Geographic Information Systems (GIS) @ CMU

Reference and thematic maps of census data.

Downloadable boundary files and metadata. No map images.

Land information data and maps downloadable by purchase.

Information about the ESRI product, training, and other info.

Geospatial data sets and metadata for national forest lands.

Biologic, geographic, geologic, and hydrological scientific data downloads.

U.S. government portal for geographic information (including GIS) across agencies and programs.

Geographic Federal Reserve economic data.

Downloadable data for the national parks.

Public domain imagery and land-cover data from a number of federal agencies.

Aerial imagery taken during the agricultural growing seasons in the continental U.S.

Complicated site, but worth exploring for climate, weather, ecosystems, natural hazards and other data.

A gateway for "The National Atlas" and other geospatial endeavors.

Census data and GIS-compatible boundary files for the US between 1790 and 2000. Includes a link to Social Explorer (below).

Digital spatial data for surface water features.

Data for federal lands, land and mineral use records, mining claims, and the public land survey.

View and download US and international data.

Wetlands digital data extracted using USGS topographic quadrangle names.

Interactive data maps of the US with historical data back to 1940.

Maps displaying snow water equivalent, snow depth, and monthly/yearly precipitation.

Downloadable satellite images from 1975 forward.

Includes the Natural Resources Conservation Service, Farm Service Agency, and Rural Development.

Includes the "Soil Data Mart" and other downloadable data.

Through FEMA's flood hazard mapping program, Risk Mapping, Assessment and Planning (MAP), FEMA identifies flood hazards, assesses flood risks and partners with states and communities to provide accurate flood hazard and risk data to guide them to mitigation actions. Flood hazard mapping is an important part of the National Flood Insurance Program (NFIP), as it is the basis of the NFIP regulations and flood insurance requirements. FEMA maintains and updates data through Flood Insurance Rate Maps (FIRMs) and risk assessments. FIRMs include statistical information such as data for river flow, storm tides, hydrologic/hydraulic analyses and rainfall and topographic surveys.