Hraha Dam, located in Martensdale, Iowa, was completed in 2005 by the NRCS and serves multiple purposes including fire protection, stock, and small fish pond. This privately owned earth dam stands at 25 feet high, with a length of 491 feet and a storage capacity of 71 acre-feet. Situated on the TR- MIDDLE RIVER, the dam covers a surface area of 5.2 acres and has a drainage area of 0.29 square miles.

With a low hazard potential and a moderate risk assessment rating, Hraha Dam is regulated and inspected by the Iowa DNR. Although the dam has not been rated for its condition assessment, it meets state permitting, inspection, and enforcement requirements. While the dam's spillway is uncontrolled, it poses minimal risk to the surrounding area. Overall, Hraha Dam plays a crucial role in water resource management, providing essential services while ensuring public safety and environmental protection in Warren County, Iowa.