Elk City Dam, also known as Elk City Lake, is a federal-owned structure located in Montgomery, Kansas. Completed in 1966, this earth dam stands at a height of 107 feet and has a storage capacity of 850,405 acre-feet. Its primary purpose is flood risk reduction, with additional functions including recreation and water supply. The dam spans 4,840 feet in length and has a spillway width of 400 feet, designed to handle a maximum discharge of 120,800 cubic feet per second.

Despite being classified as a high hazard potential dam, the risk of failure at Elk City Dam is considered low due to its low probability of failure and low population at risk downstream. The primary risk lies in erosion along the conduit passing through the dam, which could lead to slow-to-develop failure during rare high pool events. To manage and reduce risks, the US Army Corps of Engineers (USACE) has implemented various measures including routine inspections, emergency exercises, and maintenance activities. Additionally, the dam is equipped with instrumentation and monitoring systems to track changing conditions and ensure structural integrity.

In the event of a large flood, advanced warning systems would be in place to mitigate potential impacts on nearby communities such as Independence and Coffeyville. Despite the risks associated with normal dam operations, USACE's proactive risk management approach aims to safeguard lives and minimize economic losses. Overall, Elk City Dam serves as a critical infrastructure for flood protection and water resource management, supported by continuous efforts to enhance its safety and resilience.