National Geospatial Technical Operations Center

Publications

Filter Total Items: 43
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Year Published: 2009

The National Map - Elevation

The National Elevation Dataset (NED) is the primary elevation data product produced and distributed by the USGS. The NED provides seamless raster elevation data of the conterminous United States, Alaska, Hawaii, and the island territories. The NED is derived from diverse source data sets that are processed to a specification with a consistent...

Gesch, Dean; Evans, Gayla; Mauck, James; Hutchinson, John; Carswell, William J.
The National Map - Elevation; 2009; FS; 2009-3053; Gesch, Dean; Evans, Gayla; Mauck, James; Hutchinson, John; Carswell, William J., Jr.

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Year Published: 2009

The National Map - Orthoimagery

Orthorectified digital aerial photographs and satellite images of 1-meter (m) pixel resolution or finer make up the orthoimagery component of The National Map. The process of orthorectification removes feature displacements and scale variations caused by terrain relief and sensor geometry. The result is a combination of the image characteristics...

Mauck, James; Brown, Kim; Carswell, William J.
The National Map - Orthoimagery; 2009; FS; 2009-3055; Mauck, James; Brown, Kim; Carswell, William J., Jr.

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Year Published: 2009

The National Map - Hydrography

The National Hydrography Dataset (NHD) is the surface-water component of The National Map. The NHD is a comprehensive set of digital spatial data that represents the surface water of the United States using common features such as lakes, ponds, streams, rivers, canals, streamgages, and dams. Polygons are used to represent area features such as...

Simley, Jeffrey D.; Carswell, William J.
The National Map - Hydrography; 2009; FS; 2009-3054; Simley, Jeffrey D.; Carswell, William J., Jr.

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Year Published: 2009

The National Geospatial Technical Operations Center

The United States Geological Survey (USGS) National Geospatial Technical Operations Center (NGTOC) provides geospatial technical expertise in support of the National Geospatial Program in its development of The National Map, National Atlas of the United States, and implementation of key components of the National Spatial Data Infrastructure (NSDI).

Craun, Kari J.; Constance, Eric W.; Donnelly, Jay; Newell, Mark R.
The National Geospatial Technical Operations Center; 2009; FS; 2009-3017; Craun, Kari J.; Constance, Eric W.; Donnelly, Jay; Newell, Mark R.

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Year Published: 2009

Hazards, Disasters, and The National Map

Federal, State, and local response and management personnel must have current, reliable, and easily accessible geographic information and maps to prepare for, respond to, or recover from emergency situations. In life-threatening events, such as earthquakes, floods, or wildland fires, geographic information is essential for locating critical...

Carswell, William J.; Newell, Mark R.
Hazards, Disasters, and The National Map; 2009; FS; 2009-3010; Carswell, William J., Jr.; Newell, Mark R.

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Year Published: 2008

The National Map product and services directory

As one of the cornerstones of the U.S. Geological Survey's (USGS) National Geospatial Program (NGP), The National Map is a collaborative effort among the USGS and other Federal, state, and local partners to improve and deliver topographic information for the Nation. It has many uses ranging from recreation to scientific analysis to emergency...

Newell, Mark R.
The National Map product and services directory; 2008; FS; 2008-3065; Newell, Mark R.

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Year Published: 2007

EL68D Wasteway Watershed Land-Cover Generation

Classification of land cover from Landsat Enhanced Thematic Mapper Plus (ETM+) for the EL68D Wasteway Watershed in the State of Washington is documented. The procedures for classification include use of two ETM+ scenes in a simultaneous unsupervised classification process supported by extensive field data collection using Global Positioning System...

Ruhl, Sheila; Usery, E. Lynn; Finn, Michael P.
EL68D Wasteway Watershed Land-Cover Generation; 2007; OFR; 2007-1143; Ruhl, Sheila; Usery, E. Lynn; Finn, Michael P.