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Find where to go with your dam or floodplain question!

Contact information
For more information about data viewer mapping, contact:
DNR Dam Safety
DNR Dam Safety Program, WT/3
101 South Webster Street
PO BOX 7921
Madison WI 53707–7921

Data downloads

Geographic Information Systems

Below is a shapefile of Wisconsin dams that can be used in ArcGIS. The shapefile contains points which represent the locations for all dams recorded in the dam safety database. The shapefile is updated occasionally, so make sure to check back for the most up to date version.

Click on the link to download a zipped version of the shapefile, metadata and associated files. It is recommended that you save this zip file to your hard drive, and open it from there.

Database downloads

Check for recent data downloads to see if the information you are looking for can be found in this spreadsheet. Please save the data to your local drive before viewing!

  1. Statewide Dams [ZIP] (updated Tuesday February 19 2019)
  2. Data dictionary [PDF] – this document will help users decode the field names in the data downloads listed above.

For more information on Geographic Information Systems and other available DNR GIS layers, visit the GIS page.

Last revised: Monday June 18 2018