Mcmaster is a privately owned dam located in Niobrara, Wyoming, along the Niobrara River. Built in 1951 by designer Austin P. Russell, this earth dam stands at a height of 18 feet and serves multiple purposes, including fire protection, stock, and small fish pond management. With a storage capacity of 176 acre-feet, McMaster plays a crucial role in water resource management in the area.

Despite being classified as having a low hazard potential and fair condition assessment, McMaster undergoes regular inspections and is regulated by the State of Wyoming. The dam features an uncontrolled spillway, a valve outlet gate, and a spillway width of 90 feet. The risk assessment for McMaster is rated as moderate, indicating the need for ongoing monitoring and risk management measures to ensure the safety and integrity of the structure.

Overall, McMaster serves as a vital infrastructure for water resource management in the region, providing essential services for fire protection, livestock, and fish pond maintenance. With its strategic location along the Niobrara River, this dam stands as a testament to the importance of sustainable water management practices in the face of changing climate conditions.