GIS Basics - What is a GIS and how can it help you?
GeoPlace.com - geospatial news, publications, and more
GIS dictionary - includes definitons for terms which either relate directly to GIS or which users may come across in the course of their work
Data Sources
Environmental
Protection Agency - a national reference for GIS data, including a
list of state geographic data depositories
USGS Real-Time Hydrologic Data - has river flow information for the entire United States
Bureau of Transportation Services - a national resource for transportation spatial data and GIS in transportaion (GIS-T) information
Federal Geographic Data Committee (FGDC) - coordinates the development of the National Spatial Data Infrastructure (NSDI) which encompasses policies, standards, and procedures for sharing geographic data
GIS Data Depot - provides free GIS data downloads and creates custom GIS data CD-ROMs for CAD, mapping, and location based applications
ArcData Online - ESRI's Internet mapping and data site; can create map images and download data
USGS National Mapping Information - mapping news, products, and services
USGS Geographic Data - data sets available to download
GIS Resources Over the Internet - good source for various types of data
Government Publications and Maps - state geospatial data and maps
Natural Resources Conservation Service - NRCS GIS and data sites
GIS
Data and Maps - contains many good links to data sources
TerraServer - overhead imagery that can be viewed and purchased
Pennsylvania Links
Pennsylvania Spatial
Data Access (PASDA) - Pennsylvania's official geospatial information
clearinghouse
Pennsylvania State Data Center (PaSDC) - the Commonwealth's official source of demographic and economic data
Pennsylvania Magic - organization devoted to the furtherance of GIS in Pennsylvania
Pennsylvania Geospatial Information Council (PAGIC) - organization that facilitates the sharing of common geospatial data
GIS software grant program - grant program sponsored by the PA Department of Environmental Protection
EPA Office of Water - download basins/rivers data
Software & Equipment
ESRI
- GIS and mapping software - arcview data and tutorials
Trimble - GPS equipment and tutorials
Comments or suggestions for GIS links? Please email Emily O'Rourke