What is a topographic map?
The distinctive characteristic of a topographic map is the use of elevation contour lines to show the shape of the Earth's surface. Elevation contours are imaginary lines connecting points having the same elevation on the surface of the land above or below a reference surface, which is usually mean sea level. Contours make it possible to show the height and shape of mountains, the depths of the ocean bottom, and the steepness of slopes.
USGS topographic maps also show many other kinds of geographic features including roads, railroads, rivers, streams, lakes, boundaries, place or feature names, mountains, and much more. Older maps (published before 2006) show additional features such as trails, buildings, towns, mountain elevations, and survey control points. Those will be added to more current maps over time.
The phrase "USGS topographic map" can refer to maps with a wide range of scales. Each topographic map has a unique name.
The USGS offers 3 categories of topographic maps:
OnDemand Topos enable users to request customized USGS-style topographic maps. These maps utilize the best available data from The National Map. Exclusive to the topoBuilder application is the ability to select from multiple map scales and center maps wherever users choose.
US Topo maps are the current 1:24,000 scale* topographic map series, published as digital documents (that can also be printed) from 2009 to the present.
The Historical Topographic Map Collection is scanned images of maps originally published (at all scales) as paper documents in the period 1884-2006.
The USGS also publishes other kinds of maps, including some topographic maps that are not standard quadrangle maps.
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Related
How current are US Topo maps? How current are US Topo maps?
US Topo maps are updated on a three-year production cycle (maps covering one third of the country are updated each year). The US Topo production schedule follows the U.S. Department of Agriculture's National Agricultural Imagery Program (NAIP) collection schedule. This does not include US Topos for Alaska, which are on a different schedule. The linework features shown on the maps are generated...
Will US Topo maps become part of the Historical Topographic Map Collection when a newer version is published? Will US Topo maps become part of the Historical Topographic Map Collection when a newer version is published?
Superseded US Topo maps will remain available for download, but will not become part of the Historical Topographic Map Collection, which is scans of USGS topographic quadrangles originally published as paper documents between 1884-2006. The first US Topo maps were published in 2009. They are updated and superseded every 3 years (maps for one third of the country are produced every year). This does...
Do you offer teacher discounts for your maps and other cost products? Do you offer teacher discounts for your maps and other cost products?
Yes. Educational institutions qualify for discounts on purchases made through the online USGS Store. To receive any discounts you must first be set up in their system. Please fax your request on school letterhead (or on a purchase order) to 303-202-4693 and include your Federal Tax ID number ( not to be confused with your Federal Tax Exempt Number). For questions, call 1-888-MAP-DEAL (1-888-627...
Related
How current are US Topo maps? How current are US Topo maps?
US Topo maps are updated on a three-year production cycle (maps covering one third of the country are updated each year). The US Topo production schedule follows the U.S. Department of Agriculture's National Agricultural Imagery Program (NAIP) collection schedule. This does not include US Topos for Alaska, which are on a different schedule. The linework features shown on the maps are generated...
Will US Topo maps become part of the Historical Topographic Map Collection when a newer version is published? Will US Topo maps become part of the Historical Topographic Map Collection when a newer version is published?
Superseded US Topo maps will remain available for download, but will not become part of the Historical Topographic Map Collection, which is scans of USGS topographic quadrangles originally published as paper documents between 1884-2006. The first US Topo maps were published in 2009. They are updated and superseded every 3 years (maps for one third of the country are produced every year). This does...
Do you offer teacher discounts for your maps and other cost products? Do you offer teacher discounts for your maps and other cost products?
Yes. Educational institutions qualify for discounts on purchases made through the online USGS Store. To receive any discounts you must first be set up in their system. Please fax your request on school letterhead (or on a purchase order) to 303-202-4693 and include your Federal Tax ID number ( not to be confused with your Federal Tax Exempt Number). For questions, call 1-888-MAP-DEAL (1-888-627...