Located in Polk County, Iowa, the Olmstead Dam is a private-owned structure designed by the USDA NRCS and regulated by the Iowa DNR. Completed in 1966, this earth dam stands at a height of 27 feet and stretches 557 feet in length, with a primary purpose of providing fire protection and creating a small fish pond. With a storage capacity of 159 acre-feet, the dam sits on the TR-MUD CREEK, serving as a vital resource for the surrounding area.

Despite being rated as a low hazard potential structure, the Olmstead Dam has a moderate risk assessment score of 3. Although not currently assessed for condition, the dam has not had any reported incidents or inspections since October 1967. With its uncontrolled spillway type and minimal discharge capacity, the dam continues to provide essential services to the community while maintaining a relatively low level of risk.

Water resource and climate enthusiasts will appreciate the Olmstead Dam for its role in fire protection and fish pond creation in the region. With its historical significance and relatively low hazard potential, this earth dam serves as a valuable asset for water management in Polk County, Iowa.