(SPC) A commonly used mapping coordinate system that in Wisconsin has 3 zones: north, central, and south. See Also: coordinate system More information on Wisconsin Coordinate Systems.

A system of plane-rectangular coordinates established by the federal government. The system is used for defining positions of points on, above, or below the earth's surface in terms of x and y values directly related to geographic (latitude and longitude) coordinates. One or more zones exists for each state in the US (see New Hampshire State Plane Coordinate System).

A method developed by the National Geodetic Survey for mapping each state within a grid system.

is a locational reference system developed in the 1930s which provides positional descriptions accurate to 1 foot in 10,000 within the United States. The SPC system divides the United States into 125 zones (5 cover Texas) and employs both Lambert conformal and Tranverse Mercator projections (depending upon a state's size and shape). Within any given SPC zone, X-Y coordinates are given in eastings and northings. A central meridian passes each zone and is given a false easting of 2 million feet. A false northing of 0 feet is established below the southern limit of each zone.

Coordinate systems established by the U.S. Coast and Geodetic Survey (now the National Ocean Survey), usually one for each state, for use in defining positions of points in terms of plane rectangular (x,y) coordinates.

In states added to the Union after those in the original territory of the 13 colonies (Texas being a notable exception), the state plane coordinate system was developed for property ownership descriptions. Property descriptions include meridian, township, range, section and often sub-section identifiers.

A coordinate system that defines map coordinates by zones for each U.S. state North-south extending zones use the Transverse Mercator projection, while those with east-west extent use the Lambert Conformal Conic projection.

One of the plane rectangular coordinate systems, one for each State in the Union, established by the U.S. Coast and Geodetic Survey for use in specifying locations of geodetic stations in terms of plane rectangular Cartesian coordinates. Most states are individually mapped by a conformal map projection in one or more zones, over each of which is placed a rectangular grid. A relationship between the rectangular grid and the graticule generated by the map projection is established mathematically. Zones of limited extent east-west and indefinite extent north-south are mapped by the Lambert conformal conic map projection with two standard parallels. All such geodetic locations determined by the U.S. National Geodetic Survey (NGS) are transformed into plane rectangular coordinates on the proper grid, and distributed by the NGS together with the geodetic coordinates.

System of X,Y coordinates defined by the USGS for each state. Locations are based on the distance from an origin point defined for each state.

The State Plane Coordinate System (SPS or SPCS) is a set of more than 100 geographic coordinate systems designed for specific regions of the United States. Each state contains one or more state plane zones, the boundaries of which usually follow county lines. The system is widely used for geographic data by state and local governments.