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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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Faults and their potential hazards in Santa Cruz County, California Faults and their potential hazards in Santa Cruz County, California

This report and map area designed to provide Santa Cruz County with basic data on the location, pattern, recency of movement, potential for future surface rupture, and anticipated earthquake magnitudes and recurrence intervals for several of the faults located there for consideration in the county's land-use planning program and the preparation of its seismic safety element. This report...

Fence diagram showing lithologic facies of the Sadlerochit Formation (Permian and Lower Triassic), northeastern Alaska Fence diagram showing lithologic facies of the Sadlerochit Formation (Permian and Lower Triassic), northeastern Alaska

A fence diagram of the Sadlerochit Formation, the major reservoir rock in the Prudhoe Bay oil field, is presented for about 20,000 square miles of northeastern Alaska. Thirty reference points were used in constructing the diagram, 27 are outcrop sections measured in detail between 1969 and 1972, and 4 are well logs of oil wells drilled in recent years.
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