Dams in Boise County, Idaho
2Total Dams
1High Hazard
0Significant
Dam Safety in Boise County, Idaho
Boise County has 2 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.
The average dam in Boise County is 71 years old. The most common purpose is hydroelectric. The tallest dam is Arrowrock Dam at 350 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 |
|---|---|---|---|---|---|
| Arrowrock Dam | High | Not Available | 350 | Flood Risk Reduction | 1915 |
| Horseshoe Bend Diversion | Low | Fair | 8 | Hydroelectric | 1995 |