The tie sheets are references to help surveyors find the section corners that were set by the General Land Office in 1819 through 1821 and corners that have been set off of those. These corners are the basis of property descriptions and ownership for all property in Marion County. Up-to-date corner ties make preparing surveys quicker and cheaper for all members of the public, landowners, developers, public agencies etc.
The Marion County Surveyor’s Office currently maintains ties on over 2300 corners in Marion County. By State statute we are required to update 5% of these each year. This is one of the main functions of the Marion County Surveyor’s Office.
Newly updated ties are located by use of Global Navigation Satellite System (GNSS) receivers, a combination of the U.S. Global Positioning System (GPS) and the Russian GLONASS system, which aids in recovery of corners in the future, as well as Geographic Information Systems (GIS) and other uses.
Anyone can view these tie sheets, by visiting: http://maps.indy.gov/surveyorviewer
Corner Tie Statictics [JPG,172KB]
Below are examples of some of the reference materials the Marion County Surveyor's Office uses when researching the history of a corner, from the earliest 1852 reference through to the 2013 tie sheet.
All five documents in the images below refer to one point - Section 15, Township 15, Range 5 at Prospect St and Muessing Rd.
Legal Survey [JPG, 164KB]
Read more about Tie Sheets/Tie Sheet Viewer [PDF, 168KB]