Winther Dam, located in Audubon, Iowa, was completed in 1968 and serves multiple purposes including fire protection and providing water for stock or small fish ponds. Owned and regulated by a private entity, the dam is under the jurisdiction of the Iowa Department of Natural Resources. With a height of 25 feet and a length of 538 feet, Winther Dam has a storage capacity of 58 acre-feet and covers a surface area of 4 acres. The dam is primarily made of earth and sits on a soil foundation, making it a crucial structure for water resource management in the area.

Despite being classified as having a low hazard potential, Winther Dam is rated as having a moderate risk level. The dam features an uncontrolled spillway and does not have any outlet gates. While the condition assessment of the dam is currently listed as "not rated," it undergoes regular inspections, permitting, and enforcement by state regulatory agencies. The dam is situated on TR-LONE WILLOW CREEK and falls under the jurisdiction of the Rock Island District of the US Army Corps of Engineers. For water resource and climate enthusiasts, Winther Dam presents an interesting case study in private ownership and management of a vital water infrastructure asset.