Weis Dam, located in Union County, Iowa, serves multiple purposes including fire protection and providing a small fish pond. Built in 1971 by the USDA NRCS, this private dam stands at a height of 34 feet and stretches 308 feet in length. With a storage capacity of 41 acre-feet and a surface area of 2.3 acres, Weis Dam helps regulate the flow of the TR-Twelve Mile Creek.

Managed by the Iowa Department of Natural Resources, Weis Dam is classified as having a low hazard potential and a moderate risk rating. Despite not being currently rated for its condition, the dam is regularly inspected, permitted, and enforced by the state regulatory agency. Although it has not undergone any modifications in recent years, Weis Dam continues to play a crucial role in water resource management and climate resilience efforts in the region.

For water resource and climate enthusiasts, Weis Dam stands as a testament to the importance of small-scale infrastructure in maintaining ecological balance and supporting local wildlife populations. With its uncontrolled spillway and soil foundation, this earth dam exemplifies the intersection of human-made structures and natural landscapes. As climate change continues to impact water resources, Weis Dam serves as a reminder of the ongoing need for sustainable water management practices and the crucial role that dams play in mitigating risks and ensuring community safety.