Pershall, a privately owned dam located in Owyhee County, Idaho, stands as a critical water resource management structure in the region. Built in 1948, this earth dam primarily serves purposes other than flood control or irrigation, with a storage capacity of 50 acre-feet and a drainage area of 1.4 square miles. The dam, standing at a height of 26.9 feet with a hydraulic height of 22.5 feet, harnesses the flow of Rail Creek and Jordan Creek, contributing to the overall water management system in the area.

Despite being classified with low hazard potential and fair condition assessment, Pershall is subject to state regulation and inspection by the Idaho Department of Water Resources. With uncontrolled spillways and a moderate risk assessment rating, the dam poses a certain level of risk that necessitates ongoing monitoring and management. The last inspection in June 2016 revealed a need for continued vigilance, with an inspection frequency of every 5 years to ensure the safety and integrity of the structure. The dam's presence highlights the importance of maintaining a balance between water resource utilization and environmental sustainability in the face of changing climate patterns.