Dams in Williams County, North Dakota
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 Available | 28 | Flood Risk Reduction | 1953 |
| Blacktail Dam | Significant | Not Rated | 63 | Recreation | 1959 |
| Epping Dam | Significant | Not Rated | 56 | Recreation | 1935 |
| Iverson Dam; Marvin | Significant | Not Rated | 35 | Recreation | 1964 |
| Significant | Not Rated | 15 | Other | ||
| Olson Fish Dam; Willard | Low | Not Rated | 50 | Recreation | 1969 |
| Kota Ray Dam | Low | Not Rated | 46 | Recreation | 1933 |
| Low | Not Rated | 34 | Other | ||
| Nordell Dam | Low | Not Rated | 29 | Irrigation | 1962 |
| Harmon Dam; Carl | Low | Not Rated | 25 | Fire Protection, Stock, Or Small Fish Pond | 1987 |
| Nelson Dam; Selmar | Low | Not Rated | 24 | Recreation | 1975 |
| Holm Dam; Alfred H 2 | Low | Not Rated | 24 | Fish and Wildlife Pond | 1968 |
| Olson Dam; Roger | Low | Not Rated | 23 | Irrigation | 1980 |
| Nd No Name 156 | Low | Not Rated | 23 | Fire Protection, Stock, Or Small Fish Pond | 1934 |
| Ray Railroad Dam | Low | Not Rated | 20 | Recreation | 1890 |
| Irgens Dam; Jim & Tom 3 | Low | Not Rated | 20 | Recreation | 1978 |
| Twin Lakes Park D.2 (low) | Low | Not Rated | 20 | Recreation | 1933 |
| Iverson Dam; Eugene | Low | Not Rated | 18 | Fire Protection, Stock, Or Small Fish Pond | 2006 |
| Aslakson Dam; Royce | Low | Not Rated | 17 | Fire Protection, Stock, Or Small Fish Pond | 2007 |
| Mortenson Dam; Steven | Low | Not Rated | 15 | Other | |
| Nd State Land Dept Dam 13 | Low | Not Rated | 10 | Fire Protection, Stock, Or Small Fish Pond | 2005 |
| Solberg Dam; Dorvan | Low | Not Rated | 10 | Fish and Wildlife Pond | 1930 |
| Lake Zahl Dam | Low | Not Rated | 9 | Fish and Wildlife Pond | 1937 |
| Undetermined | Not Rated | 24 | Other | ||
| Undetermined | Not Rated | 17 | Other | ||
| Undetermined | Not Rated | 17 | Other | ||
| Undetermined | Not Rated | 17 | Other | ||
| Undetermined | Not Rated | 17 | Other | ||
| Undetermined | Not Rated | 10 | Other | ||
| Undetermined | Not Rated | 9 | Other |