Online Data Sources Finger Lakes Geospatial Explorer Viewable and Downloadable Data GIS Data Viewers     Finger Lakes Geospatial Explorer (beta version) click here (user-created login required)   Viewable and Downloadable Data NYS GIS Data Clearinghouse http://www.nysgis.state.ny.us/ Cornell University Geospatial Information Repository http://cugir.mannlib.cornell.edu/ GIT Ahead Project Finger Lakes Data http://fli.hws.edu/gitahead/data/data.html GIS Data Depot http://data.geocomm.com/catalog/ USDA Geospatial Data Gateway http://datagateway.nrcs.usda.gov/ Terraserver http://terraserver-usa.com National Atlas --USGS http://www.nationalatlas.gov/natlas/Natlasstart.asp (data viewer) http://www.nationalatlas.gov/atlasftp.html (raw data for use in GIS) USGS GIS Data Map Studio http://gisdata.usgs.net/ Geode--USGS http://geode.usgs.gov/ Seamless Data Distribution (US and International)--USGS http://seamless.usgs.gov USGS Digital Topographic Maps ftp://www.pasda.psu.edu/pub/pasda/other_states/ny/drg24k These are ready to drop into your ArcMap project. National Wetlands Inventory - Wetlands Mapper http://wetlandsfws.er.usgs.gov/NWI/index.html Soil DataMart http://soildatamart.nrcs.usda.gov/State.aspx Census 2000 Data for the US http://arcdata.esri.com/data/tiger2000/tiger_download.cfm Conservation Geoportal http://www.conservationmaps.org/index.jsp Geography Network http://www.geographynetwork.com/(static maps, interactive maps, and downloadable data) United Nations Environment Programme GEO Data Portal http://geodata.grid.unep.ch/ NatureServe: Plant, Animal, and Ecological Data http://www.natureserve.org/getData/index.jsp   GIS Data Viewers Enviromapper -- EPA Data http://www.epa.gov/enviro/html/em/index.html Acme Mapper http://mapper.acme.com/ National Geographic Map Machine http://plasma.nationalgeographic.com/mapmachine/index.html Department of Environmental Conservation Environmental Navigator http://www.dec.ny.gov/imsmaps/navigator/ NASA WorldWind (2D and 3D imagery) http://worldwind.arc.nasa.gov/ Google Earth (2D and 3D imagery) http://earth.google.com/ Geospatial One-Stop http://geodata.gov National Hydrography Dataset http://nhd.usgs.gov/ (some limited data extraction such as subbasin boundaries) NCSS Web Soil Survey http://websoilsurvey.nrcs.usda.gov/app/