Twelve Mile Creek Watershed Site D-44 is a local government-owned flood risk reduction structure located in Grand River, Iowa. Designed by USDA NRCS and completed in 2003, this earth dam stands at a height of 34 feet and stretches 675 feet in length. With a storage capacity of 697 acre-feet and serving a drainage area of 2.54 square miles, the dam helps mitigate flood risks along the TR-Indian Creek.

Managed by the Iowa DNR, this dam has a low hazard potential and a moderate risk assessment rating. While the condition assessment is not rated, the structure is inspected, permitted, and regulated by state agencies to ensure its effectiveness in flood control. Although the emergency action plan status and risk management measures are unspecified, the dam is designed to protect the surrounding area from potential inundation and has been deemed to meet regulatory guidelines.

Overall, Twelve Mile Creek Watershed Site D-44 plays a crucial role in flood risk reduction efforts in Union County, Iowa. With its strategic location along TR-Indian Creek and its storage capacity of 697 acre-feet, this earth dam provides vital protection to the local community against potential flooding events. Through regular inspections and regulatory oversight by the Iowa DNR, the dam continues to serve its primary purpose effectively while maintaining a low hazard potential for the surrounding area.