Galena Mill No 3 Lower, located in Silverton, Idaho, is a privately owned structure regulated by the Idaho Department of Water Resources. This tailings dam, completed in 1979, stands at a height of 64 feet with a normal storage capacity of 130 acre-feet. Situated on Lake Creek, a tributary of the South Fork Coeur d'Alene River, this earth dam covers a surface area of 4.4 acres and features an uncontrolled spillway with a width of 90 feet.

With a significant hazard potential and a fair condition assessment as of July 2017, Galena Mill No 3 Lower poses a moderate risk in terms of potential failure. While the dam has not been modified in recent years, it undergoes inspections every four years to ensure its structural integrity. The emergency action plan status and risk management measures for this dam are currently undisclosed, indicating a need for continued monitoring and preparedness in the event of an emergency.

Enthusiasts of water resources and climate in the Shoshone County area will find Galena Mill No 3 Lower to be an intriguing structure due to its historical significance, regulatory oversight, and potential environmental impact in the region. As discussions around dam safety and emergency response strategies continue to evolve, staying informed about the condition and risk profile of dams like Galena Mill No 3 Lower is crucial for ensuring the protection of surrounding communities and ecosystems.