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 826–850 of 930
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Sunrise River Pool 3 Chisago County | 18 | 1965 | Low | Fair |
| Swan Lake Kandiyohi County | 11 | 1941 | Low | Satisfactory |
| Swan Lake Steele County | 7 | 1970 | Low | Fair |
| Swan Lake Nicollet County | 8 | 1977 | Low | Satisfactory |
| Swanson, Holm & Hemmah Group Goodhue County | 30 | 1959 | Low | Poor |
| Swart Watts Lake Wright County | 8 | 1941 | Low | Satisfactory |
| Swenson Wetland Grant County | 16 | 1999 | Low | Fair |
| Swift Falls Swift County | 15 | 1967 | Low | Satisfactory |
| Sylvan Dike No. 2 Morrison County | 8 | 1913 | Low | Satisfactory |
| Talcot Lake Cottonwood County | 11 | 1941 | Low | Not Rated |
| Talcot Lake Wma-Frerichs Cottonwood County | 8 | 1970 | Low | Satisfactory |
| Tallgrass Wildlife Refuge Lincoln County | 21 | — | Low | Not Rated |
| Tamarack Wetland Mahnomen County | 10 | 1975 | Low | Not Rated |
| Tamarac Lake Outlet Polk County | 10 | 1930 | Low | Poor |
| Tamarac River R1 Marshall County | 21 | 1975 | Low | Satisfactory |
| Tanberg 7 Wilkin County | 20 | 2009 | Low | Satisfactory |
| Ten Mile Lake Otter Tail County | 7 | 1937 | Low | Fair |
| Tetonka Ridge Lincoln County | 52 | — | Low | Poor |
| Thibert Red Lake County | 30 | — | Low | Satisfactory |
| Thief Lake Marshall County | 19 | 1931 | Low | Satisfactory |
| Thief River Falls Pennington County | 25 | 1946 | Low | Satisfactory |
| Thompson Wetland Otter Tail County | 14 | 1997 | Low | Satisfactory |
| Thunder Lake Cass County | 18 | 1934 | Low | Not Rated |
| Timm Lake Yellow Medicine County | 8 | 1924 | Low | Fair |
| Titlow Lake Sibley County | 9 | 1920 | Low | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.