Overflow Dam, located in El Dorado, Kansas, serves as a vital structure for irrigation purposes along the West Branch Walnut River. Completed in 1955, this private dam stands at a height of 18 feet and stretches 900 feet in length, with a storage capacity of 369 acre-feet. Its design features a buttress core type, making it a significant asset for water resource management in the region.

Managed by the Kansas Department of Agriculture, the dam is regulated by the state and undergoes regular inspections to ensure its structural integrity. With a low hazard potential and a condition assessment of "Not Rated," Overflow Dam plays a crucial role in water storage and distribution for agricultural activities in Butler County. Despite its age, the dam continues to fulfill its primary purpose of facilitating irrigation for the local community.

Overflow Dam's strategic location and design make it a key component in the water infrastructure of the region. With its efficient operation and state oversight, this dam contributes to the sustainable management of water resources in Kansas, highlighting the importance of maintaining and monitoring such essential structures for climate and water enthusiasts alike.