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1:25,000
- Probably the greatest map series ever created is the 1:25,000 topographic map of the Soviet Union, with about 300,000 sheets, completed in 1987.
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In most European countries, the largest scale topographic map series is a 1:25.000 scale series. Notable exceptions are Austria (1:50,000) and Finland (1:20,000). Many non-European states limit the largest scale of their map series, usually to 1:50,000 scale, frequently due to the large size of the country covered (and hence for financial reasons).
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 amount of detail shown on a map is proportionate to the scale of the map: the larger the map scale, the more detail shown. Since 1 inch on the map represents 2,000 feet on the Earth, 1:24,000-scale maps depict considerable detail.
The online application is called topoBuilder and the output maps are known as OnDemand Topos. The goal of The National Map’s Historical Topographic Map Collection (HTMC) is to provide a digital repository of USGS 1:250,000 scale and larger maps printed between 1884 and 2006.
Aug 18, 2022 · Almost all of the area of the United States has been represented on topographic maps at various scales. For many years there were two standard map scales: Maps, called fifteen-minute quadrangle maps, that spanned 15' of longitude and 15' of latitude at a scale of 1:62,500, which is exactly one inch to the mile.
Nov 30, 2023 · The most popular and the most detailed are the 7.5-minute or 1:24,000-scale (1 inch = 2,000 feet) quadrangle series. Depending on latitude, the area portrayed by the 7.5-minute series ranges from 49 to 64 square miles. It takes about 57,000 7.5-minute maps to cover the 48 contiguous states. Next are the 15-minute or 1:62,500-scale.
In modern mapping, a topographic map or topographic sheet is a type of map characterized by large-scale detail and quantitative representation of relief features, usually using contour lines (connecting points of equal elevation), but historically using a variety of methods.
