Located in Plymouth County, Iowa, the Gant Creek Watershed Site C-2 is a dam built in 1974 by the USDA NRCS for fire protection, stock, and small fish pond purposes. This earth dam stands at a height of 28 feet and spans a length of 360 feet, with a storage capacity of 55 acre-feet. Situated on the TR-Big Sioux River, this dam plays a crucial role in flood risk reduction for the surrounding area.

Managed by the local government and regulated by the Iowa DNR, Gant Creek Watershed Site C-2 has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. While the dam has not been inspected since 1978, it still serves its purpose effectively, with a moderate risk assessment rating. Despite its age, the dam continues to provide essential water resource management benefits to the region.

As a key infrastructure for water resource management in Sioux City, Gant Creek Watershed Site C-2 is a testament to the importance of maintaining and monitoring dams for both water supply and environmental protection. With its strategic location and design, this dam remains a vital asset for the community, ensuring water security and flood mitigation in the region.