Dams
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Inspection, Operation and Maintenance plan (IOM)
An IOM is a major step an owner can take to protect downstream lives and property, protect his/her investment and reduce potential liability. It is a document that identifies who is responsible for operating, inspecting and maintaining a dam. It…
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Emergency Action Plan (EAP)
An EAP is a major step an owner can take to protect downstream lives and property, protect his/her investment and reduce potential liability. It is a formal document that identifies potential emergency conditions at a dam and prescribes…
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Dam Failure Analysis (DFA)
A dam failure analysis (DFA) is required for all large dams under Chapter NR 333, Wis. Adm. Code. It is used for these purposes:
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Wisconsin Dams Data Downloads
The Wisconsin Dam Data Viewer provides spatial and tabular data for the statewide repository of dams.
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Dam Transfer of Ownership
If you are considering selling or buying a property which includes a dam, notify your real estate agent early in the transfer process. Realtors, attorneys and lenders are required by law to advise clients of these requirements. If dam transfer…
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Dam search
Three search tools have been developed to obtain information about dams in Wisconsin. Two search tools determine the inspection schedules for state regulated, large dams and provide selected database information. The third search tool helps…
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Contact information
Regional staff: DNR water management engineers, by county Government contacts Central office staff Tanya Lourigan Dam Safety and Floodplain Mapping Section Chief
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Routine inspections by owners
Dam owners need to perform routine inspections and during and following high water events – in addition to the required professional inspections and DNR decennial (every 10 years) inspections of high and significant hazard dams.The primary purpose…
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Owner's responsibility for professional inspections
Professional engineers are encouraged to watch the Owner-Required Large Dam Inspection Process webinar for an overview of the updated Consultant Inspection Checklist.Large dams require periodic inspection by a professional engineer (PE) licensed in…