Orange barrels on a highway
Interactive Geodetic mapping
View, save and print information about Mn/DOT Geodetic Monuments
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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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Geodetic Monuments


About Geodetic Monuments

The Minnesota Department of Transportation (Mn/DOT) maintains a Geodetic Database containing information on permanent geodetic control marks and continuously 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:



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.




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Printing and Pop-up blocking:

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Viewing the Interactive GIS Map:

This map is best viewed at a screen resolution of 1024 * 768 or higher with colors set to thousands or higher.


You may encounter problems if you try to stretch the image onto two or more computer screens.


Common GIS layers may include:

Roads, railroads, airport runways, navigable waters, state boundary, county boundaries, municipal boundaries, Mn/DOT Districts, civil boundaries, township boundaries, state parks, military reservations, indian reservation land, national forests, national parks, streams, lakes


Geodetic specific layers may include: