Sieren Dam, located in Coppock, Iowa, is a privately owned structure designed by the USDA NRCS for fire protection, stock, or small fish pond purposes. Completed in 1987, this earth dam stands at a height of 29 feet and spans 460 feet in length, with a storage capacity of 28 acre-feet. The dam is situated on TR- Clear Creek and is regulated by the Iowa Department of Natural Resources, with state permitting, inspection, and enforcement in place to ensure its safety and compliance with regulations.

With a low hazard potential and a moderate risk assessment rating, Sieren Dam is considered to be in satisfactory condition, although it has not been officially rated. The dam's spillway is uncontrolled, and it does not have outlet gates or associated structures. While the dam has not undergone recent inspections or updates to its emergency action plan, it is still considered to meet regulatory guidelines. Overall, Sieren Dam serves as a vital water resource for the area, providing essential services for fire protection and livestock, while also contributing to the local ecosystem as a small fish pond.