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The Libre Map Project is an 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. History [ edit ]
The USGS also utilizes data from The National Map Corps, which consists of volunteers who devote some of their time to provide cartographic information on structures. [4] The National Map is the official replacement for the USGS topographic map program. [5]
USGS Maps. Every USGS topographic map available for free download from the Internet Archive. OpenStreetMap - CC-BY-SA 2.0 vector map data collected by GPS; The Map Library - Maps for Central America and Africa. Tag with commons:Template:PD-MapLibrary (talk, backlinks, edit) GinkgoMaps - Free Digital Maps published under the CC-by Licence
The Archive includes each U.S. state and territory, in all scales, editions and various printings. With coverage dating from the 1880s when the USGS began publishing standard topographic quadrangles, the Archive is the most complete collection of USGS topographic maps.
The United States remains virtually the only developed country in the world without a standardized civilian topographic map series in the standard 1:25,000 or 1:50,000 metric scales, making coordination difficult in border regions (the U.S. military does issue 1:50,000 scale topo maps of the continental United States, though only for use by ...
Recent USGS digital National Map omits several important geographic details that were featured in the original USGS topographic map series (1945–1992). [62] Examples of omitted details and features include power transmission lines, telephone lines, railroads, recreational trails, pipelines, survey marks, and buildings. [ 62 ]
The maps are produced by the USGS, which encourages the distribution of their maps through business partners. TopoZone offered aerial photographs from the USGS and street maps from the United States Census Bureau. In 2007 complete coverage of Canada was added, using the topographic map series produced by Natural Resources Canada.
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.