32Total Dams
3High Hazard
4Significant
Dam Safety in Williams County, North Dakota
Williams County has 32 dams tracked in the National Inventory of Dams. Of these, 3 are classified as high hazard — meaning failure would probably cause loss of human life. Another 4 carry a significant hazard classification. Currently, 2 dams have a condition assessment of poor or unsatisfactory.
The average dam in Williams County is 65 years old. The most common purpose is recreation. The tallest dam is Blacktail Dam at 63 ft.
Explore more: Oldest dams in North Dakota · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Mcgregor Dam | High | Poor | 45 | Recreation | 1967 |
| Tioga Dam | High | Poor | 39 | Recreation | 1963 |
| Garrison Dam - Williston Levee | High | Not assessed | 28 | Flood Risk Reduction | 1953 |
| Blacktail Dam | Significant | Not assessed | 63 | Recreation | 1959 |
| Epping Dam | Significant | Not assessed | 56 | Recreation | 1935 |
| Iverson Dam; Marvin | Significant | Not assessed | 35 | Recreation | 1964 |
| Significant | Not assessed | 15 | Other | ||
| Olson Fish Dam; Willard | Low | Not assessed | 50 | Recreation | 1969 |
| Kota Ray Dam | Low | Not assessed | 46 | Recreation | 1933 |
| Low | Not assessed | 34 | Other | ||
| Nordell Dam | Low | Not assessed | 29 | Irrigation | 1962 |
| Harmon Dam; Carl | Low | Not assessed | 25 | Fire Protection, Stock, Or Small Fish Pond | 1987 |
| Nelson Dam; Selmar | Low | Not assessed | 24 | Recreation | 1975 |
| Holm Dam; Alfred H 2 | Low | Not assessed | 24 | Fish and Wildlife Pond | 1968 |
| Olson Dam; Roger | Low | Not assessed | 23 | Irrigation | 1980 |
| Nd No Name 156 | Low | Not assessed | 23 | Fire Protection, Stock, Or Small Fish Pond | 1934 |
| Ray Railroad Dam | Low | Not assessed | 20 | Recreation | 1890 |
| Irgens Dam; Jim & Tom 3 | Low | Not assessed | 20 | Recreation | 1978 |
| Twin Lakes Park D.2 (low) | Low | Not assessed | 20 | Recreation | 1933 |
| Iverson Dam; Eugene | Low | Not assessed | 18 | Fire Protection, Stock, Or Small Fish Pond | 2006 |
| Aslakson Dam; Royce | Low | Not assessed | 17 | Fire Protection, Stock, Or Small Fish Pond | 2007 |
| Mortenson Dam; Steven | Low | Not assessed | 15 | Other | |
| Nd State Land Dept Dam 13 | Low | Not assessed | 10 | Fire Protection, Stock, Or Small Fish Pond | 2005 |
| Solberg Dam; Dorvan | Low | Not assessed | 10 | Fish and Wildlife Pond | 1930 |
| Lake Zahl Dam | Low | Not assessed | 9 | Fish and Wildlife Pond | 1937 |
| Undetermined | Not assessed | 24 | Other | ||
| Undetermined | Not assessed | 17 | Other | ||
| Undetermined | Not assessed | 17 | Other | ||
| Undetermined | Not assessed | 17 | Other | ||
| Undetermined | Not assessed | 17 | Other | ||
| Undetermined | Not assessed | 10 | Other | ||
| Undetermined | Not assessed | 9 | Other |