External Services
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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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Dam safety consultants
Prairie du Sac Dam, Sauk County Chapter 31, Wis. Stats. requires owners of large dams to ensure safety of their dams by hiring professional engineers licensed in Wisconsin to perform regular and frequent inspections.
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Projects of special interest
There may be dams of special interest for a variety of reasons. Some ongoing projects are detailed here. Indianford (Lake Koshkonong) Dam The DNR has decision-making authority under Chapter 31, Wis. Stats., to set lake levels. In response to…
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Recurring inspections by owners
In addition to the required consultant inspection and Wisconsin DNR decennial (every 10 years) inspections (high and significant hazard dams only), the owner of a dam should inspect their dam on a regular basis and after any high water event. The…
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Owner responsible professional inspections
Dam inspection by consultants: Dam safety inspections that consulting engineers perform on behalf of dam owners will include file research, a visual inspection of the dam and documentation of the inspection. Consulting engineers will need to…
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Water levels and your property
In order to provide the DNR accurate, quantifiable information about how changing lake levels will affect your property, this information is provided to help you find the current water level and compare it to the shoreline of your property. Find…
- Webpage
Indianford Dam background
Lake Koshkonong is over 10,460 acres in surface area and is located in Jefferson, Dane and Rock counties. The Indianford Dam impounds Lake Koshkonong. The dam is located more than 5 miles downstream of the lake in Rock County. Water level…
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Lake Koshkonong and the Indianford Dam
The Department of Natural Resources has decision-making authority under Chapter 31, Wis. Stats., to set lake levels. In response to the March 8, 2019 petition, the DNR will review the Rock Koshkonong Lake District (RKLD) request to modify Lake…