18Total Dams
1High Hazard
2Significant
Dam Safety in Union County, Arkansas
Union County has 18 dams tracked in the National Inventory of Dams. Of these, 1 are classified as high hazard — meaning failure would probably cause loss of human life. Another 2 carry a significant hazard classification.
The average dam in Union County is 78 years old. The most common purpose is recreation. The tallest dam is Felsenthal Lock and Dam at 105 ft.
Explore more: Oldest dams in Arkansas · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Arnoname 55 | High | Not assessed | 10 | Recreation | 1924 |
| Felsenthal Lock and Dam | Significant | Not assessed | 105 | Navigation | 1978 |
| H.k. Thatcher Lock and Dam | Significant | Not assessed | 80 | Navigation | 1983 |
| Lake Calion Dam | Low | Not assessed | 28 | Recreation | 1938 |
| Lock and Dam No 6 | Low | Not assessed | 26 | Navigation | 1913 |
| Lock and Dam No 8 | Low | Not assessed | 25 | Navigation | 1911 |
| Harris Lake Dam | Low | Not assessed | 22 | Recreation | 1962 |
| Harper Reservoir Dam | Low | Not assessed | 21 | Recreation | 1968 |
| Lake Lisbon Dam | Low | Not assessed | 18 | Recreation | 1954 |
| J S New's Dam/ Arnoname 49 | Low | Not assessed | 16 | Recreation | 1961 |
| Lake Wingfield No 1 Dam | Low | Not assessed | 14 | Recreation | 1929 |
| Lake Wingfield No 3 Dam | Low | Not assessed | 14 | Recreation | 1928 |
| Arnoname 56 | Low | Not assessed | 13 | Recreation | 1918 |
| Anthony Lake Dam | Low | Not assessed | 12 | Recreation | 1965 |
| Lake Wingfield No 2 Dam | Low | Not assessed | 12 | Recreation | 1929 |
| Lewis Lake Dam | Low | Not assessed | 10 | Recreation | 1969 |
| Arnoname 50 | Low | Not assessed | 8 | Recreation | 1952 |
| Sowell Lake Dam | Low | Not assessed | 8 | Recreation | 1966 |