GIS Data

USGS is a primary source of geographic information system (GIS) data. Our data and information is presented in spatial and geographic formats, including The National Map, Earth Explorer, GloVIS, LandsatLook, and much more. Explore GIS Data Maps.

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April 9, 2015

Map showing flow field changes Map showing flow field changes

This map shows recent changes to Kīlauea’s active East Rift Zone lava flow field.

Volcano Hazards Program, Hawaiian Volcano Observatory, Kīlauea

April 6, 2015

Using satellite images to monitor glacial-lake outburst floods: Lago Cachet Dos drainage, Chile Using satellite images to monitor glacial-lake outburst floods: Lago Cachet Dos drainage, Chile

The U.S. Geological Survey (USGS) is monitoring and analyzing glacial-lake outburst floods (GLOFs) in the Colonia valley in the Patagonia region of southern Chile. A GLOF is a type of flood that occurs when water impounded by a glacier or a glacial moraine is released catastrophically. In the Colonia valley, GLOFs originating from Lago Cachet Dos, which is dammed by the Colonia Glacier...

April 3, 2015

Map show flow field with thermal overlays Map show flow field with thermal overlays

This map overlays georegistered mosaics of thermal images collected during a helicopter overflight of the three areas of breakouts near Pu‘u ‘Ō‘ō on April 3.

Volcano Hazards Program, Hawaiian Volcano Observatory, Kīlauea

April 3, 2015