Lake Iowa Dam, located in Riverside, Iowa, was completed in 1962 and serves as a recreational reservoir on Pig Creek. With a dam height of 40 feet and a length of 893 feet, the earth-fill structure holds a maximum storage capacity of 1950 acre-feet and covers a surface area of 92 acres. The dam is owned and regulated by the Iowa Department of Natural Resources, ensuring that it meets state permitting, inspection, and enforcement standards.

Despite its low hazard potential and satisfactory condition assessment, Lake Iowa Dam is equipped with an uncontrolled spillway with a width of 10 feet. The dam is regularly inspected every 5 years, with the most recent assessment conducted in May 2018. The risk assessment for the dam is moderate, indicating a level 3 risk, but no specific risk management measures or emergency action plans have been reported to date. As a key feature for recreation in the area, the dam provides opportunities for boating, fishing, and other water-based activities for enthusiasts interested in water resources and climate.