Located in Sioux City, Iowa, Gant Creek Watershed Site A-6 is a local government-owned earth dam constructed in 1969 by the USDA NRCS. The dam, with a height of 24 feet and a length of 557 feet, serves multiple purposes including fire protection, stock, small fish pond, and flood risk reduction. With a storage capacity of 60 acre-feet and a surface area of 3 acres, the dam plays a crucial role in managing water resources in the area.

The dam is regulated by the Iowa DNR and is subject to state inspection, permitting, and enforcement. Despite its low hazard potential, the dam is categorized as having a moderate risk level. The site is situated on the TR-Big Sioux River and falls within the jurisdiction of Plymouth County, Iowa. The dam's primary purpose of fire protection and flood risk reduction highlights its importance in safeguarding the surrounding community from potential water-related disasters.

Although the condition assessment of the dam is currently not rated, its structural integrity and functionality are maintained to meet the established risk management measures. With a drainage area of 0.3 square miles, Gant Creek Watershed Site A-6 serves as a vital component of the local water infrastructure, contributing to the overall water resource management efforts in the region.