Lamb Upper, located in the Big Muddy Oil Field in Converse, Wyoming, is a privately-owned earth dam completed in 1953 for irrigation purposes. With a height of 28 feet and a length of 280 feet, the dam stores a maximum of 171 acre-feet of water from Brushy Draw and TR East Muddy Creek, covering a surface area of 14 acres. Despite its low hazard potential, Lamb Upper is in poor condition as of the last inspection in 2017, with an inspection frequency of 5 years.

The dam's spillway type is uncontrolled, with a width of 12 feet, and it has one valve as the outlet gate. Although the risk assessment categorizes Lamb Upper as having moderate risk, there are no specific risk management measures or emergency action plans documented for the structure. Over the years, the dam has not undergone any significant modifications or improvements, raising concerns about its long-term safety and stability in the face of changing climate conditions and water resource management challenges.

For water resource and climate enthusiasts, Lamb Upper presents an opportunity to explore the intersection of aging dam infrastructure, irrigation needs, and environmental risk mitigation. As discussions around dam safety and resilience continue to evolve, the case of Lamb Upper serves as a reminder of the importance of proactive maintenance, emergency preparedness, and holistic risk management strategies in safeguarding water resources and communities in the face of a changing climate.