Olmschied Dam, located in Plymouth County, Iowa, was completed in 1974 by the USDA NRCS and serves multiple purposes, including fire protection and creating a small fish pond. This private dam is regulated by the Iowa DNR and is inspected and enforced by state authorities. With a height of 25 feet and a length of 480 feet, the dam has a storage capacity of 31 acre-feet and covers a surface area of 2.7 acres.

Despite its low hazard potential, the dam's risk assessment is rated as moderate. The dam has an uncontrolled spillway and is primarily constructed of earth with a soil foundation. While the dam is not currently rated for its condition, it meets state regulatory requirements for inspection and permitting. The surrounding area is at risk of inundation, although emergency action plans and risk management measures have not been reported.

Overall, Olmschied Dam plays a crucial role in water resource management in the region, providing essential services for fire protection and supporting local wildlife. With its location on the TR-West Branch Perry Creek, the dam contributes to the conservation and utilization of water resources in the area. As a key infrastructure maintained by private owners, the dam's safety and regulatory compliance are essential for preserving the surrounding ecosystem and ensuring water security for the community.