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
- Superior Falls138 ft
- Eau Galle Dam127 ft
- Flambeau 92 ft
- Hatfield 92 ft
- Plum Creek 288 ft
High Hazard Dams
- Eau Galle DamHigh
- Flambeau High
- Hatfield High
- Plum Creek 2High
- High Falls High
Poor Condition Dams
- West Fork Kickapoo 1Unsatisfactory
- DoyleUnsatisfactory
- Coon Creek 21Unsatisfactory
- Rock FallsPoor
- Garden Valley 10Unsatisfactory
All Dams in Wisconsin
Showing 176–200 of 509
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Olson Meadows Flowage Douglas County | 11 | 1975 | High | Fair |
| Old Stone Mill Walworth County | 17 | 1839 | High | Fair |
| Old Paper Mill Walworth County | 15 | 1914 | High | Fair |
| Oines Trempealeau County | 26 | 1976 | Low | Fair |
| Ogema Price County | 13 | 1875 | Low | Fair |
| Oconomowoc Lake Waukesha County | 7 | 1899 | Low | Fair |
| Northridge Lakes Res. Devlop Milwaukee County | 11 | 1969 | Low | Fair |
| No Name Jackson County | 7 | — | Low | Fair |
| Nihles Grant County | 25 | — | Low | Fair |
| New Wood Lincoln County | 7 | 1977 | Low | Fair |
| New Lisbon Juneau County | 18 | 1938 | Low | Fair |
| Neshoto Manitowoc County | 15 | 1914 | High | Fair |
| Neosho Dodge County | 12 | 1840 | Low | Fair |
| Nelligan Lake Marinette County | 23 | 1968 | High | Fair |
| Necedah Wildlife Refuge 30 Juneau County | 15 | 1975 | Low | Fair |
| Navarino Marsh - 80 Ac Flowag Shawano County | 7 | — | Low | Fair |
| Navarino Marsh 3 Shawano County | 9 | 1971 | Low | Fair |
| Navarino Marsh 1 Shawano County | 7 | 1971 | Low | Fair |
| Murrays Bayfield County | 13 | 1941 | Low | Fair |
| Murphy Rusk County | 22 | 1994 | Low | Fair |
| Mravik Taylor County | 11 | 1967 | Low | Fair |
| Moyle Price County | 10 | 1954 | Low | Fair |
| Moose Lake 1 Sawyer County | 23 | 1897 | High | Fair |
| Montello Granite Marquette County | 24 | 1914 | High | Fair |
| Monson Flowage Taylor County | 9 | 1962 | Low | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.