Alabama
Alabama Node of the National Geospatial Data Clearinghouse Gateway

Alabama
Alabama Forestry Data

Alaska
Alaska Geospatial Data Clearinghouse

California
California Teale GIS Solutions Geographic Data Library

The California Resources Agency Watershed Web

California Ocean and Coastal Environmental Access Network (Cal OCEAN)

California SANDAG Digital Boundary Files and Layers

Connecticut
Connecticut Map and Geographic Information Center (MAGIC) Geo-Spatial Data Resources

Delaware
Delaware Spatial Data Clearinghouse

Delaware Geological Survey

Florida

Florida Geographic Information Board

Florida Department of Environmental Protection Technical Services GIS Data Directory

Florida Marine Research Institute

Georgia
Georgia GIS Data Clearinghouse

Georgia Environmental Resources Digital Data Atlas

Hawaii
Hawaii GIS

Illinois
Illinois Natural Resources Geospatial Data Clearinghouse

Louisiana
Louisiana State Land Office: GIS Home Page

Louisiana Geographic Information Center

Maine
Maine Office of GIS Home Page

Maryland
Maryland Geological Survey Home Page

Massachusetts
MassGIS Table of Contents

Minnesota
Minnesota GeoData Clearinghouse

Mississippi
Mississippi Automated Resource Information System (MARIS) GIS Page

Missouri
Missouri Spatial Data Information Service (MSDIS)

New Hampshire
GRANITNet Data Catalog Listing

New Jersey
New Jersey Department of Environmental Protection

Center for Remote Sensing and Spatial Analyst

New York
New York State Spatial Data

North Carolina
North Carolina Geographic Data Clearinghouse

Ohio
Ohio GIS Resource Analysis Section

Oklahoma
Spatial Data Clearinghouse

Oregon
Oregon State Service Center for GIS Spatial Data Library

Pennsylvania
Pennsylvania Spatial Data Access (PASDA) System

Rhode Island
Rhode Island Geographic information system (RIGIS)

South Carolina
South Carolina Department of Natural Resources GIS Data Clearinghouse

Texas
Texas Geography Resources: Geo-Spatial Data sets

Texas Natural Resources Information System

Washington
Washington State Geospatial Data Archive (WAGDA)

Washington State Geographic Information Councils (WAGIC)

West Virginia
West Virginia Spatial Data and Metadata Interface

Wisconsin
Wisconsin Land Information Clearinghouse

Wyoming
Wyoming spatial data

The Wyoming GIS Resources Page

U.S. Territories
Virgin Islands Conservation Data Center

Island Resources Foundation