University of Wisconsin–Madison

Coordinate Reference Systems

Coordinate systems are used to accurately identify locations on the Earth’s surface, and are one of the fundamental building blocks that make modern Geographic Information Systems possible. Many of the links below refer to our 2009 publication, Wisconsin Coordinate Reference Systems. This 119-page publication is a revision of the Wisconsin Coordinate Systemshandbook published by the SCO in 1995. The new handbook contains expanded information on coordinate reference systems commonly used in Wisconsin.

Last updated: September 22, 2017