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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.
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.
The U.S. Geological Survey is celebrating the 125th anniversary of its national program for topographic mapping (1884–2009). Topographic maps became a signature product of the USGS because the public found them—then and now—to be a versatile tool for viewing our Nation's vast landscape.
Sep 29, 2022 · The Topographic Change working group is defining the concepts, practical tools, and design for a national scale mapping and monitoring system that will enable an ongoing nationwide assessment of multi-scale 3D changes in the Earth’s surface, both natural and anthropogenic in origin, and demonstrating its functional capabilities for the ...
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 .
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.
Jan 7, 2022 · The National Topographic System is a standardized method of mapping. Natural Resources Canada uses the system to produce maps that depict the country’s natural and man-made features (e.g. lakes, rivers, railways and roads). Instituted in 1927, today the NTS uses two scales: 1:50,000 and 1:250,000.
