Located in St. Ansgar, Iowa, the Otranto Dam is a gravity-type structure built in 1902 for recreational purposes along the Cedar River. With a height of 7 feet and a length of 170 feet, the dam provides a storage capacity of 168 acre-feet and covers a surface area of 48 acres. Despite its low hazard potential, the dam is regulated by the Iowa Department of Natural Resources and undergoes regular inspections, permitting, and enforcement to ensure its safety and compliance with state regulations.

The Otranto Dam is situated in Mitchell County, Iowa, under the jurisdiction of the Rock Island District of the US Army Corps of Engineers. While it has not been modified in recent years and its condition remains unrated, the dam poses a moderate risk, prompting the need for ongoing risk assessment and management measures. The dam features an uncontrolled spillway and is surrounded by a drainage area of 656 square miles. As a key recreational attraction in the area, the dam serves as a vital water resource for the community while offering opportunities for outdoor activities and enjoyment.

Despite its age, the Otranto Dam continues to be a significant landmark in the region, providing both recreational benefits and essential water storage capacity. With its historical significance and environmental impact on the Cedar River, the dam underscores the importance of sustainable water resource management and climate resilience efforts in the face of changing weather patterns and increasing risks associated with dam safety.