GIS DATA

Africover Land Cover Data - Africa
AGIS GIS Global geographic, socioeconomic, vector, and raster maps.
Appalachian Trail Conservancy Appalachian Trail centerline, basemap, shelter, GPS way point data
Archive of Shakemaps from 2007 CA Earthquakes - from USGS
Atlas: The Louisiana Statewide GIS Environmental, biological, infrastructure, geophysical information for Louisiana
Baltic Sea GIS Data Land cover, administrative, population density, and natural resources for the Baltic Sea Region
Bay County GIS Planning, natural resources, property and census data for Bay County, Florida
Berkely Statewide Redistricting Database Political Redistricting - California
Boulder County, Colorado Administrative, land use, boundary, transportation for Boulder County, Colorado
Bureau of Land Management Federal land patents
BUREAU OF LAND MANAGEMENT - COLORADO BLM land boundries and areas for Colorado
BUREAU OF TRANSPORTATION STATISTICS Transportation Atlas Data for North America 
CA Geologic Survey - Socal Geologic Maps Not GIS Data - But, awesome resource! Geologic maps of SoCal (USGS - 1:24000)
CA Vegetation Map Catalog County-level vegetation map data for CA
CALIFORNIA DEPARTMENT OF FISH AND GAME line files for bays and harbors, marine ecoregions, coastlines of California
California Department of Fish and Game Environmental Hazards
California Geological Survey GIS data about geologic features and hazards in California
California Nutrition Network GIS Map Viewer. Data points healthcare agencies, & health related resource layers and demographic info layers
California Seismic Hazard Mapping Program Data Access Page GIS data related to seismic hazard areas and identification
CALIFORNIA SPATIAL DIGITAL LIBRARY raster topographic maps for California
CaSIL (The California Spatial Information Library) GIS data of all types for California. Political, cultural, physical, transportation, and images
CaSIL GeoFinder Geographic and environmental data from the California Resources Agency
Center for Transportation Analysis (CTA) US transportation data.
CGS Seismic Hazard Zonation Program Seismic Hazards - California
City of Austin, Texas housing market, site plan data, building permit, land use, employment data
City of Bakersfield, California Administrative, land use, boundary, transportation for Bakersfield, California
City of Bloomington, Indiana Metadata, zoning, hydrology, transportation, topography.
City of Corvallis, Oregon boundary, natural features, orthophotos, planning, property, utilities, wetlands.
City of Davis, California Administrative, land use, transportation, boundaries for Davis, California
City of Loveland, Colorado political boundaries, land identification, transportation features, natural features
City of Orlando Parks, bikeways, athletics, event planning for city of Orlando, Florida
City of Redding, California Administrative, boundary, transportation, water for Redding, California
City of Roseville, California Administrative, land use, boundary, transportation for Roseville, California
City of San Jose, California Administrative, boundary, TIGER for San Jose, California
City of Scottsdale GIS Boundaries, streets, parks, township and range data for the city of Scottsdale, Arizona
City of Yakima Traffic speed data summary for City of Yakima
Clay County, Minnesota highway maps, road centerlines, township boundaries, lakes and rivers, watersheds, soils.
Climate - Mojave Desert Ecosystem Program Climate (including precip, etc) for Mojave Desert
Climate Source Global Climate data
Collins Software GIS Data Link List List of Online GIS data resource links.  Very extensive!
Contours Tennessee region forest and park data, spatial photos, transportation data, maps
DAYMET Daily weather and climatological summaries for the US.  Floating point binary data or image data only.  No shapefiles (GIS) data available.
DEMS - Mojave Desert Ecosystem Program USGS Topo data for the Mojave Desert
Department of Fish & Game Bathymetry Data, Topographic Data - California & Offshore
DEPARTMENT OF GEOGRAPHY, CAL STATE NORTHRIDGE  DEMs for California
Dept. of Environment, Heritage & Local Government GIS Heritage Data for Ireland
Development Services Department GIS Division Parks, streets, hospitals, railroads, creeks, and boundary data for Redding, California
DHS: Homeland Security Advisory System   Homeland Security advisory System
Directions Magazine City data for several continents - US & Foreign Countries
DIVA - GIS Global country level data ( altitude, land cover, population density, administrative boundaries), species occurrences, climate, satellite imaging.
Divas-GIS country boundary, eco-regions, LANDSAT, for world
Earth Sensing Data Sets for GIS Projects - Various topics and locations - Global
EarthGuide Maps (UCSD) Filled in and outline maps of land throughout the world
Energy information Administration U.S. and it's territories.  Operational data, energy efficiency load management, retail revenue, sales, and customer counts by state and class of service.
EPA Clean-Air Markets National physical, demographic and boundary data
FCC (Federal Communications Commission) Mass Media Areas, FCC License Areas - United States
Federal Railroad Administration U.S. Highway-Rail crossing inventory by state, public crossings, private crossings, crossing history, rail equipment accidents, highway-rail accidents, railroad casualties, operational data.
FEMA effectively manage federal response and recovery efforts following any national incident
Fish Data Washington, Idaho, Oregon, and Western Montana species distribution, hydrography, water quality, facilities,boundaries
Florida Geographical Data Library Aerial Photos, DRG's, County, data for Florida
FreeGIS.org List of Online GIS data links.
Freight Model Improvement Program Freight movement data - United States
Geo Community Yakima County vector, raster and aerial photography for Yakima County
Geo Community San Diego County vector, raster and aerial photography for San Diego County
GeoCommunity Global geospatial data repository of all types.  The "GIS Data Depot"
GeoData.gov Your one-stop for federal, State and Local geographic data
Geographic Information Systems Development Landuse, elevation, boundaries, geology, soils, planning data for Florida
Geographic Information Systems Laboratory Data by State, Various Topics - US States
Geography Network Street Data, Floods, Elevation - US and Canada
Geography Network Reference to Clearinghouses List of major online GIS data clearinghouses
Geologic Features - Mojave Desert Ecosystem Program Faults and Geomorphology of Mojave Desert
Geospatial Data Downloads Geospatial database by region from Canadian Ministry of Energy, Mines, and Petroleum Resources  
Geotorrent.org Global User-submitted free GIS data of various types.  Note:  User-submitted data repositories do not insure data quality standards.  Be sure that you inspect data from these sources carefully and thoroughly.
GIS Data Links OR, IN, ID census data, Tiger Line data, roads, zip codes, forest, etc.
GIS Library for Davis, CA boundaries, transportation, land use, parks and open space, infrastructure, topography, demographics.
GLO Boundaries, elevation, hydrology, railroads, topography for Texas
Global Land Cover 2000 World land cover and use classification.
GOS- Geospatial One Stop Trail of Lewis and Clark
Gov. of S. Australia Water Resource Data for Australia
GREAT BASUB CENTER FOR GEOTHERMAL ENERGY spatial data for the Great Basin
GSHHS - A Global…Shoreline Database Coastline data for the whole damn world
Hawaii Statewide GIS Program Extensive GIS data archive in all categories for state of Hawaii.
High Point Data Clearinghouse City of High Point, North Carolina raster, vector data, map imaging
Hinesburg, VT Planning Dept. Land use planning, natural resources, transportation.
Hydrology - Mojave Desert Ecosystem Program Hydrography of the Mojave Desert
INEGI Map Viewer of Mexico data layers, shape files for the whole country.
Iowa Department of Natural Resources Political, agricultural, ecological, infrastructure, land description, regulation.
JPL - NASA Binary format of global sea surface temperatures
Kern County, California Administrative, land use, boundary, transportation for Kern County, California
Map Cruzin Earthquakes that have occurred in the U.S.
MapCruzin.com - The Clary-Meuser Research Network Global data including map projection, layers, metadata, etc.
Marine GIS Global Coastlines, Bathymetry, Sea Ice, Geology, Geophysics, Surface Temp, physical and chemical properties, productivity, Hydrothermal vents.
Mass.Gov Aqueducts, beaches, bike trails, counties, land use, landmarks, roads, for Massachusetts
MassGIS Massachusetts and New England environmental planning and management data, USGS topographic maps, state maps, watershed maps, roads, parcels, aerial photographs
Metro GIS Data Finder Roads, land use, boundaries, agriculture, elevation, geology, transportaion for Minnesota
Metropolitan Transportation Commision Population, water, bikeways and census data around 9 counties in the San Fransisco area
METROPOLITAN TRANSPORTATION COMMISSION 2000 Census data for San Francisco Bay Area Region
Minnesota DNR Data Deli Minnesota physical and administrative maps
MMS Cadastral Data Offshore leasing program
MMS Offshore Minerals Management Region: Alaska, Atlantic, Pacific, Gulf of Mexico.  National marine sanctuaries, areas available for leasing, resource assessment maps, marine boundaries, Federal Outer Continental Shelf (OCS) administrative boundaries.
MSS Imagery - Mojave Desert Ecosystem Program Landsat Multispectral Scanner imagery for Mojave Desert
My Florida.com Roads, traffic, boundaries, counties, for Florida
NASA Image Server Global Satellite Imagery and Aerial Photography Raster Data
NASA/JPL Space Radar Images of Earth Global Image categories of Earth: archaeology, cities, ecology and agriculture, geology, interferometry, oceans, rivers, snow, ice and glaciers, volcanoes
NATIONAL ATLAS.GOV Atlas Data for United States (agriculture, biology, boundaries, climate, etc.)
National Geophysical Data Center Global.  Coastline extractor: enter coordinates for custom coastline satellite imagery and other attributes (rivers, political boundaries, International boundaries, Internal boundaries)
National Park Service