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This application uses the Mn/DOT BaseMap which has a planning level set of data developed at a scale of 1:24000.
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Due to scheduled maintenance, this service will not be available on Sundays from 12am to 6am. We're sorry for any inconvenience.
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The Minnesota Department of Transportation (Mn/DOT) maintains a Geodetic Database containing information on permanent geodetic control marks and continously operating reference stations located in Minnesota or just outside its boundaries. Permanent geodetic control marks are established for the purpose of providing precise horizontal and vertical control positions for the registration of surveying and mapping activities in the local area. Information about the location of an object based on its geodetic location locates that object in a worldwide geographic information system. The marks have unique identification and year established stamped on the monument disk, usually a 89mm (3 ½ inch) diameter brass or aluminum disk. Monuments consist of material (concrete or metal) that is meant to stay in place for 50 to 100 years or more and have little or no movement due to frost action or activity near the monument. For additional information about Geodesy and related terms and FAQ's, please see the NGS and Mn/DOT Geodetic Unit websites below:
 National Geodetic Survey
Mn/DOT Geodetic Unit
The map allows you to do a spatial search of the statewide map to graphically select and view geodetic monuments and their associated map sheets and reference pictures.
Working with Geodetic Monument Data
Downloading Geodetic Monument Data NEW!
There is a basic set of tools as well as several more advanced sets of tools. These tool sets are contained within the following toolboxes which can be expanded for use.
  Basic Toolbox
 Advanced Toolbox
 Markup Toolbox
 Selection Toolbox
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You may encounter problems if you try to stretch the image onto two or more computer screens.
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