Dr. Mary T. Dooley Map Library: GeoData Resources

Esri provides a full spectrum of ready-to-use, high-quality geospatial data for your GIS visualization and analysis projects. Whether licensed from renowned, industry-leading providers or built with Esri's proven methodologies, we strive to deliver the most accurate and current data available.

This website provides access to several EPA databases to provide you with information about environmental activities that may affect air, water, and land anywhere in the United States.

Includes aerial photographs from 1937 onward and satellite images. Links to EarthExplorer and Glovis to download shapefiles.

Federal agencies and their partners collect and manage large amounts of geospatial data - but these data are often not easily found when needed or accessible in useful forms. The Geospatial Platform provides ready access to federally maintained geospatial data, services and applications. The content of all datasets and services demarcated with the Data.gov globe have been verified by the Agency to be consistent with Federal privacy, national security, and information quality policies. As an additional service to our users, we also provide access to data from our partners across State, Tribal, Regional and local governments as well as non-governmental organizations.

The National Elevation Dataset (NED) is the primary elevation data product of the USGS. The NED is a seamless dataset with the best available raster elevation data of the conterminous United States, Alaska, Hawaii, and territorial islands.

The Mission of NOAA's National Geodetic Survey (NGS) is "to define, maintain and provide access to the National Spatial Reference System to meet our nation's economic, social, and environmental needs."

Natural Earth is a public domain map dataset available at 1:10m, 1:50m, 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.

The National Water Information System provides access to water-related data at over 1.5 million sites in the United States and its territories.

The Minnesota Well Index provides information about wells and borings in Minnesota. It provides basic information, such as location, depth, geology, construction and static water level, for many wells and borings drilled in Minnesota.

The Census Bureau offers several file types and an application for mapping census geographic data based on data found in their MAF/TIGER database.

Proprietary software by ESRI that includes hundreds of tools for performing spatial analysis

Proprietary software that incorporates geospatial image processing and analysis, remote sensing and GIS capabilities into a powerful, convenient package

GeoServer is an open source software server written in Java that allows users to share and edit geospatial data.

Geographic Resources Analysis Support System, commonly referred to as GRASS GIS, is a Geographic Information System (GIS) used for data management, image processing, graphics production, spatial modelling, and visualization of many types of data.