Gibbons Dam, located in Brookings, South Dakota, is a privately owned earth dam designed by the USDA NRCS and completed in 1996. This dam serves the important purpose of regulating the flow of the tributary Deer Creek, with a storage capacity of 242 acre-feet. The dam stands at a height of 21 feet and has a length of 750 feet, making it a significant structure in the area.

The dam has a low hazard potential and is currently not rated in terms of condition assessment. Despite this, it is regulated and inspected by the South Dakota Department of Environment and Natural Resources, ensuring its safety and functionality. The spillway of Gibbons Dam is uncontrolled, with a width of 100 feet, and it has a maximum discharge capacity of 1200 cubic feet per second.

Overall, Gibbons Dam plays a crucial role in water resource management in the region, providing flood control and water storage capabilities. With its moderate risk assessment rating, it is important for authorities to continue monitoring and maintaining the dam to ensure its long-term sustainability and safety for the surrounding community and environment.