Foix Dam, located in Woodbury County, Iowa, is a private-owned structure built in 1992 for fire protection, stock, or small fish pond purposes. This earth dam stands at a height of 40 feet and stretches for 604 feet, with a storage capacity of 143 acre-feet. Situated on the TR-Garretson Ditch, the dam serves the community of Hornick and has a low hazard potential with a moderate risk assessment rating.

Managed by the Iowa Department of Natural Resources, Foix Dam is regulated, permitted, inspected, and enforced by state authorities to ensure its safety and functionality. Despite not being rated for its condition, the dam meets guidelines for emergency action plans and risk management measures. With its uncontrolled spillway and surrounding drainage area of 0.54 square miles, Foix Dam plays a crucial role in water resource management in the region, providing essential services while maintaining a low-risk profile for potential hazards. For water resource and climate enthusiasts, Foix Dam serves as a noteworthy example of private infrastructure contributing to community resilience and environmental stewardship.