Arc/Info Export and GRASS Vector Format

Bureau of Land Management

• GIS Utilities
(FTP)
• Data conversions and additional URL sites

Defense Mapping Agency Digital Data

• Digital Chart of the World (DCW US)
(HTTP)
• Documentation describing DCW data

• 1990 Census Lookup
(FTP)
• TIGER Mapping Service
(HTTP)
• US/World 1980 Census Political Boundaries
(FTP)
• Documentation describing data
• US Census home page

CIA Digital Data

• World Data Bank (WDB)
(FTP)
• Documentation describing WDB data

US Environmental Protection Agency Digital Data

• EPA GIS Data Download Page

The GIS Data Download component of C-MAP allows you to download GIS datasets (e.g. Air, Water, Land) in ArcInfo export or ArcView shapefile format, for use with your own GIS software. The various emissions and effects datasets can be visually integrated and analyzed in map format according to your area of interest. Many of the GIS datasets can be expanded through the use of related tables, downloadable in dBase IV format. Data summaries and metadata compliant with Federal Geographic Data Committee (FGDC) standards are also available with each dataset.

US Earth Resources Observation Systems
Remote Sensing Data Center (EROS)

• 1:250,000 Digital Elevation Models (DEM)
(FTP)
• Documentation describing DEM data
• Select data by 250 quad name
• 1:2,000,000 Digital Line Graphs (DLG)
(FTP)
• Documentation describing 2M DLG
• Select data by US region
• 1:100,000 Digital Line Graphs (DLG)
(FTP)
• Documentation describing 100K DLG
• Select data by 100K quad name
• SAST-Scientific Assessment and Strategy Team
(HTTP)
• Documentation describing SAST
• Environmental Information System for the Upper Mississippi and Lower Missouri River Basins
• Data in Arc/Info format

Federal Geographic Data Products

• Manual of Federal Geographic Data Products (FGDC)
(HTTP)
• FGDC Overview

US National Biological Survey (NBS)

• NBS GAP Analysis
(HTTP)
• Biodiversity data
• Data in Arc/Info format

US National Oceanic and Atmospheric Administration

• National Climatic Data Center
(HTTP)
• On-Line Data Access

US National Park Service Digital Data

• National Park Service Boundaries
(FTP)
• Documentation describing boundary data
• Park boundary data in Arc/Info format
• National Park Units by Region
(HTTP)
• Pollution Emission Sites in US
(FTP)
• Documentation describing emission data
• Emission data in Arc/info format

US Fish and Wildlife Service Digital Data

• National Wetlands Inventory (NWI)
(FTP)
• Documentation describing NWI data

USGS Digital Data

• 1:250,000 Digital Elevation Models (DEM)
(HTTP)
• FTP via Graphics
• 1:2,000,000 Digital Line Graphs (DLG)
(HTTP)
• FTP via Graphics
• 1:100,000 Digital Line Graphs (DLG)
(HTTP)
• FTP via State
• National Atlas Of The US
• 1:250,000 Land Use and Land Cover
• Geologic Map of the U.S.
(FTP)
• Geology data in Arc/Info format
• National Geospatial Data Clearinghouse-US Geological Survey Node
(HTTP)
• A list of most popular digital geospatial data set collections from USGS
• DEM, DLG, Geologic Data, Hydrologic Unit Maps, Water Resources Information.
• Arc/INFO Export and SDTS Formats
• USGS home page

State of Arizona

• Arizona Geographic Information Council
(HTTP)
• Data contacts

State of Arkansas

• GIS Data Library
(HTTP)
• Catalog of all State Digital Data
• Data can be ordered in Arc/Info, Intergraph, GRASS or Erdas formats

State of California - Teale Data Center

• GIS Data Library
(HTTP)
• Digital Data Arc/Info format (.e00)
• Administrative Divisions
• Infrastructure
• Physical Geography
• Cultural Geography

• California State Lands Commission
(HTTP)
• Digital Data Arc/Info format (.e00)
• Fish and Wildlife Habitat

State of Idaho

• Idaho Department of Water Resources
(HTTP)
• Metadata page
• GIS data contacts

State of Illinois

• Illinois Geographic Information System
(HTTP)
• Statewide and Countywide Data
• GIS at the Illinois Natural History Survey
(HTTP)
• GIS data on CD-ROM

State of Indiana

• INGIS-Indiana Geographic Information Server
(HTTP)
• Data available in Arc/Info and GRASS formats
• Agricultural Computing Network at Purdue University

State of Iowa

• Geological Survey Bureau
(HTTP)
• Data Contacts

State of Kansas

• Data Access and Support Center
(HTTP)
• Kansas GIS Core Database
• Data in Arc/info formats

Maine Office of GIS

• GIS Data Library
(HTTP)
• Digitial Data Arc/Info format (.e00)
• Table of Contents for available data

State Of Massachusetts

• Mass GIS
(HTTP)

State of Minnesota

• Minnesota Land Management Information Center
(HTTP)
• Minnesota's GIS/LIS Consortium

State of Mississippi

• MARIS (Mississippi Automated Resource Information Systems)
(HTTP)
• Spatial Data Available

State of Missouri

• Missouri Spatial Data Information Service
(HTTP)
• Data in Arc/Info .e00 format
• FTP Access to Datasets

Montana Natural Resource Information System

• GIS Data Library
(HTTP)
• Digital Data Arc/Info format (.e00)
• Counties coverage
• Largest City in Each County coverage
• Lakes & Streams coverage
• Highways coverage
• 1990 Population Density coverage
• Land Use coverage
• River Basins
• National Forest Land
• National Park Service Land
• Indian Reservations
• US Fish & Wildlife Service Lands
• Legislative Districts

Nebraska Natural Resources Commission

• GIS Data Library
(HTTP)
• Digital Data Arc/Info format (.e00)
• Statewide and Countywide databases
• Climate Databases
• Surface Water Databases
• Groundwater Databases
• Soils and Landuse Databases
• Demographics
• Political Boundary Databases

State of New Hampshire

• NH GIS Resources
(HTTP)
• NH Department of Transportation
• NH Office of State Planning
• NH Department of Environmental Services

State of New Jersey

• New Jersey GIS Resource Guide
(HTTP)
• State wide data
• Regional data

State of New Mexico

• New Mexico GIS Advisory Council
(HTTP)
• Data contacts

State of New York

• New York Spatial Data
(HTTP)
• Spatial Data Clearinghouse

North Carolina Center for Geographic Information and Analysis

• History and Mission
(HTTP)
• Statewide Database
(HTTP)

State of Oklahoma

• Spatial and Environmental Information Clearinghouse
(HTTP)
• State DEM, DLG, Land Use, National Wetlands Inventory, Census, and Weather Data

State of Oregon

• Oregon's Service Center for GIS
(HTTP)
• Statewide Data Sets
• Arc/Info format

State of Pennsylvania

• Pennsylvania Rails-to-Trails
(HTTP)

• Pennsylvania Geospatial Data Clearinghouse
(HTTP)

State of Texas - Government Information

• GIS Planning Council Home Page
(HTTP)
• Arc/Info format from the follow list of agencies:
• Texas Natural Resource Conservation Commission
• Texas Parks and Wildlife
• Texas Water Development Board
• Texas Department of Transportation
• General Land Office

State of Utah

• Automated Geographic Reference Center (AGRC)
(HTTP)
• Arc/Info format
• State geographic information database

State of Wisconsin

• Wisconsin Land Information Clearinghouse
(HTTP)
• National Geospatial Data Clearinghouse - Wisconsin Node