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  2. United States National Grid - Wikipedia

    en.wikipedia.org/wiki/United_States_National_Grid

    The United States National Grid (USNG) is a multi-purpose location system of grid references used in the United States. It provides a nationally consistent "language of location", optimized for local applications, in a compact, user friendly format. It is similar in design to the national grid reference systems used in other countries.

  3. State Plane Coordinate System - Wikipedia

    en.wikipedia.org/wiki/State_Plane_Coordinate_System

    Thus the state plane coordinate system is still useful. Originally, the state plane coordinate systems were based on the North American Datum of 1927 (NAD27). Later, the more accurate North American Datum of 1983 (NAD83) became the standard (a geodetic datum is the way a coordinate system is linked to the physical Earth). More recently there ...

  4. List of principal and guide meridians and base lines of the ...

    en.wikipedia.org/wiki/List_of_principal_and...

    Primarily from the United States Government Printing Office Style Manual. [1] State names usually signify only parts of each listed state, unless otherwise indicated. Based on the BLM manual's 1973 publication date, and the reference to Clarke's Spheroid of 1866 in section 2-82, coordinates appear to be in the NAD27 datum.

  5. Wikipedia:Online maps of the United States - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Online_maps_of...

    Image:Blank US Map with borders.svg, a blank states maps with borders. Image:BlankMap-USA.png, a map with no borders and states separated by transparency. Image:US map - geographic.png, a geographical map. On Wikimedia Commons, a free online media resource: commons:Category:Maps of the United States, the category for all maps with subcategories ...

  6. Module:Location map/data/USA Midwest - Wikipedia

    en.wikipedia.org/wiki/Module:Location_map/data/...

    Name used in the default map caption; image = USA MidwestMap01.png The default map image, without "Image:" or "File:" top = 49.5 Latitude at top edge of map, in decimal degrees; bottom = 36.15 Latitude at bottom edge of map, in decimal degrees; left = -105.5 Longitude at left edge of map, in decimal degrees; right = -79

  7. Module:Location map/data/USA Southeast - Wikipedia

    en.wikipedia.org/wiki/Module:Location_map/data/...

    Module:Location map/data/USA Southeast is a location map definition used to overlay markers and labels on an equirectangular projection map of Southeastern United States. The markers are placed by latitude and longitude coordinates on the default map or a similar map image.

  8. The National Map - Wikipedia

    en.wikipedia.org/wiki/The_National_Map

    The National Map is a significant contribution to the U.S. National Spatial Data Infrastructure (NSDI) from the Federal Geographic Data Committee (FGDC) and currently is being transformed to better serve the geospatial community by providing high quality, integrated geospatial data and improved products and services including new generation ...

  9. List of national coordinate reference systems - Wikipedia

    en.wikipedia.org/wiki/List_of_national...

    Given that every projection gives deformations, each country's needs are different in order to reduce these distortions. These national projections, or national Coordinate Reference Systems are officially announced by the relevant national agencies. The list below is a collection of available official national projected Coordinate Reference ...