South Branch 1-6 is a local government-owned earth dam located in Douglas, Nebraska, along the TR-S FK Little Nemaha River. Built in 1992 by the USDA NRCS, this structure serves multiple purposes including flood risk reduction. With a dam height of 26 feet and a hydraulic height of 19 feet, it has a capacity of 132 acre-feet and covers a surface area of 6 acres. The dam is regulated by the Nebraska Department of Natural Resources and undergoes regular inspections to ensure its satisfactory condition.

Despite its low hazard potential, South Branch 1-6 plays a crucial role in mitigating flood risks in the region. The dam's structural integrity and satisfactory condition are maintained through routine inspections, with the last assessment conducted in May 2020. With a drainage area of 0.5 square miles and a maximum discharge capacity of 48 cubic feet per second, this earth dam provides essential protection to the surrounding community and infrastructure. Its location in Otoe County, Nebraska, highlights its significance in managing water resources and climate-related challenges in the area.

As part of the flood risk reduction infrastructure, South Branch 1-6 contributes to the overall resilience of the region against potential water-related disasters. The dam's design by the Natural Resources Conservation Service reflects a commitment to sustainable water management practices. With state-regulated permitting, inspection, and enforcement processes in place, this earth dam stands as a testament to collaborative efforts in safeguarding communities and ecosystems from the impacts of extreme weather events.