Oak-Middle 68-A, located in Butler, Nebraska, is a local government-owned earth dam designed by the USDA NRCS for flood risk reduction. Completed in 1966, this dam stands at a height of 31 feet and has a structural height of 40 feet, with a total length of 818 feet. It has a storage capacity of 653 acre-feet and serves the primary purpose of flood risk reduction in the area. The dam is regulated by the Nebraska Department of Natural Resources and undergoes regular inspections and enforcement to ensure its safety and efficacy.

Situated on TR-Oak Creek in Nebraska, Oak-Middle 68-A covers a drainage area of 1.7 square miles and has a normal storage capacity of 175 acre-feet. With a low hazard potential and a satisfactory condition assessment, this dam plays a crucial role in mitigating flood risks in the region. The dam has a spillway type and width unspecified, along with no associated locks or gates, but it has a maximum discharge rate of 1016 cubic feet per second.

Despite its age, Oak-Middle 68-A remains a key infrastructure for flood risk management in Butler, Nebraska. With its stone core and soil foundation, this dam continues to provide essential protection to the surrounding area. Regular inspections and maintenance ensure its operational efficiency, highlighting the importance of proactive water resource management in the face of changing climate conditions.