The Michigan State Plane Coordinate System is used to internally store the x,y position of all lines, points, and areas. This system separates the state into three zones: The north zone contains the entire Upper Peninsula; the central zone contains the ? counties including the north of Mason, Lake, Osceola, Clare, Gladwin, and Arenac counties; the south zone contains the remainder of the Lower Peninsula. Coordinate positions are based on the North American Datum of 1927.
Map features are separated into different levels. Files do not contain topological relationships of map features but can be used to create a topologically structured data base.
MIRIS Base Map files are created in an Intergraph IGDS vector format and can be translated to Data Exchange Format (DXF).
Maps are available for purchase from the DNR in both digital and hardcopy formats. They can be ordered by county, township, quadrangle, or 36 square mile area. Check the price list for further information.
Digital MIRIS Base Maps at the county level are available for purchase through the Consortium for International Earth Science Information Network (CIESIN).
Datasets from other organizations containing environmental, earth science, and global change information can be located through the Consortium for International Earth Science Information Network's (CIESIN) Gateway.