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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.
The locations of National Register properties and districts with latitude and longitude data may be seen in an online map by clicking on "Map of all coordinates". [ a ] The names on the lists are as they were entered into the National Register; some place names are uncommon or have changed since being added to the National Register.
including Topographic Map Series in different map scales France: Institut national de l'information géographique et forestière (IGN) National Institute of Geographic and Forest Information (IGN) ign.fr: Géoportail: Germany: Bundesamt für Kartographie und Geodäsie (BKG) Federal Agency for Cartography and Geodesy: bkg.bund.de: Geoportal.de
Topographic maps are also commonly called contour maps or topo maps. In the United States, where the primary national series is organized by a strict 7.5-minute grid, they are often called or quads or quadrangles. Topographic maps conventionally show topography, or land contours, by means of contour lines.
A historic map by the United States Coast and Geodetic Survey that has been georeferenced by the Regional Plan Association for mapping historic wetlands in OpenHistoricalMap. OpenHistoricalMap allows anyone with a free account to contribute directly to the map through an editor such as the iD Web application or the JOSM desktop application.
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.