The Washington County Conservation Board Dam, located in Coppock, Iowa, serves the primary purpose of grade stabilization along the TR- Skunk River. Constructed in 2000 by the NRCS, this earth dam stands at a height of 29 feet and stretches 325 feet in length, with a storage capacity of 33 acre-feet. The dam is classified as having a low hazard potential and a moderate risk level, making it an essential structure for managing water resources in the area.

Despite not being regulated or inspected by state agencies, the Washington County Conservation Board Dam plays a crucial role in flood control and water management in the region. With a spillway type of uncontrolled and a surface area of 2 acres, this dam helps mitigate the risk of flooding and provides essential support for the surrounding ecosystem. The proximity of the dam to the Skunk River highlights its significance in preserving water quality and ensuring the stability of the local environment for both wildlife and residents.

As a key feature in the Rock Island District, the Washington County Conservation Board Dam contributes to the overall water infrastructure of the area, with its stone core and soil foundation enhancing its structural integrity. While currently not rated for condition assessment, this dam remains a vital asset for Washington County, demonstrating how local governments can effectively manage water resources and address climate-related challenges through strategic infrastructure development.