South Magnolia Watershed Site 5, located in Harrison County, Iowa, is a crucial asset for fire protection, stock, and small fish pond purposes. Managed by the Natural Resources Conservation Service, this earth dam was completed in 1958 and stands at a height of 37 feet, with a length of 760 feet. The dam has a normal storage capacity of 54 acre-feet and a drainage area of 1.99 square miles, serving the TR-WILLOW CREEK tributary.

Despite having a low hazard potential, the condition of South Magnolia Watershed Site 5 has not been rated, with the last inspection conducted in April 1987. The risk assessment for this dam is moderate, and it is under the jurisdiction of the Iowa Department of Natural Resources. With a surface area of 4.3 acres, this dam plays a significant role in flood risk reduction within the region. Water resource and climate enthusiasts will find this site to be a valuable component of the local water management infrastructure in Iowa.