Dams in Lemhi County, Idaho
13Total Dams
0High Hazard
4Significant
Dam Safety in Lemhi County, Idaho
Lemhi County has 13 dams tracked in the National Inventory of Dams. Another 4 carry a significant hazard classification. Currently, 4 dams have a condition assessment of poor or unsatisfactory.
The average dam in Lemhi County is 61 years old. The most common purpose is irrigation. The tallest dam is Beartrack H2o Overflow Pond at 52 ft.
Explore more: Oldest dams in Idaho · Tallest dams · High risk dams · Largest reservoirs
Data note: Hazard potential describes the consequences if a dam failed; it does not predict the likelihood of failure. Inspection, condition, and emergency-plan fields can be incomplete or delayed. Check state dam-safety officials and local emergency managers for official guidance.
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Shiner Upper | Significant | Fair | 29 | Irrigation | 1968 |
| Kimberly Lake | Significant | Fair | 27 | Recreation | 1970 |
| Boggeman | Significant | Fair | 24 | Other | 1963 |
| Arrowhead Reservoir | Significant | Fair | 20 | Irrigation | 1975 |
| Beartrack H2o Overflow Pond | Low | Satisfactory | 52 | Tailings | 1995 |
| Idaho Cobalt Wmp | Low | Not Rated | 21 | Other | 2019 |
| Beartrack Treatment Lagoon | Low | Satisfactory | 20 | Tailings | 1995 |
| Mill Creek Lake | Low | Fair | 19 | Other | 1928 |
| Gorley Creek | Low | Poor | 19 | Irrigation | 1913 |
| Shiner Lower | Low | Poor | 18 | Irrigation | 1973 |
| Bird Pond | Low | Fair | 17 | Irrigation | 2010 |
| Billy Creek | Low | Poor | 16 | Irrigation | 1916 |
| Gorley Creek Dike | Low | Poor | 16 | Irrigation | 1913 |