Beal No 3 is a privately owned irrigation dam located in High Valley, Idaho. Built in 1974, this earth dam stands at a height of 29.6 feet and has a hydraulic height of 25.4 feet, serving the primary purpose of irrigation. With a normal storage capacity of 149 acre-feet and a surface area of 14 acres, Beal No 3 plays a crucial role in managing water resources for the surrounding area.

The dam's spillway is uncontrolled with a width of 10 feet, and it has a significant hazard potential, although its condition assessment is currently rated as fair. The last inspection took place in June 2018, with a regular inspection frequency of 4 years. While the risk assessment for Beal No 3 is moderate, there is a need for ongoing risk management measures to ensure the safety and efficiency of the structure.

Located on an unnamed stream near Little Squaw Creek, Beal No 3 is regulated by the Idaho Department of Water Resources, with the Natural Resources Conservation Service being the designer of the dam. With its vital role in irrigation and water management, the upkeep and maintenance of Beal No 3 are essential to safeguarding water resources and mitigating potential risks for the local community and environment.