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The National Topographic System or NTS is the system used by Natural Resources Canada for providing general purpose topographic maps of the country. NTS maps are available in a variety of scales, the standard being 1:50,000 and 1:250,000 scales. [1] The maps provide details on landforms and terrain, lakes and rivers, forested areas ...
US Topo map data is derived from the geographic information system (GIS) data of The National Map and is continuously updated via National, state, local, and commercial partnerships. Current and historic USGS topographic maps are available for immediate download from The National Map Downloader.
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What is the difference between a USGS map and a topo map?
The National Map is easily accessible for display on the Web through such products as topographic maps and services and as downloadable data. The geographic information available from The National Map includes boundaries, elevation, geographic names, hydrography, land cover, orthoimagery, structures, and transportation.
One of the main differences is that the historical USGS 7.5-minute topographic map series (produced 1945-1992) included feature classes that are not yet shown on US Topo maps (though more are added each year). Examples include recreational trails, pipelines, power lines, survey markers, many types of boundaries, and many types of buildings.
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.
Interactive database for topographic maps of the United States. The U.S. Geological Survey hosts topoView, an interactive database of the survey’s topographic maps. The map is searchable by address, and clicking on any point on the map brings up topographic maps of the area dating back to 1879. Map results can be narrowed further using scale ...
The U.S. Geological Survey (USGS) has been the primary civilian mapping agency of the United States since 1879. Some of the most well-known USGS maps are the 1:24,000-scale topographic maps, also called 7.5-minute quadrangles . In 2009, the USGS transitioned from our hand scribed historical topographic maps to US Topos , which are computer ...
