Viking Lake Dam in Villisca, Iowa, is a state-owned structure regulating Dunn's Creek with a significant hazard potential but a satisfactory condition assessment as of July 2017. Completed in 1957, this earthen dam stands at 69 feet tall and spans 1,220 feet, providing essential recreation opportunities with a storage capacity of 3,450 acre-feet. The dam's primary purpose is recreation, serving as a popular destination for water resource and climate enthusiasts in Montgomery County.

Located in the Kansas City District and under the regulatory oversight of the Iowa DNR, Viking Lake Dam boasts a surface area of 148 acres and a drainage area of 3.42 square miles. Despite its uncontrolled spillway type with a width of 10 feet, the dam has no outlet gates or locks. With a moderate risk assessment ranking, the dam undergoes inspections every five years to ensure its safe operation and compliance with state regulations. For water resource and climate enthusiasts looking to explore the intersection of infrastructure and natural beauty, Viking Lake Dam offers a captivating destination in the heart of Iowa's picturesque landscape.