Mustard Detention Dam, located in Dawson County, Nebraska, was completed in 1963 by the USDA NRCS for the primary purpose of flood risk reduction along Buffalo Creek. This private earth dam stands at a height of 25 feet with a length of 242 feet, providing a storage capacity of 90 acre-feet and serving a drainage area of 0.9 square miles. Despite being categorized with a low hazard potential, the dam has not been rated for its condition as of the last inspection in November 2017.

Managed by the Nebraska Department of Natural Resources, Mustard Detention Dam plays a vital role in mitigating flood risks in the region. With a structural height matching its hydraulic height, the dam is designed to withstand maximum discharges of up to 458 cubic feet per second. Although the dam has not undergone recent modifications or assessments, it remains an essential infrastructure for water resource management in the area. As a key component of flood control measures, Mustard Detention Dam continues to contribute to the overall resilience of the local water system and ecosystem.