Soap Creek Watershed Site 4-38a, located in Floris, Iowa, is a local government-owned earth dam designed by USDA NRCS for flood risk reduction along Tr- South Soap Creek. Completed in 2001, this dam stands at 29 feet in height and spans 450 feet in length, with a storage capacity of 122 acre-feet. With a low hazard potential and a moderate risk assessment rating, this dam plays a crucial role in mitigating flood risks in the area.

Managed by the Iowa DNR, this dam is state-regulated, permitted, inspected, and enforced, ensuring its structural integrity and functionality. Despite not being rated for condition assessment, Soap Creek Watershed Site 4-38a continues to serve its primary purpose effectively. With a surface area of 4.5 acres and a drainage area of 0.45 square miles, this dam is equipped with an uncontrolled spillway and has not been modified since its completion.

As an essential infrastructure for flood management in Appanoose County, Iowa, Soap Creek Watershed Site 4-38a remains a vital component in the local water resource and climate resilience efforts. With the support of the Natural Resources Conservation Service and state regulatory agencies, this dam stands as a testament to proactive flood risk reduction measures in the region.