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2. Topographic map - Wikipedia

   en.wikipedia.org/wiki/Topographic_map

   In modern mapping, a topographic map or topographic sheet is a type of map characterized by large- scale detail and quantitative representation of relief features, usually using contour lines (connecting points of equal elevation), but historically using a variety of methods. Traditional definitions require a topographic map to show both ...

3. TopoQuest - Wikipedia

   en.wikipedia.org/wiki/TopoQuest

   The viewer was made seamless by incorporating GDAL. In addition to matching the Topozone URL 's, the website offers free download of GeoTIFFs , which Topozone had only offered for a premium. TopoQuest started adding Canadian 1:50K scale topographic maps in July 2008, and USGS 1:100K and 1:250K scale topographic maps in March 2009.

4. The National Map - Wikipedia

   en.wikipedia.org/wiki/The_National_Map

   The National Map is a collaborative effort of the United States Geological Survey (USGS) and other federal, state, and local agencies to improve and deliver topographic information for the United States. [1] The purpose of the effort is to provide "...a seamless, continuously maintained set of public domain geographic base information that will ...

5. Geographic Names Information System - Wikipedia

   en.wikipedia.org/wiki/Geographic_Names...

   The logo of the United States Geological Survey (USGS) The Geographic Names Information System (GNIS) is a database of name and location information about more than two million physical and cultural features throughout the United States and its territories; the associated states of the Marshall Islands, Federated States of Micronesia, and Palau; and Antarctica.

6. U.S. National Geodetic Survey - Wikipedia

   en.wikipedia.org/wiki/U.S._National_Geodetic_Survey

   The National Geodetic Survey (NGS) is a United States federal agency based in Washington, D.C. that defines and manages a national coordinate system, providing the foundation for transportation and communication, mapping and charting, and a large number of science and engineering applications. Since its founding in 1970, it has been part of the ...

7. List of national parks of the United States by elevation

   en.wikipedia.org/wiki/List_of_national_parks_of...

   Skyline Drive map and profile – Skyline Drive runs the length of Shenandoah. PCT Elevation Profiles – The Pacific Crest Trail goes through seven national parks. North Cascades – Washington section K. Mount Rainier – Washington section I. Crater Lake – Oregon section C. Lassen Volcanic – California section N. Yosemite – California ...

8. List of GIS data sources - Wikipedia

   en.wikipedia.org/wiki/List_of_GIS_data_sources

   Online collection of all digital USGS 1:24K scale topographic maps (as well as various other GIS data) covering the United States, available as a free download. NPScape United States Department of the Interior National Park Service NPScape is a landscape dynamics monitoring project that provides landscape-level data, tools, and evaluations for ...

9. United States Geological Survey - Wikipedia

   en.wikipedia.org/wiki/United_States_Geological...

   Website. www.usgs.gov. The United States Geological Survey (USGS), founded as the Geological Survey, is an agency of the U.S. Department of the Interior whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on March 3, 1879, to study the landscape of the United States, its natural resources, and ...