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 451–475 of 704
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Neshkoro Marquette County | 19 | 1852 | Low | Poor |
| Neshonoc La Crosse County | 18 | 1914 | Low | Satisfactory |
| New Auburn Wildlife Area Barron County | 7 | 1978 | Low | Not Rated |
| New Lisbon Juneau County | 18 | 1938 | Low | Fair |
| Newman Springs Price County | 8 | — | Low | Not Rated |
| New Wood Lincoln County | 7 | 1977 | Low | Fair |
| Nihles Grant County | 25 | — | Low | Fair |
| No Name Jackson County | 7 | — | Low | Fair |
| Nordby Barron County | 23 | 1963 | Low | Poor |
| North Pelican Oneida County | 11 | 1908 | Low | Satisfactory |
| Northridge Lakes Res. Devlop Milwaukee County | 11 | 1969 | Low | Fair |
| Oconomowoc Lake Waukesha County | 7 | 1899 | Low | Fair |
| Oconto Falls Lower Oconto County | 22 | 1857 | Low | Satisfactory |
| Ogema Price County | 13 | 1875 | Low | Fair |
| Oines Trempealeau County | 26 | 1976 | Low | Fair |
| Okauchee Lake Waukesha County | 18 | 1961 | Low | Satisfactory |
| O'Neil Flowage 1 Chippewa County | 10 | 1965 | Low | Fair |
| O'Neil Flowage 2 Chippewa County | 9 | 1965 | Low | Fair |
| Ormsby Langlade County | 12 | 1901 | Low | Fair |
| Osseo Rod and Gun Club Trempealeau County | 22 | 1964 | Low | Fair |
| Otter Creek 12 Iowa County | 58 | 1972 | Low | Fair |
| Otter Lake Chippewa County | 25 | 1964 | Low | Satisfactory |
| Owen City Clark County | 14 | 1938 | Low | Fair |
| Oxbo Flowage Langlade County | 8 | — | Low | Fair |
| Oxford Marquette County | 25 | 1849 | Low | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.