Greiner Dam, located in Washington, Iowa, is a privately owned structure that serves multiple purposes including fire protection, stock, and a small fish pond. Built in 2005 by the NRCS, this earth dam stands at 29 feet tall and spans 400 feet in length, with a storage capacity of 64 acre-feet. Situated on the TR- West Fork Crooked Creek, Greiner Dam is regulated by the Iowa Department of Natural Resources and undergoes regular inspections to ensure its safety and maintenance.

With a low hazard potential and a moderate risk assessment rating, Greiner Dam is designed to withstand potential emergencies and protect the surrounding area. The dam's spillway type is uncontrolled, with a width of 1 foot, and it has not experienced any modifications since its completion. While the condition of the dam is currently not rated, its risk management measures are in place to address any potential issues that may arise. Overall, Greiner Dam plays a vital role in water resource management and climate resilience in the region, providing essential services while maintaining a focus on safety and sustainability.