• GIS Data Standards
• DIGEST Home Page
• SDTS - Spatial Data Transfer Standard, from USGS page
• GIS Products and datasets
• The University of Arkansas' Center for Advanced Spatial Technologies has one of the best collections of links to free, downloadable, ready for GIS data on the net, many of which are shamelessly lifted and used below

• Worldwide
• Digital Chart of the World (DCW) - The whole thing available through a graphic interface at the Penn State University's DCW Server; files in E00 format; or access DCW through the NC State University GIS Library
• Perry Castaneda Library - Univ of Texas; CIA maps for the world, historical maps, others
• ARCData Online - ESRI's page for downloadable data
• The Global Spatial Data Infrastructure is an effort to establish a common set of data standards and provide access to data through metadata served over the web. GSDI's metadata search accesses over 220 servers. Their listing of server links is the gateway to a motherload of geographic data around the world.
• The International Steering Committee for Global Mapping now has 80 member countries pledged to make data available to a common standard over the Internet. Currently has Global Mapping v 0.0, a VPF format worldwide set based on VMAP0 data, Global Land Cover Characterization and Global 30 Arc Second Elevation Data. Global Mapping v 1.0 is 1:1 million scale VPF data produced by individual national mapping agencies, currently available for 6 different Asian countries.
• USGS has some good sources of worldwide data:
• a page with links to gazetteers worldwide, including the US Geographic Name Information Server
• The Global Land Cover Database - Global land cover characteristics from 1992-1993 AVHRR observations in a flat, headerless raster format, distributed as compressed and uncompressed single-band images.
• Global population, soils, vegetation and topographic data under the purview of the United Nations Environment Programme
• Worldwide Seafloor data - 2 minute bathymetry in ASCII XYZ format
• Core Software's Imagenet service provides orderable EROS-A1 imagery worldwide, and also offers a freely searchable and viewable worldwide archive of other imagery sources, including LANDSAT, SPOT, and several newer high resolution sources.
• GPSy - Macintosh GPS page; links to data compatible with this particular GPS system, most are commercial sites


BY PLACE:

Since most net-accessible datasets are produced by government organizations, they fall within the limits of political boundaries. Therefore, I have listed the sets below in alphabetical order by country, and then by first order subdivision and/or locale. Those produced by regional or non-governmental organizations that cross political boundaries are generally listed multiple times under each country or state that they include

Africa	The data page for the Africa Data Dissemination Service, a cooperative effort by the US Agency for International Development and USGS; ArcInfo coverages at regional and national levels CARPE, or the Central African Regional Program for the Environment, is a program sponsored by USAID with a GIS data site hosted by University of Maryland that includes rainfall data from over 1000 stations across the continent over 40 years, in ArcView or ArcInfo formats
Antarctica	The Antarctic Digital Database - Courtesy of the British Antarctic Survey, vector data in E00 format. Antarctic Geographic Data Integration (AGDI) is an initiative of the Scientific Committee on Antarctic Research to make a standard dataset available at a 1:5 million scale
Argentina	Instituto Geografico Militar- data for sale; slow moving site, too.
Australia	The Australian Spatial Data Infrastructure, starting point to search for metadata or datasets from multiple agencies and organizations The Australia Geologic Survey Organization (AGSO) has access to national geoscience datasets, generally at 1:5 million equivalent, with an online query and view capability AUSLIG - Australia Surveying and Land Information Group, Australia's National Mapping Agency; data for sale The Australian Geodynamics Cooperative Research Center (AGCRC) GRASSLinks page is an interactive web server running on public domain GRASS software serving geographic, geologic, and geophysical data. Environment Australia (EA) Online and their Environmental Resources Information Network provides access to data, to include the Australian Gazetteer; EA also hosts the Australia Ntural Resources Atlas.
New South Wales	NSW's Community Access to Natural Resource Infromation (CANRI) includes metadata and several interactive map display capabilities
Northern Territories	The Northern Territories Land Information System, NTLIS, is the state's node on the Australian Spatial Data Infrastructure, featuring a metadata index and the NT portion of the Australia Coastal Atlas on-line mapping capability
Queensland	Queensland's node of the Australian Coastal Atlas is an interactive map display utility The Queensland Spatial Information Infrastructure Strategy (QSIIS) site has a metadata-focus with other information.
South Australia	Planning SA spatial data page- South Australia's GIS office, with environmental and socio-economic info and an ESRI-based on-line map generator The Department of Environment and Heritage has great information on their 'Lands and Maps' site, along with a few free downloads.
Tasmania	The LIST, or Land Information System of Tasmania, is the state's node on the Australian Spatial Data Infrastructure, with metadata available through subscription
Victoria	Victoria's GI Connections is the state's node on the Australian Spatial Data Infrastructure
Western Australia	WALIS, the Western Australia Land Information System, is a well developed site with extensive metadata and a good interactive map display capability.
Austria	The Bundesamt fur Eich- und Vermessungswesen - Download elevation data, orthophotos, and vector forest and contour data, apparently in DWG, DXF and DGN format. The Geological Survey of Austria GeoBase Austria site focuses on geological data
Belgium	Belgium's national mapping agency - ordering information
Brazil	The Legal Amazon Environment Diagnostic Project- a demo built by Intergraph with limited interactive mapping capability; also with links to the sponsoring agency, Brazil's Institute of Geography and Statistics (IBGE) CIEG (Integrated Center for the Study of Geoprocessing) - ArcInfo / ArcView files with data for Brazil and Parana State The Geological Survey of Brazil has a searchable database of primarily geophysical data
Brunei	Environmental Information Resource Center has a fairly cumbersome but apparently large metadata listing
Cameroon	CARPE, or the Central African Regional Program for the Environment, is a program sponsored by USAID with a GIS data site hosted by University of Maryland that includes .shp files of roads, rivers, rails, lakes and contours at scale equivalents from 1:100k to 1:1 mil. Most data originates from DCW and the World Resource Institute's 1995 Africa Data Sampler.
Canada	Natural Resources Canada's - GEOConnexions Discovery Portal, from Canada's national mapping agency, with lots of good information about data and products, but little in the way of free downloads GeoGratis, from Natural Resources Canada, is a comprehensive, and very slick, site for free vector data from several different datasets as well as satellite imagery over Canada.
British Columbia	BioRain - GIS data in shapefile format, focus on biological resources
Central African Republic	CARPE, or the Central African Regional Program for the Environment, is a program sponsored by USAID with a GIS data site hosted by University of Maryland that includes .shp files of roads, rivers, rails, lakes and contours at scale equivalents from 1:100k to 1:1 mil. Most data originates from DCW and the World Resource Institute's 1995 Africa Data Sampler. Also includes population data, protected areas coverages and vegetation data.
China	CIESIN - Population, boundary, economics and other data in E00 format, generally at 1:1mill scale equivalent, for ftp download The China Data Center at the University of Michigan has a wide variety of online GIS data, including many population and economic coverages, generally at a scale of 1:1 million or smaller China in Time and Space (CITAS) from the University of Washington has population and economic data down to county level
Congo	CARPE, or the Central African Regional Program for the Environment, is a program sponsored by USAID with a GIS data site hosted by University of Maryland that includes .shp files of roads, rivers, rails, lakes and contours at scale equivalents from 1:100k to 1:1 mil. Most data originates from DCW and the World Resource Institute's 1995 Africa Data Sampler. Also includes population data, protected areas coverages and vegetation data.
Costa Rica	The Costa Rica Geospatial Data Clearinghouse is a cooperative effort of the University of Kansas, the Organization for Tropical Studies (OTS), and the USGS Eros Data Center (EDC). This clearinghouse node is a prototype for the Inter-American Geospatial Data Network (IGDN), and focuses primarily on biodiversity and natural resource maps.
Czech Republic	Czech Office for Surveying, Mapping and Cadastre -?lt;/td>
Democratic Republic of Congo	CARPE, or the Central African Regional Program for the Environment, is a program sponsored by USAID with a GIS data site hosted by University of Maryland that includes .shp files of roads, rivers, rails, lakes and contours at scale equivalents from 1:100k to 1:1 mil. Most data originates from DCW and the World Resource Institute's 1995 Africa Data Sampler. Also includes population data, protected areas coverages and vegetation data.
Denmark	Denmark's national mapping agency Baltic Sea Region GIS - a result of the EU-sponsored Baltic Drainage Basin Project. Boundaries, population, land use, drainage coverages in Arc/Info, MapInfo and IDRISI formats
Equatorial Guinea	CARPE, or the Central African Regional Program for the Environment, is a program sponsored by USAID with a GIS data site hosted by University of Maryland that includes .shp files of roads, rivers, rails, lakes and contours at scale equivalents from 1:100k to 1:1 mil. Most data originates from DCW and the World Resource Institute's 1995 Africa Data Sampler. Also includes population data, protected areas coverages and vegetation data.
Estonia	Baltic Sea Region GIS - a result of the EU-sponsored Baltic Drainage Basin Project. Boundaries, population, land use, drainage coverages in Arc/Info, MapInfo and IDRISI formats Estonian Atlas - can't download data, but a good, large scale interactive map capability
Fiji (yes, Fiji)	Prototype Social Atlas of Fiji - by Marc Schlossberg, a Peace Corps Volunteer with Fiji's Ministry for Regional Development from 1995 to 1997; can't get at the data, but the maps are great
Finland	National Land Survey of Finland - lots of data, lots of formats, pay for access to most of it, but a free site with a viewing capability Baltic Sea Region GIS - a result of the EU-sponsored Baltic Drainage Basin Project. Boundaries, population, land use, drainage coverages in Arc/Info, MapInfo and IDRISI formats
Gabon	CARPE, or the Central African Regional Program for the Environment, is a program sponsored by USAID with a GIS data site hosted by University of Maryland that includes .shp files of roads, rivers, rails, lakes and contours at scale equivalents from 1:100k to 1:1 mil. Most data originates from DCW and the World Resource Institute's 1995 Africa Data Sampler. Also includes population data, protected areas coverages and vegetation data.
Germany	Bundesamt fur Kartographie und Geodesie - German national mapping agency; Working Committee of the Surveying Authorities of the States of the FRG (AdV)- information about products, links to state mapping agencies where much of the data is located Polish Academy of Science has a page of links to sites pertaining to GIS in Germany, to include data sources
Hungary	The Institute of Geodesy, Cartography and Remote Sensing
Iceland	Java-based Iceland Transportation GIS application
Italy	TuttoCitta has a great interactive map that goes down to city street level with various coverages that can be turned on or off- kind of a high-content MapQuest(r)-like page for Italy The Military Geography Institute of Italy has a page with a catalogue of available digital products and ordering information
Japan	The International Steering Committee for Global Mapping has a 1:1 million VPF data set produced by the Japan Geographical Survey Institute (GSI). GSI is one of the principal founders of this global mapping effort. Geological Survey of Japan - allegedly acces to DEMs and other data Japan Map Center - They don't quite have the English language version bug-free yet, but I'm sure there's a wealth of information here for those who speak the language (and have a Japanese character set) Geographical Survey Institute
Laos	The International Steering Committee for Global Mapping has a 1:1 million VPF data set produced by the National Geographic Department of Laos
Latvia	Baltic Sea Region GIS - a result of the EU-sponsored Baltic Drainage Basin Project. Boundaries, population, land use, drainage coverages in Arc/Info, MapInfo and IDRISI formats
Lithuania	Baltic Sea Region GIS - a result of the EU-sponsored Baltic Drainage Basin Project. Boundaries, population, land use, drainage coverages in Arc/Info, MapInfo and IDRISI formats
Malaysia	Malaysia's National Land Information System - Data access page
Mexico	INEGI, the Instituto Nacional de Estadistica, Geografica e Informatica, has a data page with lots of economic and demographic statistics, as well as information about digital topographic data at various scales, ordering instructions, and a viewer to check out a nationwide 1:1 million scale equivalent vector database. CIESIN, Columbia University - Population Database of Mexico;?Urban Place Coverage, Mexican Localities and states; Raster Based Coverage of Mexican Population; E00 format
Nepal	The International Steering Committee for Global Mapping has a 1:1 million VPF data set produced by the Survey Department of Nepal
Netherlands	Topographic Service of the Netherlands -?lt;/li> Polish Academy of Science has a page of links to sites pertaining to GIS in the Netherlands, to include data sources
New Zealand	Land Information New Zealand is the national mapping agency, with several textual databases online, limited access to raster versions of stnadard small scale maps, and instructions for ordering vector data.
Nicaragua	Clearinghouse de Datos Geoespaciales de Nicaragua originated in the USGS-led mapping effort in the wake of Hurricane Mitch in 1998. The site has good metadata coverage of a wide range of political, economic and natural resource data, along with jpg's of maps of much of the data, but no downloadable files in any GIS format.
Norway	Statens Kartwerk; apparently has access to free data with a registration. I don't handle Norwegian well so can't really tell for certain.
Philippines	The International Steering Committee for Global Mapping has a 1:1 million VPF data set produced by the Philippines National Mapping and Resource Information Authority
Poland	Baltic Sea Region GIS - a result of the EU-sponsored Baltic Drainage Basin Project. Boundaries, population, land use, drainage coverages in Arc/Info, MapInfo and IDRISI formats Polish Academy of Science has a page of links to sites pertaining to GIS in Poland, to include data sources
Portugal	Instituto Portugues de Cartografia e Cadastro - Cities: Lisbon: INFORLISBOA is a comprehensive municipal data site with a wide range of downloadable coverages as well as a digital map library.
Qatar	Qatar's Centre for GIS - Good site, interactive map server, data for sale only
Romania	Geo Strategies SA - Commercial firm; selling detailed topo, cadastral, geophysical and other data for Romania, with similar sets available for other eastern European countries
Russia	University of Washington library - eOO and shp files of Russian oblast and rayon (1st and 2nd order admin divisions) boundaries The Ethnic Territories of Russia GIS Project, from Dr Robert Kaiser at the University of Wisconsin, is a rayon-level database of socioeconomic and demographic data in shapefile format Polish Academy of Science has a page of links to sites pertaining to GIS in Russia, to include data sources
Slovenia	Surveying and Mapping Authority of the Republic of Slovenia - ordering information
South Africa	The National Spatial Information Framework has metadata searchable through either a forms based or a map interface
Spain	Centro Nacional de Informacion Geografica (CNIG) -
Sri Lanka	The International Steering Committee for Global Mapping has a 1:1 million VPF data set produced by the Survey Department of Sri Lanka
Sweden	National Land Survey of Sweden Baltic Sea Region GIS - a result of the EU-sponsored Baltic Drainage Basin Project. Boundaries, population, land use, drainage coverages in Arc/Info, MapInfo and IDRISI formats
Switzerland	Swiss Federal Office of Topography KOGIS is a Swiss interdepartmental GIS coordinating body
Thailand	Thailand Environment Institute's Environmental Information Center - limited 250k scale data available for download, other for purchase The International Steering Committee for Global Mapping has a 1:1 million VPF data set produced by the Royal Thai Survey Department
United Kingdom	UK Ordnance Survey - downloadable maps, software and data Polish Academy of Science has a page of links to sites pertaining to GIS in the UK, to include data sources The Streetmap Atlas of the UK is an interactive address matching application
United States	The Federal Geographic Data Center National Geospatial Data Clearinghouse has a metadata search capability that can help you locate data you need, which you can often then access through other links on this page Climatic data across the US, in E00 format, including monthly precip maps, from the Oregon Climate Service Environmental Protection Agency; pages at the GIS site include access to EPA's National Shape File Repository, as well as a broader collection of environmental related data in other formats FEMA Map Service Center GEOComm.com offers: free download of 1990 census data, including county boundaries, cities and towns, states, federal and indian lands; files are in SDTS and SHP format, tarred and gzipped. free download of DTED Level 0 elevation data over the US from the National Imagery and Mapping Agency. Data is packaged in 10 degree cells, zipped other files, including transportation, geology, hydrography, and National Wetlands Inventory info in SDTS and SHP formats, indexed from this page. Go to the "state list," pick a state, and then go to a specific county to get access to free downloads of USGS DRG raster maps at 24k, 100k and 250k scales in GeoTIFF format; and DLG vector data, by feature class, in SDTS format. MicroSoft TerraServer US Geological Survey - ftp access to DEM and DLG data at multiple scales throughout the US USGS provides a list of links to free downloads of DRG data, by state The USGS National Aerial Photography Program has an interactive search and retrieval system US National Park Service - GIS page US Census Bureau TIGER homepage TIGER files in ArcView shp format Interactive map page - specify an area and a detail level and generate a vector based map; access other Census data and build thematic maps US Agriculture Department - The Natural Resources Conservation Service node on the NSDI, coverages of land use, plants, soils, climate, water US Transportation Department The GIS page of the Bureau of Transportation Statistics - great site for links; or go straight to the: Page with links to GIS transportation data for metropolitan planning organizations across the US
Alabama	Geological Survey of Alabama maintains the Alabama GIS clearinghouse node US Forest Service Southern Region GIS data page for Alabama has resource oriented SHP files and DRG's Cities: The Mobile GIS page has an interactive map that serves various layers from the city's GIS
Alaska	Alaska State Geospatial Data Clearinghouse has comprehensive metadata listing, with links to agency sites with some of the data for download Alaska Geospatial Data Clearinghouse BioRain - GIS data in shapefile format, focus on biological resources National Park Service Alaska System Support Office: Data for Alaska's National Parks in Arc/Info format Cities: The Municipality of Anchorage GIS page has lists of available data and other useful information; data itself is distributed on CD-ROM. Resource Data Inc. has taken much of the Municipality of Anchorage data, converted it to shapefiles, and made it available for download.
Arizona	Arizona Land Resource Information System - Metadata and ordering info for statewide data, no downloads The Arizona Geographic Information Council is a coordinating body, the site has links to a wide array of data providers at state and local level in AZ The Arizona Regional Image Archive, sponsored by University of Arizona, provides access to USGS DRG's and DOQ's, along with a wide array of LANDSAT images; follow the link to 'images'. Arizona Dept of Water Resources - Downloadable data relating to water supply, ArcView and ArcInfo format The Southwest Data Center, Inc has data and links covering the Colorado Plateau, and is a NSDI node Counties: Pima County (includes Tucson) Dept of Trans GIS Services page - Data layers viewable through AutoDesk MapGuide, direct access to transportation, property data, as well as Arizona statewide data Prescott/Yavapai County - data for sale Cities: Phoenix - data for sale on CD Scottsdale's Digital Map Center has online mapping via Autodesk Sedona GIS site Tucson has an interactive map query system with several layers of data
Arkansas	Center for Advanced Spatial Studies, from the University of Arkansas in Fayetteville. University of Arkansas also provides the GeoStor, which serves a multitude of data, including the full suite of USGS raster and vector datasets over Arkansas; TIGER line files; and many thematic files derived by the University and the state of Arkansas. Cities: Fayetteville has a great site with imagery in Mr Sid or tif, shape files, and other data.
California	California State Lands Commission - DRG's; lots of ArcInfo format data on natural resource distribution LUPIN: California Resources Agency's Land Use Planning Information System, a great starting point for California data, statewide and by locality BioRain - GIS data in shapefile format, focus on biological resources The Stephen P. Teale Data Center provides access with a fee to data from across dozens of California state government entities The Tahoe Regional Planning Agency maintains TEGIS, the Tahoe Environmental GIS, with shape files for download Cities: Bakersfield GIS page Fresno Dept of Public Utilities site provides an Autodesk MapGuide interface with utilities data Los Angeles InfoLA interactive data explorer; also data ordering info from the LA Bureau of Engineering and the Bureau's Cadastral GIS page Ontario GIS page Riverside GIS Dept- access to data through an interactive map; Riverside County also has a GIS page The Sacramento Map Information page has a series of ESRI-based interactive maps San Bernardino has an ESRI-based map server San Diego Association of Governments GIS site - ArcInfo format for download; transport, boundaries, administration, natural resources, etc San Francisco Bay Area GIS resource page maintained by the USGS, focus is environmental, with reams of analysis and products The Vallejo Economic Development Information System provides a Java-based parcel search application
Colorado	Colorado Division of Local Government's Cartography page has access to a wide range of coverages in E00 format Colorado Dept of Transportation, extensive downloadable data, again in E00 format The Southwest Data Center, Inc has data and links covering the Colorado Plateau, and is a NSDI node Counties: Arapahoe County (Aurora) Map page isn't really a GIS link- list of hard copy maps available with price info Boulder County Land Use Dept has a page with lots of maps from their GIS dept but no direct access to data El Paso County (Colorado Springs) Map page has interactive parcel viewer and precinct maps, some other prepared maps, no direct access to data Jefferson County (Golden) GIS page has DRG's, sales of other data, and some interesting products, including 3D renderings Mesa County (Grand Junction) GIS site has data, maps, an interactive viewer, and ArcExplorer
Connecticut	Map and Geographic Info Center - MIF and E00 coverages of a wealth of state-produced and maintained data, plus DRGs and DEMs UNH Dimond Library - Historical topo maps of New England - jpeg format, about 1.5 to 2 meg each, maps going back as far as 1893
Delaware	The Delaware Spatial Data Clearinghouse node; includes a link to a great list of state, county and local sites maintaining and providing GIS data Research Data Management Services at the University of Delaware serves DRG and DLG for the entire state
Florida	Florida Dept of Environmental Protection site has extensive E00 files for export, large collection of links to other sources The Florida Data Directory, from the Florida Geographic Information Board, is a large data library with robust search and query capability Florida Geographic Data Library, University of Florida - An emormous collection of data, now available for download. All the metadata is here. The Land Boundary Information System from the state Dept of Environmental Protection serves DRG's South Florida Regional Planning Council GIS Site has natural resources and other environmental data The South Florida Water Management District's SWIM (Surface Water Improvement and Management) Plan has a GIS with reams of detailed topographic, hydrogaphic, natural resource and cultural data available in shapefile format Counties: Broward County (includes Ft. Lauderdale) GIS site has data in multiple formats, plus pdf preview views of layers Lee County Property Appraiser's Office has an interactive GIS site using a Citrix plugin Martin County GIS site has extensive data and prepared maps Okaloosa County (with Ft Walton Beach) GIS page has lots of info, a few simple maps, littler direct access to GIS ready data Seminole County GIS site; comprehensive county data in SHP format, plus lots of links to other GIS resources Cities: Ft. Lauderdale GIS page has both an interactive mapping capability and downloads of data in SHP, E00 and DXF formats Jacksonville's interactive map page served via an ESRI application, using the City's GIS data Miami-Dade County GIS Office- Access to metadata Tallahassee/Leon County GIS page has limited data for download, access to metadata for an extensive selection of data for sale; also online mapping
Georgia	Georgia Spatial Data Infrastructure, with a link to the GA clearinghouse hosting a wide range of federal and state economic, demographic, transportation, and other thematic data, primarily in E00 format; or use the site's 'data discoverer' The Centers for Spatial Analysis Technologies incorporates separate but related efforts from the USGS and Georgia Tech; the site provides USGS products as well as data from a number of other national and state agencies. Georgia Dept of Natural Resources Statewide GIS Atlas, federal and state data. Direct access to downloads through the metadata pages for each coverage. Counties: Chatham County/City of Savannah GIS includes an interactive map and direct access to E00 files for download Cobb County GIS page, located on the north side of Atlanta, includes Marietta and Smyrna Haralson County data portal page includes topo maps and DOQs among a large array of other historical and contemporary demographic and economic data; west of Atlanta
Hawaii	Hawaii Statewide GIS Program - Hawaii's node, together with a link to download ArcExplorer Cities: Honolulu GIS page has interactive maps and ftp access to the underlying data
Idaho	Interior Columbia Basin Ecosystem Management Project - 170 coverages, various formats but much is apparently ASCII text that would need to be converted into a suitable GIS format Idaho Dept of Lands/GIS - The Idaho clearinghouse node The Greater Yellowstone Area Data Clearinghouse has downloadable DEM's and DOQQ's, plus metadata for a wide array of data from multiple agencies in the three-state Yellowstone area
Illinois	Illinois Natural Resources Geospatial Data Clearinghouse, statewide data for multiple themes in E00 format, DRGs in GeoTIFF, with a reproject utility Cities: Chicago's Spatial Data Clearinghouse page is a cooperative effort from the Northeast Illinois Panning Commission and the University of Illinois at Chicago
Indiana	The Lake Rim GIS from the Indiana Geological Survey covers Northwest Indiana and provides downloadable data with a primarily natural resource and environmental orientation. Cities: Indianapolis GIS page The Electronic Atlas of Central Indiana is produced by the Indiana University-Purdue University Indianapolis University Libraries, and has downloadable data from national and state sources for the nine counties of the Indianapolis MSA DeKalb County and the cities of Auburn, Butler and Garrett are partners in CoCiGIS, or county-city GIS, the site contains project info but as of last check just the promise of data
Iowa	The Iowa GIS Clearinghouse node has data, internet mapping applications, and other info Iowa Dept of Natural resources - general and resource related coverages at state and local level, E00 and SHP format Iowa Dept of Lands has image and vector data for download, plus several map servers available for on-line viewing and manipulation Counties: Polk County (includes Des Moines) GIMS database is an Intergraph GeoMedia Web Map application for real estate parcel information Shelby County has formatted maps and a parcel search utility
Kansas	State of Kansas GIS Initiative Data Access Page, huge collection of USGS and state-generated data with full metadata and ftp access Counties: Johnson County's (includes Olathe) Automated Information Mapping System page
Kentucky	Kentucky's Office of Geographic Information - NSDI node; DEM's, DLG's, DRG's Kentucky Geological Survey has zipped shape files of standard USGS products over the state, as well as state data for roads, geology, hydrology and natural resources
Louisiana	The Louisiana Geographic Information Center, or go straight to their Atlas for direct access to DOQs, DRGs, and various vector coverages and other data Louisiana Department of Environmental Quality data page has ArcView and ARC/INFO formatted data for aquifers and drainage basins.
Maine	Maine Office of GIS, data catalog with access to all coverages in E00 format Kennebunk- Town GIS office has form to request Autocad or ArcView files
Maryland	MERLIN, or the Maryland Environmental Resources & Land Information Network, has a Java-based interactive map browser and composer GIS Online is an interactive application that accesses real estate data and school information by county across Maryland Cities: The Baltimore Metropolitan Council's MetroMapping page describes the Baltimore basemap (at a 1:24k scale equivalent) and provides information on obtaining mapping services
Massachusetts	MassGIS, download orthophotos in TIFF or MrSID format, comprehensive vector data tilled by county or statewide in E00 or SHP format The Massachusetts Electronic Atlas advertises over 250 data layers, courtesy of Harvard University UNH Dimond Library - Historical topo maps of New England - jpeg format, about 1.5 to 2 meg each, maps going back as far as 1893 Cities: Town of Brookline GIS site has lots of jpg and pdf maps, but you have to pay for the data. Springfield's GIS page has a promise of a system to be fielded
Michigan	The Michigan Information Center is a state government agency that hosts the state clearinghouse node as well as other useful GIS-related information Michigan's Department of Natural Resources Spatial Data Library has a great collection of data with all the standard state-level stuff plus plenty of extras, together with access to viewers and detailed instructions University of Michigan Map Library- access to data is restricted Counties: Oakland County (Detroit metro area) GIS home page has extensive Arc/Info coverages with full metadata Wayne County (includes Detroit) has a site for The Rouge River Project, which has extensive documentation of a GIS project focused on river habitat restoration in an urban area
Minnesota	Minnesota Land Management Info Center provides the Minnesota Geographic Data Catalog Cities: Minneapolis/St Paul:MetroGIS Datafinder accesses GIS data by theme, contributor or metadata search; maps on line as well.
Mississippi	Mississippi Automated Resource Information System (MARIS) - Wide variety of coverages, E00 and SHP format
Missouri	Missouri Spatial Data Information System - Missouri's NSDI node, downloadable through ftp in E00 format, with metadata
Montana	Montana State Library Natural Resource Information System - Extensive list of statewide data, vector data in E00 and SHP formats with illustrative graphics, plus some image data Interior Columbia Basin Ecosystem Management Project - 170 coverages, various formats but much is apparently ASCII text that would need to be converted into a suitable GIS format The Greater Yellowstone Area Data Clearinghouse has downloadable DEM's and DOQQ's, plus metadata for a wide array of data from multiple agencies in the three-state Yellowstone area
Nebraska	Nebraska node of the National Spatial Data Infrastrucure - forms based query access, pretty awkward Nebraska Dpet of Natural Resources Databank has a variety of national and state level data
Nevada	Virtual Clearinghouse for Nevada Geographic Information - run by state Bureau of Mines and Geology; links to multiple state and local data sources Bureau of Mines data page - DRGs plus geologic maps and other geologic data The Tahoe Regional Planning Agency maintains TEGIS, the Tahoe Environmental GIS, with shape files for download Counties: Clark County (southern NV, includes Las Vegas area)GIS Management Office is a great local government GIS site!
New Hampshire	GRANIT - Land use, physical,?and other state-wide data UNH Dimond Library - Historical topo maps of New England - jpeg format, about 1.5 to 2 meg each, maps going back as far as 1893
New Jersey	The New Jersey Dept of Environmental Protection has a slick site with data downloadable in multiple formats, some also viewable over a Java based ArcView IMS application. Lots of other info and resources as well. Princeton University's GIS data page for NJ - DEM's, DLG's, DRG's Regional: North Jersey Transportation Planning Authority GIS Atlas presents lots of info in map form, limited acccess to the actual data
New Mexico	The New Mexico Resource GIS includes the state's clearinghouse node The Southwest Data Center, Inc has data and links covering the Colorado Plateau, and is a NSDI node Cities: Albuquerque GIS Website provides an interactive map interface Gallup/McKinley County - downloadable, ArcInfo format
New York	NY State Office of Technology's NY State GIS Clearinghouse site - comprehensive site, lots of downloadable data; includes a fast and easy DRG download page Counties: Erie County (includes Buffalo) Planning Division has a detailed list of data available Monroe County (Rochester) GIS page has nothing now but promises Internet accessible data during 2000 Suffolk County has a variety of data in E00 format Tompkins County, includes Ithaca, has a good, data rich site. Special feature is a great collection of high-res scans of historical maps of New York and the Ithaca/Finger Lakes area. Cities: City of Ithaca GIS page New York City: The Dept of City Planning has tax block and street data for sale in various GIS formats, for download in Adobe The Digital Atlas of New York City, a project from the Cal State Univ, Northridge, has some interesting maps but no downloadable data
North Carolina	North Carolina Spatial Data Clearinghouse - NC's node on the NSDI, extensive searchable metadata directory, no downloads NC State University's GIS Library - Access to huge amounts of national, state and local data Counties: Cabarrus County GIS page; Concord is the main town Caldwell County GIS page with SDE map server Forsyth County interactive mapper Mecklenburg County and the City of Charlotte have a GIS site with a number of on-line applications Stanly County GIS page has a map server application and downloadable data Union County, including the city of Monroe, has a wide range of data for download in shapefile, ArcInfo export, and Autocad formats Cities and other localities: Durham GIS Dept has means to order data, plus interactive mapping capability Ft Bragg's Integrated Training Area Management GIS page has a form for requesting maps or data, but no direct access
North Dakota	The North Dakota Spatial Data Clearinghouse has all the USGS data along with geological and water resource coverages for download
Ohio	Ohio Dept of Administrative Services' Ohio Geographically Referenced Info Program (OGRIP) has a geodata page with downloadable products, primarily USGS products over Ohio Dept of Natural Resources Geographic Info Management Systems (GIMS) has searchable metadata and ordering info Dept of Transportation GIS page has downloadable DGN files Counties: Greene County GIS page has a map server with a wide variety of available data Hamilton County (includes Cincinatti) Regional Planning Commission has preformatted maps of the county and all townships and municipalities Lucas County/Toledo interactive real estate GIS Warren County GIS page has samples and ordering info
Oklahoma	Spatial and Environmental Information Clearinghouse form Oklahoma State University is the OK node on the NSDI
Oregon	State Service Center for GIS - Oregon's Clearinghouse node; DRG and DOQ (pointers to a site where DOQ can be downloaded, see REO below) for sale, other data downloadable Regional Ecosystem Office - DRG's for Oregon and Washington, plus forest data, BLM data, and links to several national forest GIS pages with downloadable data Interior Columbia Basin Ecosystem Management Project - 170 coverages, various formats but much is apparently ASCII text that would need to be converted into a suitable GIS format BioRain - GIS data in shapefile format, focus on biological resources Coastal data at the Oregon Coast Geospatial Clearinghouse Winema National Forest GIS page - lots of data, including spotted owl range data; e00 format Oregon Water Resources Dept - water rights data in e00 or shp format Counties: Deschutes County GIS page has data for sale in multiple formats, promises an interactive atlas application Jackson County (includes Medford) GIS page serves maps and selected data via 'Smartmap' Marion County (Salem) Mapping and Information Services has data and a nice interactive city street atlas Multnomah County (includes Portland) GIS page has a limited number of maps Washington County (part of the Portland metro area)Map page has thematic maps and an interactive mapping capability Cities: Portland's Metro GIS has fully viewable metadata with most of the data itself for sale on CD; there is also a tri-county interactive map called MetroMap
Pennsylvania	Pennsylvania Spatial Data Access - PA's node on the NSDI; DOQ's, DEM's, DRG's, and reams of other downloadable data Dept of Environmental Protection has a great site, with an interactive application to view permit data and access to lots of data
Rhode Island	Rhode Island GIS - free access with registration UNH Dimond Library - Historical topo maps of New England - jpeg format, about 1.5 to 2 meg each, maps going back as far as 1893
South Carolina	SC Dept of Natural Resources maintains the SC clearinghouse node University of South Carolina's GIS Data Server Counties: Richland County, includes Columbia, has a good site with an interactvie map server and wide variety of data
Tennessee	Cities: Knoxville and Knox County have a GIS page, but no data served as of Jun 00
Texas	Texas Natural Resources Information System - The Texas clearinghouse node; go straight to the data catalog The Texas General Land Office has GIS data for download on oil spills, the Texas Wetland Information Network, and the Texas Coastal Natural Resources Inventory Texas Natural Resources Conservation Commission has a GIS site with DRG's and resource-specific maps and data Sabine Basin GIS Clearinghouse is a node on the NSDI Regional: The North Central Texas Council of Governments 'DFWMaps' page (as in 'Dallas-Ft Worth') has an extensive collection of data from national, state and local sources for cities (including Dallas, Ft Worth, Garland, Irving and Arlington) and counties in North Central Texas Cities: UT Austin page with links to downloadable shp files for Austin, Round Rock, central Texas and statewide The Harris County Public Infrastructure Dept has a large range of data in shp format for the Houston area Houston/Galveston Area Council - ArcExport and shp files Lubbock GIS page has base maps, planning maps and utilities in DGN and DXF formats
Utah	State Geographic Information Database - extensive E00 format, downloadable with metadata Cities: Salt Lake City GIS page has interactive mapping capability and a wide range of downloadable SHP files
Vermont	Vermont Center for Geographic Information- NSDI node UNH Dimond Library - Historical topo maps of New England - jpeg format, about 1.5 to 2 meg each, maps going back as far as 1893
Virginia	Virginia Department of Transportation has county road map files in ARC/INFO format - no download, CD only Virginia Tech Library has DRG's and other data via ftp University of Virginia Library's Geostat - GIS data includes VA DEM's and DRG's, some data restricted to UVa people only. Also, check out the interactive TIGER data browser- select layers, view a display of data selected, and download resulting files; a great capability Cities: The Town of Blacksburg GIS page Roanoke GIS offers an interactive parcel lookup capability Virginia Beach GIS Dept - ordering info, no downloads
Washington	The Washington State NSDI clearinghouse node, from the Washington Geographic Information Council and the Univ of Washington; metadata, links to partner sites with downloads Washington State Dept of Transportation - Some files available for download Washington State Dept of Ecology has a variety of data for downlaod in .e00 format Interior Columbia Basin Ecosystem Management Project - 170 coverages, various formats but much is apparently ASCII text that would need to be converted into a suitable GIS format Regional Ecosystem Office - DRG's for Oregon and Washington, plus forest data, BLM data, and links to several national forest GIS pages with downloadable data BioRain - GIS data in shapefile format, focus on biological resources The Olympic Natural Resource Center's Clearinghouse for the Olympic Peninsula - spatial and biological data with metadata Counties: Clark County interactive mapping capability King County/Seattle: The King County GIS Center has ftp access, full metadata, lots of data available; the county Dept of Development and Environmental Services GIS page has many finished maps in PDF format, plus an interactive land parcel map Pierce County/Tacoma- access to GIS data through an ESRI-based interactive map San Juan County GIS page has shape files for download Snohomish County, including Everett and Glacier Peak, has data to purchase on CD Spokane County/Spokane GIS map site has image files of thematic maps, no direct access to data
West Virginia	West Virginia University's West Virginia GIS Technical Center is a National Clearinghouse node Department of Environmental Protection - Vector coverages in SHP format, plus DEM, DRG, DLG from USGS
Wisconsin	Wisconsin Land Information Clearinghouse - Statewide data in E00 and SHP format downloadable, links to other sources of Wisconsin data Wisconsin Department of Natural Resources GIS page Wisconsin State Cartographer's page has GIS info and other resources Counties: Dane County (includes Madison) GIS page is an extensive page with data ordering info Winnebago County (includes Oshkosh) GIS page has interactive mapping capability and info for ordering SHP files Cities: DePere Map page has downloadable SHP files Milwaukee's GIS Office provides property data by CD-ROM
Wyoming	The Wyoming GIS Science Center is Wyoming's node on the NSDI; a large variety of coverages, E00 and SHP formats, as well as image data available for download The Greater Yellowstone Area Data Clearinghouse has downloadable DEM's and DOQQ's, plus metadata for a wide array of data from multiple agencies in the three-state Yellowstone area Wyoming Geographic Information Advisory Council - links to statewide and local agencies, many with downloadable data available
Uruguay	Uruguay's Clearinghouse Nacional de Datos Geograficos - free downloads with registration
Vietnam	BDT & Associates has physical, social and political data over Vietnam in MapInfo format, with high resolution urban sets for Hanoi and Ho Chi Minh City. Most is for purchase (expensive), but a free point file of 1100 populated places is available.

The Mapdawg pages:

	Mapdawg home
	GIS Organizations- links to selected organizations involved in the production, use, and development of GIS and related geographic tools and spatial data
	GIS Software- Primarily vendors
	Geography and GIS Resources on the internet- sites with general info on the field
	The Mapdawg Old Map page steps back in time away from the GIS high tech world
	send email to the Mapdawg

Other stuff:

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	Mario's Cyberspace Station, a wonderful and unique news site, courtesy of my friend, Mario Profaca