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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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August 6—Thermal map of fissure system and lava flows

This thermal map shows the fissure system and lava flows as of 6 am on Monday, August 6. 

August 3—Thermal map of fissure system and lava flows

This thermal map shows the fissure system and lava flows as of 12:30 pm on Friday, August 3.

Geologic map of the Hayfield quadrangle, Frederick County, Virginia

The Hayfield 7.5-minute quadrangle is located within the Valley and Ridge physiographic province of northern Virginia. The quadrangle includes the topographical lowland area of the northern Great Valley to the southeast, the narrow ridge of Little North Mountain along the western edge of the Great Valley, and the broad region of elongated valleys and ridges west of Little North Mountain. The most

July 31—Thermal map of fissure system and lava flows

This thermal map shows the fissure system and lava flows as of 6 am on Tuesday, July 31

July 29—Thermal map of fissure system and lava flows

This thermal map shows the fissure system and lava flows as of 6 am on Sunday, July 29