United States
United States
Alexandria Digital Library: Americas
United States
Chesapeake Bay Physical geography Chesapeake Bay Bolide: Modern Consequences of an Ancient Cataclysm ::http://woodshole.er.usgs.gov/epubs/bolide/ Watershed management Chesapeake Bay Program ::http://www.chesapeakebay.net/ Grand Canyon National Park Flood control Controlled Flooding of the Colorado River in Grand Canyon ::http://h2o.usgs.gov/public/wid/FS_089-96/FS_089-96.html National parks and reserves Controlled Flooding of the Colorado River in Grand Canyon ::http://h2o.usgs.gov/public/wid/FS_089-96/FS_089-96.html Grand Canyon Explorer ::http://www.kaibab.org/ Greater Yellowstone Area Geographic information systems Greater Yellowstone Area Data Clearinghouse ::http://sun1.giac.montana.edu/gyadc/gyadchome.html Hawaiian Islands Aerial photographs NOS Aerial Photography - Hawaiian Islands ::http://www8.nos.noaa.gov/biogeo_public/aerial/search.aspx Bathymetric mapping USGS: Pacific Sea-Floor Mapping ::http://walrus.wr.usgs.gov/pacmaps/ Digital mapping Digital Elevation Models for the Main Eight Hawaiian Islands ::http://ccma.nos.noaa.gov/products/biogeography/mapping/dems/index.shtml USGS: Pacific Sea-Floor Mapping ::http://walrus.wr.usgs.gov/pacmaps/ Juan de Fuca Ridge (Pacific Ocean) Digital mapping The CoAxial Segment of the Juan de Fuca Ridge ::http://www.pmel.noaa.gov/vents/coax/coax.html Hydrothermal vents The CoAxial Segment of the Juan de Fuca Ridge ::http://www.pmel.noaa.gov/vents/coax/coax.html Mississippi River Basin Herbicides Midcontinent Agricultural Chemical Research Project ::http://webserver.cr.usgs.gov/midconherb/ Watershed management Midcontinent Agricultural Chemical Research Project ::http://webserver.cr.usgs.gov/midconherb/ Missouri River Basin Rivers Missouri River InfoLINK ::http://infolink.cr.usgs.gov/ New England Atlases Atlas of the Flora of New England ::http://neatlas.huh.harvard.edu/ Cartography The Cartographic Creation of New England ::http://www.usm.maine.edu/~maps/exhibit2/ Earthquakes Weston Observatory - Boston College ::http://www.bc.edu/research/westonobservatory/ Historical geography - Maps Osher Map Library: The Percy Map ::http://www.usm.maine.edu/~maps/percy/ Historical geography Old Maps of New England ::http://www.oldmapsne.com/ Maps Old Maps of New England ::http://www.oldmapsne.com/ Phytogeography Atlas of the Flora of New England ::http://neatlas.huh.harvard.edu/ Topographic maps Historic USGS Maps of New England & New York ::http://docs.unh.edu/nhtopos/nhtopos.htm Southern New England Climate National Weather Service Forecast Office, Boston MA ::http://www.erh.noaa.gov/er/box/ Southern New England Interactive Map ::http://www.erh.noaa.gov/box/areamap.shtml Tennessee Valley Catalogs, Publishers' Tennessee Valley Authority Map & Photo Records ::https://maps.tva.com/ United States, Central Digital mapping USGS Central Region - Publications ::http://greenwood.cr.usgs.gov/ Oceanography Interactive Tide Chart - Location Form ::http://www1.low-tide.com:8080/tide/tideform.html Tides Interactive Tide Chart - Location Form ::http://www1.low-tide.com:8080/tide/tideform.html United States, Eastern Topographic maps Maptech: Historical Topographic Maps ::http://historical.maptech.com/ United States, Gulf Coast Historical geography - Maps Gulf Coast Historic Maps ::ftp://mcmcftp.er.usgs.gov/Katrina/508dpi/ United States, Midwest El Niño Current El Niño and the Midwest ::http://www.sws.uiuc.edu/atmos/statecli/ElNino/elnino.htm Mussels Field Guide to Freshwater Mussels of the Midwest ::http://www.inhs.uiuc.edu/cbd/collections/mollusk/fieldguide.html United States, Northeast Floods The Real Waterworld ::http://www.clockwk.com/waterworld/index.html Global warming The Real Waterworld ::http://www.clockwk.com/waterworld/index.html Phytogeography Northeast Wetland Flora ::http://www.npwrc.usgs.gov/resource/plants/florane/list.htm Wetlands Northeast Wetland Flora ::http://www.npwrc.usgs.gov/resource/plants/florane/list.htm United States, Northern Great Plains Remote-sensing images DIGITAL Northern Great Plains (Digital-NGP) ::http://digital-ngp.umac.org/ United States, Northern Plains Clouds Nocturnal Fog and Stratus Over the Northern Plains ::http://cimss.ssec.wisc.edu/goes/misc/981102.html Fog Nocturnal Fog and Stratus Over the Northern Plains ::http://cimss.ssec.wisc.edu/goes/misc/981102.html United States, Northwest Atlases Virtual Atlas of the Pacific Northwest ::http://academic.evergreen.edu/projects/virtualatlas/ Avalanches Northwest Weather and Avalanche Center ::http://www.nwac.noaa.gov/ Earthquakes Recent earthquakes in Pacific Northwest ::http://www.geophys.washington.edu/recenteqs/ Forests and forestry Pacific Northwest Forest Inventory and Analysis ::http://www.fs.fed.us/pnw/fia/ United States, Southeast Fisheries NOAA NMFS Southeast Fisheries Science Center ::http://www.sefsc.noaa.gov/ United States, Southern Forest health Southern Forest Health Atlas of Insects and Diseases ::http://www.fs.fed.us/r8/foresthealth/atlas/index.shtml Phytogeography Southern Wetland Flora ::http://www.npwrc.usgs.gov/resource/plants/floraso/index.htm Wetlands Southern Wetland Flora ::http://www.npwrc.usgs.gov/resource/plants/floraso/index.htm United States, Southwest Geographic information systems USDA Forest Service - GIS Data, Southwestern Region ::http://www.fs.fed.us/r3/gis/datasets.shtml Historical geography - Maps Maps of the Pimería: Early Cartography of the Southwest ::http://parentseyes.arizona.edu/pimeriamaps/ United States, South Floods The Real Waterworld ::http://www.clockwk.com/waterworld/index.html Global warming The Real Waterworld ::http://www.clockwk.com/waterworld/index.html United States, Upper Midwest Earth sciences Upper Midwest Aerospace Consortium (UMAC) ::http://www.umac.org/ Environmental sciences USGS Upper Midwest Environmental Sciences Center ::http://www.umesc.usgs.gov/ United States, Western Biogeography UCSB Biogeography Lab ::http://www.biogeog.ucsb.edu/ Birds - Geographical distribution Birds as Indicators of Riparian Vegetation ::http://www.npwrc.usgs.gov/resource/birds/ripveg/index.htm Earthquakes Western States Seismic Policy Council ::http://www.wsspc.org/ Geographic information systems GEO/Graphics Inc. ::http://www.geograph.com/ Marine geophysics USGS CMG InfoBank ::http://walrus.wr.usgs.gov/infobank/ USGS Western Region Coastal and Marine Geology ::http://walrus.wr.usgs.gov/ Riparian ecology Birds as Indicators of Riparian Vegetation ::http://www.npwrc.usgs.gov/resource/birds/ripveg/index.htm United States Administrative and political divisions Evolution of United States County Boundaries ::http://www.ac.wwu.edu/~stephan/Animation/us.gif Fast Facts for Congress ::http://fastfacts.census.gov/home/cws/main.html Formation of the Contiguous United States ::http://www.ac.wwu.edu/~stephan/48states.html U.S. Census Bureau Cartographic Boundary Files ::http://www.census.gov/geo/www/cob/index.html Aerial photographs - Indexes ER-2 Flight Summary Reports ::http://asapdata.arc.nasa.gov/er-2fsr.htm Aerial photographs Aerial Photography Field Office ::http://www.apfo.usda.gov/ Aerials Express Digital Aerial Photography ::http://aerials-express.com/aex/aex-public/default.aspx Airphoto Library Sources List ::http://www.geo-tech-imagery.com/airphoto.htm AirPhotoUSA ::http://www.airphotousa.com/ Image Trader ::http://www.landsat.com/index.html Multivision USA: Oblique Imagery on Demand ::http://www.mv-usa.com/ NOAA's National Ocean Service: Aerial Photography and Shoreline Mapping ::http://oceanservice.noaa.gov/topics/navops/mapping/welcome.html National Aerial Photography Program (NAPP) ::http://edc.usgs.gov/products/aerial/napp.html Pacific Aerial Surveys- Historic and New Aerial Photography, Image Interpretation, and Expert Witness Testimony ::http://www.pacificaerial.com/ USGS Aerial Photos on PhotoFinder ::http://edcsns17.cr.usgs.gov/photofinder USGS General Aerial Photograph Information ::http://www.usgs.gov/pubprod/aerialsatellite.html USGS Survey Photography ::http://edc.usgs.gov/products/aerial/survey.html Aeronautical charts SkyVector.com - Aeronautical Charts - Flight Planning ::http://skyvector.com/ Agricultural productivity USDA-NASS, Crop Acreage and Yield Maps ::http://www.usda.gov/nass/aggraphs/cropmap.htm Air - Pollution EPA AirData - Access to Air Pollution Data ::http://www.epa.gov/air/data/index.html Air quality AIRNow ::http://airnow.gov/ Airport noise Metropolitan Airports Commission ::http://www.macavsat.org/ Almanacs 50 States and Capitals ::http://www.50states.com/ Statistical Abstract of the United States ::http://www.census.gov/compendia/statab/ ePodunk - Profiling more than 27,000 communities across America ::http://www.epodunk.com/ Altitudes - Measurement Highest, Lowest, and Mean Elevations in the United States ::http://www.infoplease.com/ipa/A0001792.html Altitudes National Elevation Dataset ::http://ned.usgs.gov/ USGS Elevation Program ::http://rmmcweb.cr.usgs.gov/elevation/ Archives National Archives and Records Administration ::http://www.nara.gov/ Artificial satellites NOAASIS - NOAA Satellite Information System ::http://noaasis.noaa.gov/NOAASIS/ Atlases 1895 U.S. Atlas ::http://www.livgenmi.com/1895/ Atlas of Historical County Boundaries ::http://www.newberry.org/ahcbp/ Color Landform Atlas of the United States ::http://fermi.jhuapl.edu/states/states.html Digital Atlas of the United States ::http://130.166.124.2/USpage1.html Ground Water Atlas of the United States ::http://capp.water.usgs.gov/gwa/ National Atlas home page ::http://www.nationalatlas.gov/index.html National Atlas of the United States of America ::http://www-atlas.usgs.gov/ Statistical Atlas of the United States Based on the Results of the Ninth Census 1870 ::http://fraser.stlouisfed.org/publications/sat1870/ U.S. Census Bureau Census Atlas of the United States ::http://www.census.gov/population/www/cen2000/censusatlas/ Atmosphere - Research NOAA's Office of Oceanic and Atmospheric Research ::http://www.oar.noaa.gov/ Atmosphere NOAA's National Weather Service ::http://www.nws.noaa.gov/ Bathymetric mapping NGDC/WDC MGG, Boulder - Coastal Relief Model ::http://www.ngdc.noaa.gov/mgg/coastal/coastal.html Bench-marks NGS Data Sheets ::http://www.ngs.noaa.gov/cgi-bin/datasheet.prl Biogeochemistry Vegetation/Ecosystem Modeling and Analysis Project (VEMAP) ::http://www.daac.ornl.gov/VEMAP/vemap.html Biogeography Illinois State Museum Faunmap ::http://www.museum.state.il.us/research/faunmap/ National Biological Information Infrastructure (NBII) ::http://www.nbii.gov/ National Gap Analysis Program ::http://gapanalysis.nbii.gov/ Northern Prairie Wildlife Research Center ::http://www.npwrc.usgs.gov/ U.S. Fish and Wildlife Service ::http://www.fws.gov/ Vegetation/Ecosystem Modeling and Analysis Project (VEMAP) ::http://www.daac.ornl.gov/VEMAP/vemap.html Biology NBII Metadata Clearinghouse Gateway ::http://metadata.nbii.gov/ National Biological Information Infrastructure (NBII) ::http://www.nbii.gov/ USGS Biological Resources Division ::http://biology.usgs.gov/ Biotic communities Description of the Ecoregions of the United States ::http://www.fs.fed.us/land/ecosysmgmt/ecoreg1_home.html USDA Forest Service - National Resource Assessment and Analysis - Ecoregions Center ::http://www.fs.fed.us/rm/analytics/publications/ecoregionsindex.html Birds - Geographical distribution Bird Checklists of the United States ::http://www.npwrc.usgs.gov/resource/birds/chekbird/index.htm Burial Nationwide Gravesite Locator ::http://gravelocator.cem.va.gov/j2ee/servlet/NGL_v1 Campaign finance Presidential Campaign Finance ::http://www.fec.gov/DisclosureSearch/mapApp.do Cartography 1895 U.S. Atlas ::http://www.livgenmi.com/1895/ American Geographical Society Library ::http://www.uwm.edu/Libraries/AGSL/ Catalogs, Publishers' A Guide to the Cartographic Products of the Federal Depository Library Program (FDLP) ::http://magert.whoi.edu/pubs/FDLPguide.html ChartTiff Geo's ::http://www.charttiff.com/ GeoData Software Systems ::http://www.geodatas.com/ GEOLEX - National Geologic Map Database ::http://ngmdb.usgs.gov/Geolex/geolex.html Historic Atlas Series: 19th Century County Maps ::http://www.historic-atlas-series.com/ Maptech ::http://www.maptech.com/ National Geographic Maps | Trails Illustrated Search by State ::http://maps.nationalgeographic.com/search_by_state/ TOPO! Interactive Maps ::http://www.topo.com/ The Gold Bug ::http://www.goldbug.com/ USGS Store ::http://store.usgs.gov/ Census 1990 Census ::http://www.census.gov/main/www/cen1990.html 2005 Second Edition TIGER/Line® Files ::http://www.census.gov/geo/www/tiger/tiger2005se/tgr2005se.html American FactFinder ::http://factfinder.census.gov/ Census 2000 Block Maps ::http://www.census.gov/geo/www/maps/descriptwindows/census_blockmaps.htm Census 2000 Gateway ::http://www.census.gov/main/www/cen2000.html Census 2000 Gazetteer Files ::http://www.census.gov/geo/www/gazetteer/places2k.html Census 2000 TIGER/Line Data ::http://www.esri.com/data/download/census2000_tigerline/index.html Census 2000: Working with Maps ::http://www.levergood.net/barbara/census/preconference2002.html GeoFRED ::http://geofred.stlouisfed.org/ Historical Census - National Historical Geographic Information System (NHGIS) ::http://www.nhgis.org/nhgis-files/documentation/historical-census/?searchterm=historical MABLE/Geocorr 2K Vers. 1.3 ::http://mcdc2.missouri.edu/websas/geocorr2k.html Map Sheet Corner Point Coordinate Files ::http://www.census.gov/geo/www/tiger/rd_2ktiger/pl_maps/cornerpt/cornerpt.html NARA 1930 Census Microfilm Locator ::http://1930census.archives.gov/ National Historical Geographic Information System (NHGIS) ::http://www.nhgis.org/ National Historical Geographic Information System (NHGIS) Census Tract Geography Finder ::http://beta.nhgis.org/geography/ Social Explorer ::http://www.socialexplorer.com/pub/home/home.aspx State and County Quick Facts ::http://quickfacts.census.gov/qfd/ TIGER Map Service ::http://tiger.census.gov/cgi-bin/mapbrowse TIGER/Line Files ::http://www.icpsr.umich.edu/TIGER/ U.S. Census Bureau - TIGER®, TIGER/Line® and TIGER-Related Products ::http://www.census.gov/geo/www/tiger/ U.S. Census Bureau Census Atlas of the United States ::http://www.census.gov/population/www/cen2000/censusatlas/ U.S. Census Bureau Data Access Tools ::http://www.census.gov/main/www/access.html U.S. Census Bureau Geography Division Map Gallery ::http://www.census.gov/geo/www/mapGallery/index.html U.S. Census Bureau Home Page ::http://www.census.gov/ U.S. Census Bureau Maps and Cartographic Resources ::http://www.census.gov/geo/www/maps/ U.S. Census Bureau ZIP Code® Tabulation Areas (ZCTAs) ::http://www.census.gov/geo/ZCTA/zcta.html U.S. Department of Housing and Urban Development's (HUD) Boundary Files Download Site ::http://www.huduser.org/geo/summarylevel.asp ZIPskinny - Enter your ZIP code to see U.S. Census data and comparisons with neighboring ZIPs ::http://www.zipskinny.com/ Cities and towns Cities & Towns Maps Home Page ::http://lcweb2.loc.gov/ammem/gmdhtml/cityhome.html The USA CityLink Project ::http://www.usacitylink.com/citylink/ Climate Climate Prediction Center ::http://www.cpc.ncep.noaa.gov/ Earth System Research Laboratory : Physical Sciences Division : United States Climate Page ::http://www.cdc.noaa.gov/USclimate/states.fast.html MesoWest Data ::http://www.met.utah.edu/mesowest/ NCDC: Climate of 2000 - October ::http://www.ncdc.noaa.gov/oa/climate/research/2000/oct/us_national.html NCDC: National Climatic Data Center ::http://www.ncdc.noaa.gov/oa/ncdc.html NCDC: U.S. Climate Normals ::http://hurricane.ncdc.noaa.gov/cgi-bin/climatenormals/climatenormals.pl NOAA Weather Theme Page ::http://www.noaa.gov/wx.html NOAA's National Weather Service ::http://www.nws.noaa.gov/ National Climatic Data Center (NCDC) ::http://www.ncdc.noaa.gov/ Climatic changes Department of Energy - Climate Change ::http://www.energy.gov/environment/climatechange.htm EPA Climate Change ::http://www.epa.gov/climatechange/ EPA Global Warming: State by State Impacts ::http://yosemite.epa.gov/oar/globalwarming.nsf/content/ImpactsStateImpacts.html Coastal zone management NOAA Coastal Services Center ::http://www.csc.noaa.gov/ Oceans and Coastal Protection Home ::http://www.epa.gov/owow/oceans/ Oceans and Coastal Protection: Coastal Watersheds ::http://www.epa.gov/owow/oceans/factsheets/ Coasts NOAA National Coastal Data Development Center ::http://www.ncddc.noaa.gov/ Crops and climate USDA - National Agricultural Statistics Service Weekly Crop Weather ::http://www.usda.gov/nass/pubs/staterpt.htm Dams National Inventory of Dams ::http://crunch.tec.army.mil/nidpublic/webpages/nid.cfm Damselflies - Geographical distribution - Maps Dragonflies and Damselflies (Odonata) of the United States ::http://www.npwrc.usgs.gov/resource/distr/insects/dfly/dflyusa.htm Data structures - Standards FGDC Standards ::http://www.fgdc.gov/standards/ Demography Federal Electronic Research and Review Extraction Tool ::http://ferret.bls.census.gov/ Males per 100 Females, United States, 1790-1990 ::http://www.ac.wwu.edu/~stephan/Animation/sexratios.html Social Explorer ::http://www.socialexplorer.com/pub/home/home.aspx TIGER Map Service ::http://tiger.census.gov/cgi-bin/mapbrowse TIGER/Line Files ::http://www.icpsr.umich.edu/TIGER/ U.S. Census Bureau - TIGER®, TIGER/Line® and TIGER-Related Products ::http://www.census.gov/geo/www/tiger/ U.S. Demography Home Page ::http://www.ciesin.org/datasets/us-demog/us-demog-home.html Digital mapping 2001 National Transportation Atlas Data ::http://www.bts.gov/gis/ntatlas/background.html Cartographic Resources - Digital Elevation Models ::http://130.166.124.2/dems.html Dynamic Maps of Nonprime Mortgage Conditions in the United States ::http://www.newyorkfed.org/mortgagemaps/ EnviroMapper for Envirofact ::http://maps.epa.gov/enviromapper/ EnviroMapper StoreFront ::http://www.epa.gov/enviro/html/em/index.html GISDATA Map Studio ::http://gisdata.usgs.gov/ Graphical Locater Home Page ::http://www.esg.montana.edu/gl/ Guide To On-line And Mostly Free U.S. Geospatial and Attribute Data ::http://libinfo.uark.edu/gis/us.asp Land Use Land Cover 100K ::ftp://edcftp.cr.usgs.gov/pub/data/LULC/100K/ Land Use Land Cover 250K ::ftp://edcftp.cr.usgs.gov/pub/data/LULC/250K/ MAGERT Education Committee Page ::http://magert.whoi.edu/pubs/gisguide.html Map Layers Warehouse ::http://www-atlas.usgs.gov/atlasftp.html Maps On Demand ::http://rockyweb.cr.usgs.gov/mod/ Metropolitan Airports Commission ::http://www.macavsat.org/ National Geographic Maps ::http://www.topo.com/ National Geospatial-Intelligence Agency ::http://www.nga.mil/ National Land Cover Data 1992 single file coverage ::http://cdiac.ornl.gov/datasets/spatial/NLCD92/NLCD92.html Nursing Home Info Map Search ::http://www.nursinghomeinfo.com/search.html Physical Map of the Coterminous United States ::http://www.shadedrelief.com/physical/usa_zoom.htm Proximity ::http://www.proximityone.com/ Some examples of the JHU/APL maps as a web resource ::http://fermi.jhuapl.edu/states/web_sites.html TIGER Map Service ::http://tiger.census.gov/cgi-bin/mapbrowse TIGER/Line Files ::http://www.icpsr.umich.edu/TIGER/ TerraFly ::http://www.terrafly.com/ The Electronic Map Library ::http://130.166.124.2/library.html TopoDepot ::http://www.topodepot.com/ TopoZone - The Web's Topographic Map ::http://www.topozone.com/ TruFlite's 3D World ::http://www.truflite.com/ U.S. Census Bureau - TIGER®, TIGER/Line® and TIGER-Related Products ::http://www.census.gov/geo/www/tiger/ USDA - NRCS Geospatial Data Gateway ::http://datagateway.nrcs.usda.gov/ USDA Forest Service - maps.fs.fed.us ::http://maps.fs.fed.us/ USGS - Standardized Digital Raster Graphics Data Set Names ::http://topomaps.usgs.gov/drg/drg_name.html USGS Data ::ftp://edcftp.cr.usgs.gov/pub/data/ USGS Digital Raster Graphics ::http://topomaps.usgs.gov/drg/ USGS Geo Data ::http://edcwww.cr.usgs.gov/doc/edchome/ndcdb/ndcdb.html USGS National Map Viewer ::http://nmviewogc.cr.usgs.gov/viewer.htm USGS: The National Map ::http://nationalmap.usgs.gov/ Yahoo! Maps ::http://maps.yahoo.com/yahoo/ Directories 50 States and Capitals ::http://www.50states.com/ BigBook: Yellow Pages ::http://www.bigbook.com/ Bright Pages - Yellow Pages Search Engine ::http://www.brightpages.com/ Discrimination in mortgage loans Racial Redlining Report Maps ::http://www.public-gis.org/maps/maps1.html Dragonflies - Geographical distribution - Maps Dragonflies and Damselflies (Odonata) of the United States ::http://www.npwrc.usgs.gov/resource/distr/insects/dfly/dflyusa.htm Distances Distance to the nearest road in the conterminous United States ::http://www.fort.usgs.gov/products/publications/21426/21426.pdf Droughts Climate Prediction Center - Expert Assessments: United States Seasonal Drought Outlook ::http://www.cpc.noaa.gov/products/expert_assessment/seasonal_drought.html Drought Monitor ::http://www.drought.unl.edu/dm/index.html Early maps Digital Versions of Historic Maps ::http://www.goldbug.com/digitalmaps.html Historical Map & Chart Project Image Catalog ::http://historicals.ncd.noaa.gov/historicals/histmap.asp USGS: Historic Maps from the Library of Congress Archives ::http://store.usgs.gov/historicmapsfromlca/ Earth sciences American Geological Institute ::http://www.agiweb.org/ GEON - Geosciences Network ::http://www.geongrid.org/ Geoscience Information Society ::http://www.geoinfo.org/ USGS Photo Library Archive ::http://libraryphoto.cr.usgs.gov/ Earthquakes Latest Earthquakes in the USA ::http://earthquake.usgs.gov/eqcenter/recenteqsus/ National Earthquake Information Center ::http://wwwneic.cr.usgs.gov/ National Information Service for Earthquake Engineering ::http://nisee.berkeley.edu/ USGS Earthquake Hazards Program » Custom Mapping and Analysis Tools ::http://earthquake.usgs.gov/research/hazmaps/interactive/index.php USGS Earthquake Hazards Program » USGS National Seismic Hazard Maps ::http://earthquake.usgs.gov/research/hazmaps/ USGS Earthquake Information by State ::http://earthquake.usgs.gov/regional/states.php USGS National Seismic Hazard Mapping Project ::http://eqhazmaps.usgs.gov/ Ecological mapping EPA Ecoregion Maps and GIS Resources ::http://www.epa.gov/wed/pages/ecoregions.htm Economics FRASER » Federal Reserve Archival System for Economic Research ::http://fraser.stlouisfed.org/ Ecosystem management USDA Forest Service - Planning Analysis Group (PAG) and Inventory and Monitoring Institute (IMI) ::http://www.fs.fed.us/institute/ Election districts LC-American Memory: Places in the News ::http://lcweb2.loc.gov/ammem/gmdhtml/plnews.html Elections Geostat Center: Collection: US and Virginia Election Data & Maps ::http://fisher.lib.virginia.edu/collections/stats/elections/index.html Electronic journals Directions Magazine - Mapping and Demographics News Source ::http://www.directionsmag.com/ Emergency management Emergency Response & Research Institute ::http://www.emergency.com/ Endangered species Endangered Species Program ::http://endangered.fws.gov/ English Language - Phonology, Comparative Phonological Atlas of North America ::http://www.ling.upenn.edu/phono_atlas/home.html Environmental health U.S. - Mexico Border Environmental Health Initiative ::http://borderhealth.cr.usgs.gov/ Environmental management EPA Environmental Information Management System ::http://www.epa.gov/eims/ Environmental sciences EPA - U.S. Environmental Protection Agency ::http://www.epa.gov/ MEERC Home Page ::http://www.hpl.umces.edu/meerc/ Maps On Demand ::http://rockyweb.cr.usgs.gov/mod/ Master Environmental Library ::http://mel.dmso.mil/ NOAA Environmental Information Service ::http://www.eis.noaa.gov/esdim/ Epidemiology Comprehensive Epidemiologic Data Resource ::http://cedr.lbl.gov/ Estuaries National Estuary Program ::http://www.epa.gov/nep/ Fall foliage USDA Forest Service - Fall Colors ::http://www.fs.fed.us/news/fallcolors/ Faults (Geology) USGS Quaternary Fault and Fold Database ::http://pubs.usgs.gov/fs/2004/3033/fs-2004-3033.html Fire risk assessment National Weather Service National Fire Weather Page ::http://fire.boi.noaa.gov/ Fisheries NOAA National Marine Fisheries Service (NMFS) ::http://www.nmfs.noaa.gov/ Floods FEMA Flood Map Service Center ::http://store.msc.fema.gov/ FEMA Flood Recovery Data ::http://www.fema.gov/hazard/flood/recoverydata/index.shtm Forest fires InciWeb: National Incidents ::http://www.inciweb.org/ USDA Forest Service - Fire and Aviation Management ::http://www.fs.fed.us/fire/ USDA Forest Service - Fire Effects Information System (FEIS) ::http://www.fs.fed.us/database/feis/ USDA Forest Service - Large Fire Incidents Page ::http://activefiremaps.fs.fed.us/lg_fire2.php USDA Forest Service - MODIS Active Fire Mapping Program ::http://activefiremaps.fs.fed.us/ Forest management USDA Forest Service - Remote Sensing Applications Center ::http://www.fs.fed.us/eng/rsac/index.html Forests and forestry USDA Forest Service FSGeodata Clearinghouse ::http://fsgeodata.fs.fed.us/ USDA Forest Service Home Page ::http://www.fs.fed.us/ USDA Forest Service - Forest Inventory and Analysis National Program ::http://fia.fs.fed.us/ USDA Forest Service - Publications ::http://www.fs.fed.us/publications/ Gazetteers U.S. Census Bureau U.S. Gazetteer ::http://www.census.gov/cgi-bin/gazetteer Geodesy Crustal Dynamics Data Information System (CDDIS) ::http://cddis.nasa.gov/ NGS Data Sheets ::http://www.ngs.noaa.gov/cgi-bin/datasheet.prl National Geodetic Survey Home Page ::http://www.ngs.noaa.gov/ The NGS Geodetic Tool Kit ::http://www.ngs.noaa.gov/TOOLS/ Geodynamics Crustal Dynamics Data Information System (CDDIS) ::http://cddis.nasa.gov/ Geographic information systems - Study and teaching ESRI - Digital Orthophotography and GIS ::http://gis.esri.com/library/userconf/proc95/to150/p124.html Geographic Information Systems ::http://erg.usgs.gov/isb/pubs/gis_poster/ MapCruzin ::http://www.mapcruzin.com/ USGS National Geologic Map Database - Image Library georeferencing tutorial ::http://ngmdb.usgs.gov/Info/imlibhelp/georef/ Geographic information systems A National Database of GIS Data ::http://www.cast.uark.edu/local/catalog/national/ Berkeley/Penn Urban & Environmental Modeler's Datakit - Home ::http://www.dcrp.ced.berkeley.edu/research/footprint/ Bureau of Land Management (BLM) Geospatial Support Team ::http://www.blm.gov/gis/ EPA Databases and Software - Geographic Information Systems ::http://www.epa.gov/epahome/gis.htm EPA's National Geospatial Program ::http://geodata.epa.gov/ GIS - National Park Service Geographic Information Systems (GIS) ::http://www.nps.gov/gis/ GPS Visualizer: Convert (geocode) street addresses to coordinates ::http://www.gpsvisualizer.com/convert?form=address GRASS Info ::http://www.cecer.army.mil/grass/ Geodata.gov ::http://www.geodata.gov/ Geospatial Data Clearinghouse ::http://clearinghouse1.fgdc.gov/ Guide To On-line And Mostly Free U.S. Geospatial and Attribute Data ::http://libinfo.uark.edu/gis/us.asp Libre Map Project - Free Maps and GIS data ::http://libremap.org/ NCDC GIS Portal ::http://gis.ncdc.noaa.gov/ NOS Data Explorer ::http://nosdataexplorer.noaa.gov/nosdataexplorer/ NPS Data Store ::http://science.nature.nps.gov/nrdata/ National Center for Geographic Information and Analysis ::http://www.ncgia.ucsb.edu/ Remote Sensing and GIS - U.S. Bureau of Reclamation ::http://www.usbr.gov/pmts/rsgis/ U.S. Army Corps of Engineers Geospatial Data Clearinghouse Node ::http://corpsgeo1.usace.army.mil/ USGS Fire Planning and Mapping Tools ::http://wildfire.cr.usgs.gov/fireplanning/ USGS General Software Information ::http://www.usgs.gov/pubprod/software.html USGS National Geospatial Program Office (NGPO) ::http://www.usgs.gov/ngpo/ USGS Software Library ::http://rmmcweb.cr.usgs.gov/software/ USGS: Public Domain Software for Use with USGS Geographic Data ::http://edc.usgs.gov/geodata/public.html nowCOAST: GIS Mapping Portal to Real-Time Environmental Observations and NOAA Forecasts ::http://www.nowcoast.noaa.gov/ Geographical location codes Free Geocoding, Address Processing, and GIS Data Capture ::https://webgis.usc.edu/ GPS Visualizer: Convert (geocode) street addresses to coordinates ::http://www.gpsvisualizer.com/convert?form=address Geography - Study and teaching The Geographer's Craft Project ::http://www.colorado.edu/geography/gcraft/contents.html Geology - Maps - Study and teaching What is a geologic map? ::http://www2.nature.nps.gov/geology/usgsnps/gmap/gmap1.html Geology - Maps Geological Society of America - Online Maps ::http://gsamaps.gsajournals.org/gsamaps/toc USGS Mineral Resources Program's National Surveys and Analysis Projects - Digital State Geologic Maps ::http://minerals.usgs.gov/projects/surveys_and_analysis/dig_geol_maps.html Geology - Study and teaching USGS Education ::http://education.usgs.gov/ Geology Ask USGS ::http://ask.usgs.gov/ USGS Coastal and Marine Geology Program ::http://marine.usgs.gov/ USGS Geologic Discipline ::http://geology.usgs.gov/index.shtml USGS Geoscience data catalog ::http://geo-nsdi.er.usgs.gov/ USGS Home Page ::http://www.usgs.gov/ USGS National Geologic Lexicon Database ::http://ngmdb.usgs.gov/Geolex/geolex_home.html USGS National Geologic Map Database ::http://ngmdb.usgs.gov/ USGS OFR 2005-1323: Preliminary Integrated Geologic Map Databases for the United States: Alabama, Florida, Georgia, Mississippi, North Carolina, and South Carolina ::http://pubs.usgs.gov/of/2005/1323/ USGS OFR 2005-1324: Preliminary Integrated Geologic Map Databases for the United States: Kentucky, Ohio, Tennessee, and West Virginia ::http://pubs.usgs.gov/of/2005/1324/ USGS OFR 2005-1325: Preliminary Integrated Geologic Map Databases for the United States: Delaware, Maryland, New York, Pennsylvania, and Virginia ::http://pubs.usgs.gov/of/2005/1325/ USGS OFR 2005-1342: Preliminary Integrated Geologic Map Databases for the United States: Digital Data for the Geology of Wrangell-Saint Elias National Park and Preserve, Alaska ::http://pubs.usgs.gov/of/2005/1342/ USGS OFR 2005-1351: Preliminary integrated geologic map databases for the United States: Central States: Montana, Wyoming, Colorado, New Mexico, North Dakota, South Dakota, Nebraska, Kansas, Oklahoma, Texas, Iowa, Missouri, Arkansas, and Louisiana ::http://pubs.usgs.gov/of/2005/1351/ USGS OFR 2006-1290: Preliminary Integrated Geologic Map Databases for the United States: Digital Data for the Geology of Southeast Alaska ::http://pubs.usgs.gov/of/2006/1290/ USGS OFR 2006-1292: Preliminary Integrated Geologic Map Databases for the United States: Digital Data for the Reconnaissance Geologic Map of the lower Yukon River region, Alaska ::http://pubs.usgs.gov/of/2006/1292/ USGS OFR 2006-1302: Preliminary Integrated Geologic Map Databases for the United States: Digital Data for the Reconnaissance Geologic Map of the Western Aleutian Islands, Alaska ::http://pubs.usgs.gov/of/2006/1302/ USGS OFR 2006-1303: Preliminary Integrated Geologic Map Databases for the United States: Digital Data for the Reconnaissance Bedrock Geologic Map for the Northern Alaska Peninsula area, Southwest Alaska ::http://pubs.usgs.gov/of/2006/1303/ USGS OFR 2006-1304: Preliminary Integrated Geologic Map Databases for the United States: Digital Data for the Generalized Bedrock Geologic Map, Yukon Flats region, East-central Alaska ::http://pubs.usgs.gov/of/2006/1304/ Geomorphology Color Landform Atlas of the United States ::http://fermi.jhuapl.edu/states/states.html NGDC/WDC MGG, Boulder - Coastal Relief Model ::http://www.ngdc.noaa.gov/mgg/coastal/coastal.html Geophysics MIT - Earth Resources Laboratory ::http://eaps.mit.edu/erl/ Global Positioning System University NAVSTAR Consortium (UNAVCO) ::http://www.unavco.org/ Global warming EPA Global Warming: State by State Impacts ::http://yosemite.epa.gov/oar/globalwarming.nsf/content/ImpactsStateImpacts.html lightblueline | Drawing the Line Against Human Induced Climate Change ::http://www.lightblueline.org/ Government information Google U.S. Government Search ::http://www.google.com/ig/usgov GovEngine.com - Federal, State & Local Government and Court Resources ::http://govengine.com/ USA.gov: The U.S. Government's Official Web Portal ::http://www.usa.gov/ Groundwater EPA Ground Water and Drinking Water ::http://epa.gov/safewater/ Ground Water Atlas of the United States ::http://capp.water.usgs.gov/gwa/ Ground Water Data for the Nation ::http://waterdata.usgs.gov/nwis/gw Hazardous substances - Transportation National Hazardous Material Route Registry ::http://hazmat.fmcsa.dot.gov/ Health ATSDR - Agency for Toxic Substances and Disease Registry ::http://www.atsdr.cdc.gov/ Health Resources and Services Administration (HRSA) Geospatial Data Warehouse ::http://datawarehouse.hrsa.gov/ Heart - Diseases Division for Heart Disease and Stroke Prevention - Maps Home Page ::http://www.cdc.gov/dhdsp/library/maps/ Herpetology FrogWeb: Amphibian Declines & Deformities ::http://www.frogweb.gov/ Historic sites - Baseball Fields Historic Baseball Fields - Panoramic Maps ::http://mysite.verizon.net/jgflat/ Historical geography - Maps Cultural Maps ::http://xroads.virginia.edu/~MAP/map_hp.html Historical Maps of the United States ::http://www.lib.utexas.edu/Libs/PCL/Map_collection/histus.html Historical geography Alaska and Hawaii ::http://darkwing.uoregon.edu/~atlas/america/static/map14.html Compromise of 1850 : Status of Slavery ::http://darkwing.uoregon.edu/~atlas/america/interactive/map20.html Cotton Production in the American South: 1790-1860 ::http://darkwing.uoregon.edu/~atlas/america/interactive/map15.html Discovering Lewis & Clark® ::http://www.lewis-clark.org/ European Possessions Bordering the U.S. : 1783 ::http://darkwing.uoregon.edu/~atlas/america/static/map04.html Exploring the West from Monticello: A Perspective in Maps from Columbus to Lewis and Clark ::http://www.lib.virginia.edu/exhibits/lewis_clark/home.html Gadsden Purchase & Proposed Rail Routes : 1853 ::http://darkwing.uoregon.edu/~atlas/america/interactive/map13.html Jackson's Campaigns in Florida : 1818 ::http://darkwing.uoregon.edu/~atlas/america/static/map07.html Journeys of Lewis & Clark : 1804-1806 ::http://darkwing.uoregon.edu/~atlas/america/interactive/map06.html Kansas-Nebraska Act : 1854 ::http://darkwing.uoregon.edu/~atlas/america/interactive/map21.html Louisiana Purchase : 1800-1803 ::http://darkwing.uoregon.edu/~atlas/america/interactive/map05.html Mexican Cession: Political Boundaries ::http://darkwing.uoregon.edu/~atlas/america/interactive/map12.html Native American Tribes : 1783 ::http://darkwing.uoregon.edu/~atlas/america/static/map03.html Oregon Country : 1843-1848 ::http://darkwing.uoregon.edu/~atlas/america/interactive/map10.html Slave Crops in the American South: 1860 ::http://darkwing.uoregon.edu/~atlas/america/static/map16.html Slavery in the American South: 1790-1860 ::http://darkwing.uoregon.edu/~atlas/america/interactive/map17.html Status of Slavery in Original 13 States ::http://darkwing.uoregon.edu/~atlas/america/interactive/map18.html Territorial Expansion of the United States : 1783-1853 ::http://darkwing.uoregon.edu/~atlas/america/interactive/map01.html Territory ceded by Spain : from 1810 to 1819 ::http://darkwing.uoregon.edu/~atlas/america/interactive/map08.html Texas : 1836 ::http://darkwing.uoregon.edu/~atlas/america/static/map09.html The Missouri Compromise : 1820 ::http://darkwing.uoregon.edu/~atlas/america/interactive/map19.html The War with Mexico: 1823-1846 ::http://darkwing.uoregon.edu/~atlas/america/interactive/map11.html United States after the Treaty of Paris : 1783 ::http://darkwing.uoregon.edu/~atlas/america/interactive/map02.html Human geography University of Virginia Library Geographic Information Center ::http://www.lib.virginia.edu/gic Hydrography USGS: National Hydrography Dataset ::http://nhd.usgs.gov/ Hydrology National Operational Hydrologic Remote Sensing Center ::http://www.nohrsc.nws.gov/ USGS Hydrologic Unit Maps ::http://water.usgs.gov/public/GIS/huc.html USGS Water Resources of the United States ::http://water.usgs.gov/ Insurance, Fire Union List of Sanborn and Other Fire Insurance Maps ::http://www.lib.berkeley.edu/EART/sanbul.html Land use NRCS National Resources Inventory ::http://www.nrcs.usda.gov/technical/NRI/ NRCS State of the Land ::http://www.nrcs.usda.gov/technical/land/ National Land Cover Data 1992 single file coverage ::http://cdiac.ornl.gov/datasets/spatial/NLCD92/NLCD92.html The Center for Land Use Interpretation - CLUI ::http://www.clui.org/ Map projection State Plane Coordinate System - Designations ::http://home.comcast.net/~rickking04/gis/spc.htm Township/Range to Lat/Lon ::http://www.esg.montana.edu/gl/trs-data.html Maps - Indexes FTP site for Geodex ::ftp://ftp.csd.uwm.edu/pub/geodex/ MapFinder ::http://ella.slis.indiana.edu/~jfieber/mapfinder/ Maps - Study and teaching Finding Your Way with Map and Compass ::http://erg.usgs.gov/isb/pubs/factsheets/fs03501.html Maps, Tourist State Government Sources: State Maps ::http://www.evergreen.edu/library/govdocs/statemaps/index.html Maps Exploring the West from Monticello: A Perspective in Maps from Columbus to Lewis and Clark ::http://www.lib.virginia.edu/exhibits/lewis_clark/home.html NARA Cartographic and Architectural Records ::http://www.archives.gov/research/formats/cartographic.html Panoramic Maps Collection ::http://lcweb2.loc.gov/ammem/pmhtml/panhome.html Roadmap Collectors of America ::http://www.roadmaps.org/ Rohrbach Library Map Collection ::http://www.kutztown.edu/library/maps/ Mayflies - Geographical distribution - Maps Mayflies of the United States ::http://www.npwrc.usgs.gov/resource/distr/insects/mfly/mflyusa.htm Medical geography CDC - Influenza (Flu) | Weekly Report: Usmap Influenza Summary Update - 2006-2007 Season ::http://www.cdc.gov/flu/weekly/usmap.htm Centers for Disease Control and Prevention ::http://www.cdc.gov/ Highly Pathogenic Avian Influenza Early Detection Data System (HEDDS) ::http://wildlifedisease.nbii.gov/ai/ USGS Disease Maps ::http://diseasemaps.usgs.gov/ Mercury EPA Mercury ::http://www.epa.gov/mercury/ EPA Mercury Maps ::http://www.epa.gov/waterscience/models/maps/ Meteorology - Observations NCDC: Locate Weather Observation Station Record ::http://www.ncdc.noaa.gov/oa/climate/stationlocator.html Mines and mineral resources USGS Mineral Resources Program ::http://minerals.er.usgs.gov/ Mortality National Center for Health Statistics (NCHS) - Atlas of United States Mortality ::http://www.cdc.gov/nchs/products/pubs/pubd/other/atlas/atlas.htm National parks and reserves - Maps NPS Maps ::http://www.nps.gov/hfc/carto/index.htm National parks and reserves GIS - National Park Service Geographic Information Systems (GIS) ::http://www.nps.gov/gis/ Mapping the National Parks ::http://memory.loc.gov/ammem/gmdhtml/nphtml/nphome.html ParkNet: The National Park Service Place on the Web ::http://www.nps.gov/ Natural disasters Applied Technology Council ::http://www.atcouncil.org/ Emergency Response & Research Institute ::http://www.emergency.com/ FEMA: 2007 Federal Disaster Declarations ::http://www.fema.gov/news/disasters.fema National Warnings Area ::http://iwin.nws.noaa.gov/iwin/nationalwarnings.html USGS Hazards ::http://www.usgs.gov/themes/hazard.html Natural resources NRCS National Resources Inventory ::http://www.nrcs.usda.gov/technical/NRI/ NRCS Natural Resources Conservation Service ::http://www.nrcs.usda.gov/ Nautical charts - Indexes Office of Coast Survey - Nautical Chart Catalogs ::http://nauticalcharts.noaa.gov/mcd/ccatalogs.htm Nautical charts Historical Map & Chart Project Image Catalog ::http://historicals.ncd.noaa.gov/historicals/histmap.asp Office of Coast Survey - On-Line Chart Viewer ::http://ocsdata.ncd.noaa.gov/OnLineViewer/ Navigation U.S. Coast Guard Navigation Center ::http://www.navcen.uscg.gov/ Neighborhoods Zillow - Labs - Neighborhood Boundaries ::http://www.zillow.com/labs/NeighborhoodBoundaries.htm Obesity Overweight and Obesity: Obesity Trends: Maps | DNPA | CDC ::http://www.cdc.gov/nccdphp/dnpa/obesity/trend/maps/index.htm Ocean NOAA's National Ocean Service (NOS) ::http://www.nos.noaa.gov/ Oceans and Coastal Protection Home ::http://www.epa.gov/owow/oceans/ Office of Wetlands, Oceans, and Watersheds ::http://www.epa.gov/OWOW/ Ocean currents NOAA Tides and Currents ::http://co-ops.nos.noaa.gov/index.shtml Oceanography - Research NOAA's Office of Oceanic and Atmospheric Research ::http://www.oar.noaa.gov/ Oceanography NOAA National Oceanographic Data Center (NODC) ::http://www.nodc.noaa.gov/ Organic farming - Maps - graphic The community of U.S. organic operations, 2007 ::http://ofrf.org/images/usmap_1280.jpg Outline maps Free Printable Maps | County, City, State Outline ::http://www.waterproof-paper.com/printable-maps/ Pesticides USGS NAWQA Pesticide National Synthesis Project ::http://ca.water.usgs.gov/pnsp/ USGS Pesticide National Synthesis Project - Annual Use Maps ::http://ca.water.usgs.gov/pnsp/pesticide_use_maps/ Photogrammetry American Society for Photogrammetry and Remote Sensing (ASPRS) ::http://www.asprs.org/ Management Association for Private Photogrammetric Surveyors (MAPPS) ::http://www.mapps.org/ Phytogeography The National Vegetation Classification System ::http://www.conserveonline.org/2001/03/p/vol1;internal&action=buildframes.action USDA, NASS Research Division ::http://www.nass.usda.gov/research/ USGS - NPS Vegetation Mapping Program: The National Vegetation Classification Standard (NVCS) ::http://biology.usgs.gov/npsveg/nvcs.html Vegetation Collections ::http://www.daac.ornl.gov/vegetation_collections.html Population Aging of the U.S., 1950-2050 ::http://www.ac.wwu.edu/~stephan/Animation/pyramid.html U.S. Census Bureau Population Estimates ::http://www.census.gov/popest/estimates.php Precipitation (Meteorology) National Atmospheric Deposition Program (NADP) ::http://nadp.sws.uiuc.edu/ Production standards USGS Standards for Digital Orthophotos ::http://rockyweb.cr.usgs.gov/nmpstds/doqstds.html Public lands Bureau of Land Management (BLM) General Land Office (GLO) Records ::http://www.glorecords.blm.gov/ Bureau of Land Management (BLM) Geographic Coordinate Data Base (GCDB) National Home Page ::http://www.blm.gov/gcdb/ Bureau of Land Management (BLM) Lands and Minerals Records - LR2000 System Home Page ::http://www.blm.gov/lr2000/ Bureau of Land Management (BLM) National Home Page ::http://www.blm.gov/ GeoCommunicator ::http://www.geocommunicator.gov/ Location Guide to the General Land Office (GLO) Survey Plats ::http://www.lib.niu.edu/ipo/1999/il9904232.html Railroads Central Pacific Railroad Photographic History Museum - Transcontinental Railroad Maps ::http://www.cprr.org/Museum/Maps/ Federal Railroad Administration Office of Safety Analysis ::http://safetydata.fra.dot.gov/OfficeofSafety/ Railroad Maps Collection ::http://memory.loc.gov/ammem/gmdhtml/rrhtml/rrhome.html Real property - Maps Bureau of Land Management (BLM) General Land Office (GLO) Records ::http://www.glorecords.blm.gov/ Location Guide to the General Land Office (GLO) Survey Plats ::http://www.lib.niu.edu/ipo/1999/il9904232.html Real property - Valuation Zillow.com ::http://zillow.com/ Real property Realtor.com ::http://www.realtor.com/ Religion Mapping religion in America ::http://regionsofmind.blog-city.com/mapping_religion_in_america.htm Remote sensing AmericaView ::http://www.americaview.org/ American Society for Photogrammetry and Remote Sensing (ASPRS) ::http://www.asprs.org/ Remote Sensing and GIS - U.S. Bureau of Reclamation ::http://www.usbr.gov/pmts/rsgis/ Remote-sensing images Image Trader ::http://www.landsat.com/index.html NEXRAD National Mosaic Reflectivity Images ::http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?WWNEXRAD~Images2 National Arcives and Records Administration ::http://www.nara.gov/ SPOT at UCSB ::http://www.spot.ucsb.edu/ Rivers American Heritage Rivers ::http://www.epa.gov/rivers/update/update.html American Rivers ::http://www.amrivers.org/ Stream Systems Technology Center ::http://www.stream.fs.fed.us/ Roads Distance to the nearest road in the conterminous United States ::http://www.fort.usgs.gov/products/publications/21426/21426.pdf Historic US Highways ::http://www.gbcnet.com/ushighways/Default.htm National Highway System ::http://www.fhwa.dot.gov/hep10/nhs/index.html National Traffic and Road Closure Information ::http://www.fhwa.dot.gov/trafficinfo/index.htm Roadmap Collectors of America ::http://www.roadmaps.org/ Salmon Pacific Coastal Salmon Recovery Fund (PCSRF) ::http://webapps.nwfsc.noaa.gov/pcsrf/ Shorelines NOAA Coastal Services Center - Shoreline Data Home ::http://www.csc.noaa.gov/shoreline/ NOAA's National Ocean Service: Aerial Photography and Shoreline Mapping ::http://oceanservice.noaa.gov/topics/navops/mapping/welcome.html Snow National Operational Hydrologic Remote Sensing Center ::http://www.nohrsc.nws.gov/ Soils NRCS NCGC Products & Services ::http://www.ncgc.nrcs.usda.gov/products/datasets/ NRCS Soil Data Mart ::http://soildatamart.nrcs.usda.gov/ NRCS Soils ::http://soils.usda.gov/ NRCS Soils: Ground-Penetrating Radar Soil Suitability Maps ::http://soils.usda.gov/survey/geography/maps/GPR/index.html NRCS Soils: Official Soil Series Descriptions (OSD) ::http://soils.usda.gov/technical/classification/osd/index.html NRCS Soils: Online Soil Survey Manuscripts ::http://soils.usda.gov/survey/online_surveys/ NRCS Soils: Soil Geography ::http://soils.usda.gov/survey/geography/ NRCS State of the Land ::http://www.nrcs.usda.gov/technical/land/ Soil Information for Environmental Modeling and Ecosystem Management ::http://www.soilinfo.psu.edu/index.cgi?index.html State Soil Geographic Database (STATSGO) ::http://www.ncgc.nrcs.usda.gov/products/datasets/statsgo/ Stoneflies - Geographical distribution - Maps Stoneflies (Plecoptera) of the United States ::http://www.npwrc.usgs.gov/resource/distr/insects/sfly/sflyusa.htm Stream measurements USGS Instantaneous Data Archive - IDA ::http://ida.water.usgs.gov/ida/ USGS Real-Time Water Data for the Nation ::http://waterdata.usgs.gov/nwis/rt USGS Surface-Water Data for the Nation ::http://waterdata.usgs.gov/nwis/sw USGS WaterWatch ::http://water.usgs.gov/waterwatch/ Telephone - Area codes Area Code Listing, by Number ::http://www.bennetyee.org/ucsd-pages/area.html JCSM county to Zip Code Input 1 page (Area Code) ::http://www.jcsm.com/county1.asp North American Numbering Plan Administration ::http://www.nanpa.com Telecom Digest Guide to Area Codes ::http://mirror.lcs.mit.edu/telecom-archives/ Thesauri CERES Thesaurus Effort ::http://ceres.ca.gov/thesaurus/ Tides NOAA Tides and Currents ::http://co-ops.nos.noaa.gov/index.shtml WWW Tide/Current Predictor - Site Selection ::http://tbone.biol.sc.edu/tide/sitesel.html Topographic maps - Bibliography Index and Inventory of USGS Maps ::http://www.mines.edu/library/maproom/ftp.html Topographic maps - Indexes MapSport - USGS Topographic Map Indexes ::http://www.mapsport.com/usgs_index.php Stanford Map Collection Index - USGS Topographical Index ::http://cgi.stanford.edu/dept/SUL/library/cgi-bin/depts/branner/show.cgi USGS Topo Index ::http://catalog.maplink.com/usgs/usa.html USGS Topo Index ::http://catalog.maplink.com/usgs/USMap.html Topographic maps - Signs and Symbols Topographic Map Symbols for Historic Topographic Maps ::http://www.novacell.com/topographicmapsymbols.php USGS Topographic Map Symbols ::http://erg.usgs.gov/isb/pubs/booklets/symbols/ Topographic maps - Study and teaching Map and Geography Library - Topographic Map Basics ::http://www.library.uiuc.edu/max/topos.shtml Topographic maps Historic, Out-of-Print, and Geologic USGS Topo Maps ::http://www.usgsquads.com/svcs_historic_maps.htm Novacell Technologies - the leading provider of historic USGS topographic maps ::http://www.novacell.com/ TopoDepot ::http://www.topodepot.com/ TopoZone - The Web's Topographic Map ::http://www.topozone.com/ US Topo ::http://nationalmap.gov/ustopo/ USGS Digital Raster Graphics ::http://topomaps.usgs.gov/drg/ USGS Historic Topographic Map Volunteer Scanning Coordination Project ::http://infotrek.er.usgs.gov/pls/htmldb/f?p=182:1:3421198413713854611 USGS Topographic Maps | Google Earth Library ::http://www.gelib.com/usgs-topographic-maps.htm USGS - Standardized Digital Raster Graphics Data Set Names ::http://topomaps.usgs.gov/drg/drg_name.html Tourist trade America's Byways™: National Scenic Byways Online ::http://www.byways.org/ Recreation.gov ::http://recreation.gov/ Toxins U.S. Toxic Maps ::http://www.mapcruzin.com/ustox.htm Traffic safety Fatality Analysis Reporting System (FARS) Web-Based Encyclopedia ::http://www-fars.nhtsa.dot.gov/ Transportation Bureau of Transportation Statistics (BTS)-Transportation Geospatial Data ::http://www.bts.gov/programs/geographic_information_services/ FHWA Freight Management and Operations - Freight Analysis Framework ::http://ops.fhwa.dot.gov/freight/freight_analysis/faf/index.htm National Highway System ::http://www.fhwa.dot.gov/hep10/nhs/index.html TranStats - Bureau of Transportation Statistics ::http://www.transtats.bts.gov/ USDOT Bureau of Transportation Statistcs - Map Gallery ::http://www.bts.gov/gis/maps/ Travel American Automobile Association ::http://www.aaa.com Ask.com Maps & Directions ::http://maps.ask.com/maps MapNation.com ::http://www.mapnation.com/ Maps On Us: A Map, Route and Yellow Pages Service ::http://www.mapsonus.com/ MaximumEdge.com Maps ::http://www.maximumedge.com/maps/ Rand McNally ::http://www.randmcnally.com ViaMichelin ::http://www.viamichelin.com/ Ultraviolet radiation USDA UVB Radiation Monitoring Program ::http://uvb.nrel.colostate.edu/UVB/home_page.html United States - History - Civil War, 1861-1865 Civil War Maps ::http://memory.loc.gov/ammem/collections/civil_war_maps/ Civil War Soldiers and Sailors System ::http://www.itd.nps.gov/cwss/ Rare Map Collection - American Civil War ::http://scarlett.libs.uga.edu/darchive/hargrett/maps/civil.html United States - Maps - Standards USGS: National Mapping Program Standards ::http://nationalmap.gov/gio/standards/ United States - Territorial expansion NYPL Map Exhibition on Westward Expansion in America ::http://www.nypl.org/west/hw_subhome.shtml Vegetation management FHWA Roadside Vegetation Management ::http://www.fhwa.dot.gov/environment/vegmgt/index.htm Views A Tapestry of Time and Terrain ::http://tapestry.usgs.gov/ CommonCensus Map Project ::http://commoncensus.org/index.php Planet 9 Studios ::http://www.planet9.com/ TruFlite's 3D World ::http://www.truflite.com/ Voter registration U.S. Census Bureau Voting and Registration Data ::http://www.census.gov/population/www/socdemo/voting.html Voting U.S. Census Bureau Voting and Registration Data ::http://www.census.gov/population/www/socdemo/voting.html Water EPA Ground Water and Drinking Water ::http://epa.gov/safewater/ USGS National Water Conditions ::http://h2o.usgs.gov/nwc/ USGS Office of Surface Water (OSW) ::http://water.usgs.gov/osw/ USGS Water Data for the Nation ::http://waterdata.usgs.gov/nwis/ USGS Water Resources of the United States ::http://water.usgs.gov/ Water - Study and teaching Water Education Foundation ::http://www.water-ed.org/ Water levels NOAA Tides and Currents ::http://co-ops.nos.noaa.gov/index.shtml Water quality NRCS State of the Land ::http://www.nrcs.usda.gov/technical/land/ National Reconnaissance of Emerging Contaminants ::http://toxics.usgs.gov/regional/emc.html Office of Water Online Reference Library ::http://www.epa.gov/waterscience/library/wqstandards/ USGS National Water Quality Assessment (NAWQA) Data Warehouse ::http://water.usgs.gov/nawqa/data USGS Water-Quality Data for the Nation ::http://waterdata.usgs.gov/nwis/qw Water resources development NPS - Water Resources ::http://www.nature.nps.gov/water/ USGS WaterWatch ::http://water.usgs.gov/waterwatch/ Water Resources Center Archives ::http://www.lib.berkeley.edu/WRCA/ Water temperature NODC Coastal Water Temperature Guide ::http://www.nodc.noaa.gov/dsdt/cwtg/ Watershed management BASINS ::http://www.epa.gov/OST/BASINS/ EPA Biological Indicators of Watershed Health ::http://www.epa.gov/bioindicators/ EPA Surf Your Watershed ::http://cfpub.epa.gov/surf/locate/index.cfm EPA Watersheds ::http://www.epa.gov/owow/watershed/ Office of Water Online Reference Library ::http://www.epa.gov/waterscience/library/wqstandards/ Watersheds EPA Surf Your Watershed ::http://cfpub.epa.gov/surf/locate/index.cfm EPA Watersheds ::http://www.epa.gov/owow/watershed/ Oceans and Coastal Protection: Coastal Watersheds ::http://www.epa.gov/owow/oceans/factsheets/ Office of Wetlands, Oceans, and Watersheds ::http://www.epa.gov/OWOW/ Wetlands Interpreting Carnivore Scent-Station Surveys ::http://www.npwrc.usgs.gov/resource/mammals/scent/index.htm NRCS State of the Land ::http://www.nrcs.usda.gov/technical/land/ National Wetlands Inventory ::http://www.nwi.fws.gov/ Office of Wetlands, Oceans, and Watersheds ::http://www.epa.gov/OWOW/ U.S. Fish and Wildlife Service Wetlands Digital Data ::http://wetlandsfws.er.usgs.gov/NWI/index.html USGS National Wetlands Research Center Publications Menu ::http://www.nwrc.usgs.gov/pblctns.htm Wetlands of the United States: Their Extent and Their Value To Waterfowl and Other Wildlife ::http://www.npwrc.usgs.gov/resource/wetlands/uswetlan/index.htm Wilderness areas The Wilderness Society ::http://www.wilderness.org/ Wildfires GeoMAC (Geospatial Multi-Agency Coordination) - Wildfire Support ::http://geomac.usgs.gov/ National Interagency Coordination Center (NICC) ::http://www.nifc.gov/nicc/ National Interagency Fire Center (NIFC) ::http://www.nifc.gov/ Wildlife management Interpreting Carnivore Scent-Station Surveys ::http://www.npwrc.usgs.gov/resource/mammals/scent/index.htm Organization of Fish and Wildlife Information Managers ::http://fwie.fw.vt.edu/ofwim/ Wetlands of the United States: Their Extent and Their Value To Waterfowl and Other Wildlife ::http://www.npwrc.usgs.gov/resource/wetlands/uswetlan/index.htm Winds Wind Energy Resource Atlas of the United States ::http://rredc.nrel.gov/wind/pubs/atlas/ Wind Powering America: State Wind Resource Maps ::http://www.eere.energy.gov/windandhydro/windpoweringamerica/wind_maps.asp Zip code Community Information by Zip Code ::http://library.csun.edu/mfinley/zipstats.html JCSM county to Zip Code Input 1 page (Area Code) ::http://www.jcsm.com/county1.asp National Address Server ::http://www.cedar.buffalo.edu/adserv.html U.S. Census Bureau ZIP Code® Tabulation Areas (ZCTAs) ::http://www.census.gov/geo/ZCTA/zcta.html USPS - Address Quality ::http://www.usps.gov/ncsc/ USPS - Frequently Asked Questions about ZIP Code Lookup and Address Information ::http://www.usps.com/ncsc/faq/ USPS - ZIP Code Frequently Asked Questions ::http://www.usps.com/ncsc/ziplookup/zipcodefaqs.htm USPS - ZIP Code Lookup ::http://zip4.usps.com/zip4/welcome.jsp USPS - ZIP Code Lookup and Address Information ::http://www.usps.com/ncsc/ziplookup/lookupmenu.htm ZIPskinny - Enter your ZIP code to see U.S. Census data and comparisons with neighboring ZIPs ::http://www.zipskinny.com/ Zip Codes are Not Areas ::http://exchange.manifold.net/manifold/manuals/5_userman/mfd50Zip_Codes_are_Not_Areas.htm zipdecode ::http://acg.media.mit.edu/people/fry/zipdecode/ United States Virgin Islands Aerial photographs NOS Aerial Photography - United States Virgin Islands ::http://www8.nos.noaa.gov/biogeo_public/aerial/search.aspx Upper Mississippi River Sediments (Geology) USGS Upper Mississippi Basin Loading Database (Sediment and Nutrients) ::http://www.umesc.usgs.gov/data_library/sediment_nutrients/sediment_nutrient_page.html Watersheds USGS Upper Mississippi Basin Loading Database (Sediment and Nutrients) ::http://www.umesc.usgs.gov/data_library/sediment_nutrients/sediment_nutrient_page.html Alexandria Digital Library: Americas
Last modified on 2010-03-12
Chesapeake Bay Bolide: Modern Consequences of an Ancient Cataclysm::http://woodshole.er.usgs.gov/epubs/bolide/