Located in Sioux City, Iowa, the Gant Creek Watershed Site D-3 is a vital water resource managed by the local government with oversight from the Iowa Department of Natural Resources. Designed by the USDA NRCS, this earth dam serves multiple purposes including fire protection, stock, small fish pond, and flood risk reduction. Completed in 1967, the dam stands at a height of 36 feet with a length of 447 feet, providing a storage capacity of 64 acre-feet and covering a surface area of 5.2 acres.

The Gant Creek Watershed Site D-3 is regulated and inspected by the Iowa DNR, with a low hazard potential and a moderate risk assessment rating. While the condition assessment is currently not rated, the dam meets state permitting and inspection requirements. The dam's primary purpose of fire protection and flood risk reduction highlights its importance in ensuring water security for the local community, especially along the TR-Big Sioux River. With a commitment to effective risk management measures, the site plays a crucial role in maintaining water quality and quantity in the region.

As a key component of the local water infrastructure, the Gant Creek Watershed Site D-3 represents a significant investment in water management and conservation efforts. Its strategic location, design, and operational features demonstrate a proactive approach to addressing water resource challenges in the area. With continued collaboration between local government, regulatory agencies, and stakeholders, the site contributes to sustainable water resource management practices and climate resilience in the region.