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  2. National Topographic System - Wikipedia

    en.wikipedia.org/wiki/National_Topographic_System

    Topographic mapping in Canada was originally undertaken by many different agencies, with the Canadian Army’s Intelligence Branch forming a survey division to create a more standardized mapping system in 1904. The indexing system used today was established in 1923, and the map catalogue officially became the National Topographic System in 1926 ...

  3. TopoZone - Wikipedia

    en.wikipedia.org/wiki/TopoZone

    The 2003 press release of the partnership said that 300 million maps had been served from 1999 to 2003. [2] TopoZone was one of the first topographic mapping site on the web, providing visitors with free viewing and printing of the full set of United States Geological Survey topographic maps covering the entire United States.

  4. Map series - Wikipedia

    en.wikipedia.org/wiki/Map_series

    Mairie de Loevenich (), from the Topographic Survey of the Rhineland by Tranchot/Müffling, sheet 57 (published 1806/07).. A map series is a group of topographic or thematic charts or maps usually having the same scale and cartographic specifications, and with each sheet appropriately identified by its publisher as belonging to the same series.

  5. Geography of Ontario - Wikipedia

    en.wikipedia.org/wiki/Geography_of_Ontario

    Ontario is known for the large number of lakes and rivers it contains. About one-fifth of the world's fresh water can be found in Ontario. [17] Ontario is also known for being the only province in Canada that touches the Great Lakes. Ontario touches four of the Great Lakes: Huron, Lake Ontario (the province is named after the lake), Erie and ...

  6. National mapping agency - Wikipedia

    en.wikipedia.org/wiki/National_mapping_agency

    The Centre for Topographic Information produces topographic maps of Canada at scales of 1:50,000 and 1:250,000. The full map catalogue is known as the National Topographic System (NTS). [ 16 ] A government proposal to discontinue publishing of all hardcopy or paper topographic maps in favor of digital-only mapping data was shelved in 2005 after ...

  7. List of online map services - Wikipedia

    en.wikipedia.org/wiki/List_of_online_map_services

    T Map by SK Telecom; One Navi by KT corporation; Spain. Spanish official cartography website, including National Topographic Maps MTN50 (1:50,000 scale) and MTN25 (1:25,000 scale). SITPA-IDEAS, Asturias regional maps. Sweden. Eniro.se, also covers Denmark, Finland and Norway; Hitta.se; Thailand "Longdo Map", by Longdo.

  8. Contour line - Wikipedia

    en.wikipedia.org/wiki/Contour_line

    A contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes. [4] The contour interval of a contour map is the difference in elevation between successive contour lines. [5] The gradient of the function is always perpendicular to the contour ...

  9. Wikipedia : WikiProject Maps/Conventions/Topographic maps

    en.wikipedia.org/.../Conventions/Topographic_maps

    Be also conscient that a topographic maps is first a background, which then will be complete by other layers. Most of time, these upper layers are transport ways (see exchanges maps), Kingdoms' areas or troops and moves (see areas maps & historical maps), or even officials borders from location maps. Tutorials. Wikipedia:Graphic Lab/Resources ...

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