South Branch 84 is a flood risk reduction structure located in Nebraska, specifically in Otoe County. Managed by the USDA NRCS and regulated by the NE DNR, this earth dam stands at 38 feet high and was completed in 1987. With a primary purpose of flood risk reduction, South Branch 84 has a storage capacity of 244 acre-feet and serves to protect the surrounding area from potential flooding events.

Measuring 910 feet in length, South Branch 84 has a satisfactory condition assessment and a low hazard potential. Despite its low risk, the dam undergoes inspections every 5 years to ensure its structural integrity and functionality. With a drainage area of 1 square mile and a maximum discharge of 278 cubic feet per second, this structure plays a critical role in managing water resources in the region and mitigating flood risks along the TR-S FK Little Nemaha River.

South Branch 84's location in Douglas, Nebraska, highlights its importance in the local community's water resource management efforts. With its effective flood risk reduction capabilities and satisfactory condition, this earth dam stands as a significant infrastructure asset for climate and water resource enthusiasts in the area.