Harrison County Roadgrade Dam 18-79-43, located in Iowa along the TR-WILLOW CREEK, was completed in 1959 with a primary purpose of fire protection, stock, or small fish pond. This earth dam stands at a height of 66 feet and stretches 395 feet in length, providing a storage capacity of 486 acre-feet and covering a surface area of 14.1 acres. Managed by the local government and designed by USDA NRCS, this dam is regulated by the Iowa DNR and undergoes regular inspections to ensure its structural integrity and safety.

With a significant hazard potential and a moderate risk assessment rating, Harrison County Roadgrade Dam 18-79-43 is classified as satisfactory in its condition assessment. The dam has a controlled spillway type with a width of 2 feet and is equipped for emergency situations with an inspection frequency of 5 years. The surrounding area, including the Missouri River, benefits from the water resource management provided by this dam, serving as a vital asset for the community's needs for firefighting, livestock, and recreational purposes.

As a part of the local government's infrastructure, this dam plays a crucial role in water resource management and climate resilience in Harrison County, Iowa. With its soil foundation and uncontrolled spillway, the dam serves as a reliable structure for water storage and flood control, ensuring the safety of the surrounding areas. Through continued monitoring and maintenance, Harrison County Roadgrade Dam 18-79-43 remains a key component in the region's efforts to manage water resources effectively and mitigate potential risks associated with dam failure.