Melvern Dam, also known as Melvern Lake, is a Federal-owned structure located in Osage County, Kansas, along the Marais des Cygnes River. Completed in 1972, this Earth-type dam stands at a hydraulic height of 123 feet, with a structural height of 98 feet and a length of 9750 feet. It has a storage capacity of 363,000 acre-feet and serves multiple purposes including flood risk reduction, recreation, and water supply.

Managed by the US Army Corps of Engineers, Melvern Dam poses a high hazard potential and undergoes regular inspections and risk assessment measures to ensure its structural integrity. The dam's emergency action plan is meticulously maintained, emphasizing the importance of public awareness and preparedness in the event of a dam-related emergency. USACE works closely with local authorities to develop evacuation plans and conduct necessary repairs to mitigate flood risks associated with the dam.

Despite the risks, Melvern Dam plays a crucial role in managing water levels and alleviating pressure during severe weather events. With a focus on proactive risk management and continual maintenance, the dam remains a vital asset in protecting the surrounding communities from potential flooding incidents.