GIS Data and Software

Local

• Yale University GIS - Visit this site first and often!
• Yale Digital Map Collection - May need to install LizardTech plugin
• Connecticut GIS Data - CT DEEP
• Connecticut Data - MAGIC: Map And Geographic Information Center at UCONN
• CT ECO - Connecticut Environmental Conditions Online
• CLEAR at UConn - Connecticut aerial photo mosaics - online
• CTGIS-L List - Connecticut GIS Listserve
• Maine Office of GIS
• Massachusetts GIS Data - MassGIS
• Rhode Island GIS Data - MassGIS
• New York GIS Data - NY GIS Clearing House
• Vermont Center for Geographic Information - VCGI

Federal

• The National Map - Government source of national GIS data
• DATA.GOV - U.S. Government open data
• USGS Data Products
• USDA Natural Resources Data - Another really good source af a lot of US data
• U.S. Bureau of Transportation Statistics - Like it says, statistical data
• Geographic Names Information System - (GNIS)
• National Historic GIS - Create your own mashups from US Census data

Global Data

• Natural Earth - Very nice collection of global data
• Protected Planet - International protected areas and parks
• GRUMP - Global Rural-Urban Mapping Project - includes urban extents data
• HydroSHEDS - Global hydrology data from the WWF and USGS
• International Water Management Inst. - Selected river basin data and imagery in Asia, Africa, and Middle East
• Hydrology from Space - LEGOS Lake levels from satellite altimetry
• Best of the Web - GIS - Useful Internet links to GIS resources
• Free GIS, RS, and Hydrology Data - Blog with many useful links to data
• ArcGIS Imagery Showcase - Identify image sources and dates for ESRI image basemap layer

Software

• ESRI - Maker of ArcGIS
• ArcGIS Resources - Loads of useful information for working with ArcGIS
• Q-GIS - The Quatum GIS project is an open source (free) GIS software
• GRASS GIS - The world’s leading Free GIS software
• DIVA GIS - A free GIS program for the analysis of biodiversity data
• TatukGIS - Free GIS viewer and free coordinate conversion calculator. Also a GIS editor, SDK, and internet server
• DNRGPS - Transfer data between Garmin GPS and GIS software by the Minnesota Dept. of Natural Resources