United States Geological Survey

The United States Geological Survey (USGS) is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it.

United States Geological Survey, Universal Transverse Mercator, Universal Transverse Mercator Grid System,
Vertical Aerial Photograph,
Weather Map, ...

United States Geological Survey Digital Elevation Model data format. These data can be viewed in a variety of GIS software applications. Additional information about the USGS DEM format can be found from usgs.gov.

United States Geological Survey.
Vadose Zone
The upper most zone within the ground that contains a fluctuating amount of moisture.

United States Geological Survey
USGS-MP
United States Geological Survey, Menlo Park ...

USGS United States Geological Survey
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Water Supply Well A service well used to provide water for drilling operations and enhanced recovery projects.

USGS- United States Geological Survey. The USGS is an organization geared toward providing reliable scientific information to describe and understand the Earth; minimize loss of life and property from natural disasters; manage water, biological, ...

Map Scales, United States Geological Survey
Universal Transverse Mercator Grid Fact Sheet, United States Geological Survey
Universal Transverse Mercator Zone Locations and Central Meridians, United States Geological Survey ...

" DEM Digital elevation model, a data exchange format developed by the United States Geological Survey for geographical and topographical data. DEMTS Digital and Electronic Maps Transfer Standard. Interchange of digital maps.

Since its foundation in 1879, the United States Geological Survey has been a leader in developing map data for the USA. Much of the map data developed by the USGS has been converted to digital formats that can be imported into GIS software.

More improvements have been incorporated in the creation of 3-D USGS (United States Geological Survey) compatible DEM data from vectorized contour data.

The USGS DEM standard is a geospatial file format developed by the United States Geological Survey for storing a raster-based digital elevation model. It is an open standard, and is used throughout the world.

The United States is nicely covered by three series of DEMs, at three different scales, by maps from the United States Geological Survey.

This research was sponsored by the United States Geological Survey under a Joint Research Interchange between Hunter College and the NASA-Ames Research Center (JRI NCC2-5091). Support is gratefully acknowledged.

* Limitations apply
** United States Geological Survey - the supplier of base and thematic maps covering the United States of America.
The following maps show Canada projected in different ways: ...

Snyder, John P. Map Projections Used by the United States Geological Survey-2nd edition. U.S.G.S. Bulletin No. 1532. Washington D.C.: U.S. Government Printing Office, 1983.

DLG stands for digital line graph, a form of digital map developed by the United States Geological Survey. DLGs supply users with the digital version of information printed on USGS topographical quadrangle maps.

The United States Geological Survey (USGS) DEM is a specific data product that adheres to standards defined by the National Spatial Data Infrastructure (NSDI). USGS DEMs can be downloaded for use with ArcGIS 3D Analyst.

A polyconic projection is created by projecting different portions of the earth's surface onto portions of different cones each with its own standard lines. The United States Geological Survey frequently uses polyconic projections for its maps.

derived from field survey or extracted from existing site records such as those held within national and regional monument records
aerial photographs and remotely sensed images
digital data products, such as the United States Geological Survey ...

See also: Survey, Information, Map, Mapping, Digital