Geospatial Data and Tools
USGS maintains its core strengths in characterizing and understanding complex Earth and biological systems through research; modeling; highly accurate topographic, geologic, hydrographic, and biogeographic maps; and delivery of high-quality earth observation data. Programs include cooperative data collection systems, cross-boundary synthesis, and scientific data delivery for users worldwide.
The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) sensor system contributes to a wide array of global change-related application areas including vegetation and ecosystem dynamics, hazard monitoring, geology and soils, hydrology, and land cover change.
Famine Early Warning Systems Network
The USGS FEWS NET Data Portal provides access to geo-spatial data, satellite image products, and derived data products in support of FEWS NET drought monitoring efforts throughout the world.