Located in Union County, Iowa, Three Mile Creek Watershed Site 9 is a vital earth dam structure designed by the USDA NRCS in 1970 for flood risk reduction along the TR-Three Mile Creek. With a dam height of 31 feet and a length of 410 feet, the site has a storage capacity of 97 acre-feet and covers a drainage area of 0.22 square miles. The dam, primarily owned and regulated by the local government, serves a critical purpose in mitigating flood risks and managing water resources in the region.

Managed by the Iowa DNR, Three Mile Creek Watershed Site 9 has a low hazard potential and moderate risk assessment. While the condition assessment is currently not rated, the dam's integrity and functionality are maintained through regular state permitting, inspection, and enforcement protocols. As a part of the state-regulated system, the site meets guidelines for emergency action planning and risk management measures, ensuring the safety and resilience of the surrounding community in the face of potential water-related challenges.

With its strategic location and essential role in water resource management, Three Mile Creek Watershed Site 9 stands as a testament to the collaborative efforts of local government agencies and the USDA NRCS in safeguarding the region against flooding and enhancing the overall climate resilience of Union County, Iowa. As climate change continues to impact water resources, the site serves as a crucial infrastructure for sustainable water management practices and underscores the importance of proactive measures in adapting to evolving environmental conditions.