Minnesota Dams
1,122 dams tracked by the National Inventory of Dams
Total Dams
1,122
High Hazard
43
3.8%
Poor / Unsatisfactory
80
Average Age
61 yrs
Hazard Classification
High43 (3.8%)
Significant122 (10.9%)
Low930 (82.9%)
Condition Assessment
Satisfactory539 (48.0%)
Fair203 (18.1%)
Poor / Unsatisfactory80 (7.1%)
Not Rated300 (26.7%)
Federal
107
State
269
Local
325
Private
395
Tallest Dams
- Erie Basin 2250 ft
- Erie Basin 1200 ft
- Essar Steel Tailings Basin200 ft
- Poly Met Hrf Dam111 ft
- Canisteo No. 2 North100 ft
High Hazard Dams
Poor Condition Dams
- Rapidan Unsatisfactory
- Tetonka RidgePoor
- Lake BronsonPoor
- Pickwick MillPoor
- Schmidt PondPoor
All Dams in Minnesota
Showing 426–450 of 930
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Lake Marshall 33 Lyon County | 17 | 1991 | Low | Fair |
| Lake Miltona Douglas County | 8 | 1937 | Low | Fair |
| Lake Minnetonka Hennepin County | 8 | — | Low | Satisfactory |
| Lake Okabena Nobles County | 12 | 1941 | Low | Fair |
| Lake Osakis 1 Todd County | 8 | 1938 | Low | Fair |
| Lake Ossawinnamakee Crow Wing County | 10 | 1937 | Low | Satisfactory |
| Lake Shaokatan Lincoln County | 8 | 1917 | Low | Satisfactory |
| Lake Shetek Inlet Murray County | 8 | 1939 | Low | Satisfactory |
| Lake Shetek Outlet Murray County | 12 | 1873 | Low | Satisfactory |
| Lake Valley 34 Traverse County | 15 | — | Low | Fair |
| Lake Yankton Lyon County | 8 | 1942 | Low | Satisfactory |
| Lake Zumbro Cdf Olmsted County | 37 | 2019 | Low | Not Rated |
| Lammi SCS Lake County | 15 | 1972 | Low | Satisfactory |
| La Moyne Detention Olmsted County | 29 | 1971 | Low | Satisfactory |
| Langhorst Pond Carlton County | 11 | 1967 | Low | Satisfactory |
| Latendresse Red Lake County | 32 | 1972 | Low | Satisfactory |
| Lawstuen Pond Fillmore County | 28 | 1961 | Low | Poor |
| Lecy-Huseby Redwood County | 13 | 1988 | Low | Fair |
| Ledebuhr Houston County | 27 | 2005 | Low | Satisfactory |
| Lehmann Detention Lincoln County | 18 | — | Low | Satisfactory |
| Lehmann Pond Becker County | 13 | 1968 | Low | Fair |
| Lehmann Wetland Lincoln County | 9 | 2000 | Low | Satisfactory |
| Lenz Detention Wabasha County | 28 | 1967 | Low | Satisfactory |
| Leslie Helickson Detention Fillmore County | 30 | 1983 | Low | Satisfactory |
| Limestone 1 Lincoln County | 26 | 1995 | Low | Not Rated |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.