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 401–425 of 930
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Mille Lacs Mille Lacs County | 8 | 2015 | Low | Satisfactory |
| Mill Creek Stearns County | 13 | 1870 | Low | Satisfactory |
| Middle Lake Nicollet County | 7 | 1946 | Low | Satisfactory |
| Mesabi Chief Tailings 3 Itasca County | 24 | 1960 | Low | Satisfactory |
| Mesabi Chief Tailings 2 Itasca County | 40 | 1952 | Low | Satisfactory |
| Mesabi Chief Clarification Itasca County | 24 | 1960 | Low | Satisfactory |
| Merten'S Redwood County | 7 | 1979 | Low | Satisfactory |
| Mcpherson 25 Blue Earth County | 10 | — | Low | Not Rated |
| Mcknight Lake Carver County | 8 | — | Low | Satisfactory |
| Mcdougal Lake Lake County | 10 | 1942 | Low | Not Rated |
| Mcdonald Lakes Otter Tail County | 7 | 1937 | Low | Satisfactory |
| Mayowood Lake Olmsted County | 25 | 1920 | Low | Satisfactory |
| Mayhew Lake Benton County | 9 | 1949 | Low | Satisfactory |
| Maxa Pond Scott County | 17 | 1978 | Low | Not Rated |
| Mashaug Creek Dam No. 3 Norman County | 35 | 1977 | Low | Fair |
| Mashaug Creek 10 Norman County | 30 | 1984 | Low | Satisfactory |
| Marsh Dam Swift County | 28 | 1942 | Low | Not Available |
| Marshall Lake Becker County | 15 | 1972 | Low | Fair |
| Marquardt Pond Swift County | 13 | 1971 | Low | Fair |
| Marlu Mill Pond Pope County | 20 | 1967 | Low | Fair |
| Margaret Lake Isanti County | 18 | 1966 | Low | Not Rated |
| Maple River Diversion Faribault County | 7 | — | Low | Fair |
| Maple Lake Polk County | 8 | 1942 | Low | Not Rated |
| Many Point Lake Becker County | 12 | 1938 | Low | Fair |
| Mantorville Dodge County | 13 | 1888 | Low | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.