Located in Ringgold County, Iowa, the West Fork Big Creek Watershed Site W-28 is a grade stabilization structure designed by the USDA NRCS and completed in 2002. This earth dam stands at a height of 29 feet, with a length of 475 feet, providing a storage capacity of 131 acre-feet for the Tr- Wolf Creek. The dam serves a primary purpose of grade stabilization, helping to manage water flow and prevent erosion in the area.

The West Fork Big Creek Watershed Site W-28 is regulated by the Iowa DNR and undergoes regular inspections, with a low hazard potential and a moderate risk assessment rating of 3. The structure is located in the State of Missouri city, within the Rock Island District, and is owned by the local government. With state permitting, inspection, and enforcement in place, the dam plays a crucial role in managing water resources and mitigating risks in the region.

Overall, the West Fork Big Creek Watershed Site W-28 is a vital infrastructure for water resource management in the area, ensuring the safety and sustainability of the surrounding environment. With its earth dam design and controlled spillway, the structure provides necessary grade stabilization and storage capacity for the Tr- Wolf Creek, contributing to the overall resilience of the region against potential water-related hazards.