West Fork Big Creek Watershed Site S-9, located in Decatur County, Iowa, is a vital water resource managed by the local government and regulated by the Iowa Department of Natural Resources. This Earth-type dam, completed in 1996 by the USDA NRCS, serves multiple purposes including fire protection, stock, small fish pond, and flood risk reduction. With a dam height of 22 feet and a storage capacity of 165 acre-feet, this structure covers a surface area of 8.7 acres and drains a 0.54 square mile watershed.

Despite being classified as having a low hazard potential, the risk assessment for West Fork Big Creek Watershed Site S-9 indicates a moderate level of risk. The dam is currently in a not-rated condition assessment status, with no recent inspection data available. Emergency action plans are not prepared, and there is limited information on risk management measures in place. The structure is associated with the TR- Shain Creek and falls under the jurisdiction of the Rock Island District of the US Army Corps of Engineers, with Congressman David Loebsack representing the area.

Water resource and climate enthusiasts interested in West Fork Big Creek Watershed Site S-9 can appreciate its contribution to local water management efforts and environmental conservation. With its strategic location and multi-purpose design, this dam plays a crucial role in both water supply and flood control for the surrounding community. Continued monitoring and maintenance will be essential to ensure the safety and effectiveness of this important infrastructure in the face of changing climate conditions.