Duncan Dam, located in Buffalo, Nebraska, is a privately owned structure that serves the primary purpose of flood risk reduction along the TR-Cedar Creek. Completed in 1960, this earth dam stands at a height of 13 feet with a length of 330 feet, providing a maximum storage capacity of 93.7 acre-feet and a normal storage of 53.8 acre-feet. Despite its low hazard potential, the dam is currently assessed to be in poor condition as of March 2020.

Managed by the Nebraska Department of Natural Resources, Duncan Dam is regulated, permitted, inspected, and enforced by the state agency to ensure its safety and functionality. With a designated inspection frequency of 5 years, the dam's emergency action plan status, risk assessment, and management measures remain unspecified. Though lacking in certain areas, the dam continues to play a crucial role in mitigating flood risks within the region.

Water resource and climate enthusiasts can appreciate the significance of Duncan Dam in safeguarding the surrounding area from potential flooding events, showcasing the intricate balance between infrastructure development and environmental protection. As one of the key structures in flood risk reduction efforts, Duncan Dam stands as a testament to the ongoing importance of maintaining and improving water management systems to address the challenges posed by climate change and extreme weather events.