West Fork Big Creek Watershed Site S-16 is a critical water resource site located in Iowa, specifically in Decatur County. Managed by the local government, this site is regulated by the Iowa Department of Natural Resources and undergoes regular inspections, permitting, and enforcement to ensure its integrity. The dam at this site, completed in 1996, serves multiple purposes including fire protection, stock maintenance, and flood risk reduction.

This Earth type dam stands at a height of 18 feet and has a storage capacity of 77 acre-feet, with a surface area of 4.7 acres and a drainage area of 0.23 square miles. Although the hazard potential is rated as low, the risk assessment indicates a moderate risk level. Despite not having a condition assessment rating, the site is actively managed and meets regulatory guidelines. West Fork Big Creek Watershed Site S-16 plays a crucial role in water resource management and climate resilience efforts in the region, highlighting the importance of sustainable infrastructure for protecting both communities and the environment.