Wisconsin Dams

968 dams tracked by the National Inventory of Dams

Total Dams

968

High Hazard

180

18.6%

Poor / Unsatisfactory

63

Average Age

89 yrs

Hazard Classification

High180 (18.6%)
Significant84 (8.7%)
Low704 (72.7%)

Condition Assessment

Satisfactory239 (24.7%)
Fair509 (52.6%)
Poor / Unsatisfactory63 (6.5%)
Not Rated157 (16.2%)

Federal

65

State

127

Local

407

Private

280

Tallest Dams

High Hazard Dams

Poor Condition Dams

All Dams in Wisconsin

Showing 126150 of 239

Dam NameHeight (ft)YearHazardCondition
Lower Eau Claire Lake

Douglas County

121938LowSatisfactory
Lower May Coulee

Jackson County

232011LowSatisfactory
Lower Nine Mile

Oneida County

121907LowSatisfactory
Lower Power

St. Croix County

221866LowSatisfactory
Lower Watertown Dam

Jefferson County

131904LowSatisfactory
Magruder

Sauk County

291970LowSatisfactory
Marion

Waupaca County

171880HighSatisfactory
Mauston

Juneau County

141919LowSatisfactory
May Coulee

Jackson County

221976LowSatisfactory
Mcdill

Portage County

211855SignificantSatisfactory
Mcmillan Marsh

Marathon County

111971LowSatisfactory
Meinhardt

Richland County

251968HighSatisfactory
Mendota Locks

Dane County

161849HighSatisfactory
Merrill

Lincoln County

231913LowSatisfactory
Middle Appleton

Outagamie County

111930LowSatisfactory
Minocqua

Oneida County

91909LowSatisfactory
Mishicot

Manitowoc County

111846LowSatisfactory
Monterey

Waukesha County

161848LowSatisfactory
Mt Horeb

Dane County

341940HighSatisfactory
Mukwonago

Waukesha County

101848LowSatisfactory
Murray

Price County

181880SignificantSatisfactory
Musser

Price County

211936LowSatisfactory
Namekagon

Bayfield County

91886HighSatisfactory
Navarino 15 Ac Flowage

Shawano County

71995LowSatisfactory
Navarino Marsh 2

Shawano County

91971LowSatisfactory
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.