Brannan No. 2, located in Sweetwater, Wyoming, is a privately owned earth dam completed in 1937 for the primary purpose of irrigation. With a height of 8 feet and a hydraulic height of 4 feet, this dam on Bear Creek has a storage capacity of 401 acre-feet and a surface area of 111 acres. Despite its low hazard potential, the dam's condition assessment is poor, with the last inspection in October 2017 revealing maintenance issues.

The dam features an uncontrolled spillway with a width of 200 feet and one valve outlet gate. While the risk assessment indicates a moderate risk level, the dam's emergency action plan status and adherence to guidelines are unclear. The dam's location and design make it a crucial resource for water management in the region, serving not only for irrigation but also fire protection, stock watering, and small fish pond purposes. Climate and water resource enthusiasts may find Brannan No. 2 an intriguing case study in dam infrastructure maintenance and risk management in the face of changing environmental conditions.