Smoky Canyon No 1, also known as Simplot Mine Tailings Dam #1, is a privately owned dam located in Caribou, Idaho. Completed in 1983, this earthen dam stands at a height of 80 feet and has a hydraulic height of 74 feet. It serves the primary purpose of storing tailings and has a storage capacity of 2,500 acre-feet with a surface area of 83 acres.

The dam is situated near Roberts Creek and Tygee Creek, with a drainage area of 1.34 square miles. Despite its uncontrolled spillway type, the hazard potential of Smoky Canyon No 1 is classified as low, with a fair condition assessment as of the last inspection in November 2017. The risk assessment for the dam is moderate, and it is regulated by the Mine Safety and Health Administration.

In the realm of water resource and climate enthusiasts, Smoky Canyon No 1 presents an intriguing case study of a privately owned tailings dam in a remote location. With its unique design features and regulatory oversight, this dam serves as a focal point for discussions on dam safety, risk management, and environmental impact assessments in the context of mining operations.