Rumney No. 2, located in Niobrara, Wyoming, is a privately owned earth dam built in 1950 for the primary purpose of irrigation along the Scoby Draw river. With a dam height of 29 feet and a storage capacity of 320 acre-feet, this structure plays a crucial role in managing water resources in the region. Despite its low hazard potential, a recent inspection in June 2019 found the condition of Rumney No. 2 to be unsatisfactory, indicating a need for maintenance and potential improvements.

The dam's spillway, an uncontrolled type with a width of 110 feet, provides critical flood control measures to mitigate potential risks. Furthermore, the presence of a slide gate for outlet control adds to the operational efficiency of the structure. Although the risk assessment categorizes Rumney No. 2 as moderate, the structure's capacity to meet irrigation demands and contribute to the overall water management in the area underscores its importance for sustainable agriculture and climate resilience initiatives. Climate enthusiasts and water resource experts alike will find Rumney No. 2 an intriguing case study in balancing water supply security with infrastructure maintenance challenges.