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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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Map showing aeromagnetic interpretation of the Baker-Cypress BLM Instant Study Area and Timbered Crater Forest Service Further Planning Areas, Modoc, Shasta, and Siskiyou counties, California

The data for the aeromagnetic map of the Baker-Cypress and Timbered crater areas were collected in 1978 and compiled at a scale of 1 :62,500 (U,S, Geological Survey, 1979). East-west traverses were spaced at 0.8-km intervals at a constant altitude of 1370 m (4500 ft) above sea level, Contour interval is 20 and 100 gammas, depending upon the steepness of local gradients in the Earth's magnetic fiel

Map showing general chemical quality of ground water in the Alton-Kolob coal-fields area, Utah

This is one of a series of maps that describes the geology and related natural resources of the Alton-Kolob coal-fields area, Utah. The purpose of this map is to show regional variations in ground-water quality as depicted by its dissolved-solids concentration. The map is based on chemical analyses of water samples from springs, streams during base flow, and wells less than 1.000 feet deep. There

Map showing general chemical quality of ground water in the Richfield Quadrangle, Utah

This is one of a series of maps that describe the geology and related natural resources of the Richfield 2° Quadrangle, Utah. The purpose of this map is to show the general chemical quality of ground water by ranges of dissolved-solids concentrations. The water quality varies considerably with depth in some areas; thus, the actual concentrations of dissolved solids of water in some aquifers locall

Map showing geothermal resources of the Lake City-Surprise Valley Known Geothermal Resource Area, Modoc County, California

This report summarizes geothermal data from published and unpublished geophysical, geochemical, and geologic reports on Surprise Valley that have been prepared during the past 26 years.  Particular emphasis is placed on a comprehensive structural interpretation of the west half of the valley that is based on map compilation of concealed faults that have been inferred from geophysical methods and e