Turner Dam, located in Sioux, Nebraska, along the South Antelope Creek, was completed in 1940 for irrigation purposes. This private Earth dam stands at 25 feet high with a length of 566 feet, providing a storage capacity of 428 acre-feet. Despite its age, the dam has a low hazard potential but is in poor condition as of its last inspection in October 2017, conducted by the Nebraska Department of Natural Resources.

Managed by private owners, Turner Dam is regulated by the state and undergoes regular inspections, with a frequency of every 5 years. While the dam's primary purpose is irrigation, its location within the Omaha District of the US Army Corps of Engineers highlights its importance in water resource management. The dam's proximity to Ardmore SD and its role in controlling the flow of the South Antelope Creek make it a crucial infrastructure for the region.

Although Turner Dam currently has a poor condition assessment, its significance in providing water for agricultural needs in the area cannot be understated. With its low hazard potential and regulated status, ongoing maintenance and potential rehabilitation efforts could ensure the continued safe operation of this vital water resource infrastructure in Nebraska's Sioux County.