Frd No 20, also known as the City of Atchison Dam 20, is a local government-owned structure located in Atchison, Kansas. Built in 1965 by USDA NRCS, this earth dam stands at a height of 44.6 feet and serves the primary purpose of flood risk reduction along the White Clay Creek-TR. With a storage capacity of 138 acre-feet and a surface area of 3.79 acres, Frd No 20 plays a crucial role in mitigating potential hazards in the area.

Managed by the Kansas Department of Agriculture, Frd No 20 is subject to state regulations, inspections, and enforcement to ensure its structural integrity and overall safety. With a satisfactory condition assessment and a high hazard potential, regular inspections are conducted to monitor its performance. Despite its age, Frd No 20 continues to meet guidelines for emergency action plans and risk management measures, highlighting its importance in safeguarding the local community from potential flooding events.

As part of the Rock Island District, Frd No 20 is a vital component of the local water resource infrastructure, providing essential flood protection for the surrounding area. With its strategic location and design features, this earth dam remains an essential asset for the City of Atchison and the state of Kansas in managing water resources and climate-related risks.