Lenz Dam, located in Rathbun Reservoir, Iowa, is a privately owned structure designed by the USDA NRCS and regulated by the Iowa DNR. Completed in 1974, this earth dam stands at a height of 25 feet and stretches 336 feet in length, with a storage capacity of 38 acre-feet. Its primary purpose is for fire protection, stock, or as a small fish pond, serving the local community while also contributing to the overall water resource management in the area.

With a low hazard potential and a moderate risk assessment rating, Lenz Dam plays a crucial role in mitigating flooding risks in the region. The dam is equipped with an uncontrolled spillway and is regularly inspected and maintained by state authorities to ensure its structural integrity and safety. Its location on the TR-South Fork Chariton River provides vital water storage and management services, especially during periods of heavy rainfall or drought conditions.

As a key component of the water infrastructure in Wayne County, Iowa, Lenz Dam helps to regulate water flow and provide essential services to the surrounding environment. Managed by private owners and supported by state agencies, this dam exemplifies the importance of sustainable water resource management and climate resilience in the face of changing environmental conditions. Its continued operation and maintenance ensure the safety and wellbeing of local communities while preserving the natural ecosystems of the region for generations to come.