GIS — Geographic Information Systems

Natural Earth is a public domain map dataset available at 1:10 million, 1:50 million, and 1:110 million scales. Featuring tightly integrated vector and raster data, with Natural Earth you can make a variety of visually pleasing, well-crafted maps with cartography or GIS software.

OpenStreetMap creates and distributes free geographic data for the world.

he National Map (TNM) is a collaborative effort among the USGS and governmental, academic, non-profit, and industry partners to improve and deliver topographic information for the Nation.

Learn about how to find and use census data for your geography projects.

StreamStats provides access to spatial analytical tools that are useful for water-resources planning and management, and for engineering and design purposes. The map-based user interface can be used to delineate drainage areas, get basin characteristics and estimates of flow statistics, and more. Available information varies from state to state.

The purpose of this Data Catalog is to provide the public with access to the digital geographic data produced by the State of Maine. Users may use this site to download geographic data and the associated metadata.

The Digital Atlas is a teaching tool available to all members of the University of Southern Maine community. It is built on data from MEGIS and others. N.B: The digital atlas is installed on the C:\ drive of all student computers running the Windows operating system.

Links to data for the Digital Atlas of Maine and other sites in Maine.