Navratil Wpa, located in Roberts, South Dakota, is a federal-owned Earth dam with a height of 9 feet and a length of 374 feet. Completed in 1990, this dam serves the primary purpose of water resource management, providing a storage capacity of 122 acre-feet and a maximum discharge of 740 cubic feet per second. Situated on the tributary of Big Slough Creek, this low hazard potential dam is not currently regulated or inspected by the state.

Despite being classified as "Not Rated" in terms of condition assessment, Navratil Wpa plays a crucial role in mitigating flooding and ensuring water supply reliability in the region. With its strategic location and design, this dam represents a vital infrastructure for climate and water resource enthusiasts to study and monitor. While lacking certain regulatory oversight, the dam's operational efficiency and risk management measures remain a key focus for ongoing maintenance and improvement efforts.