Cub Creek 15-B is a local government-owned earth dam located in Jefferson County, Nebraska, designed by the USDA NRCS and regulated by the NE DNR. The dam, completed in 1973, primarily serves the purpose of flood risk reduction for the surrounding area. With a height of 26 feet and a hydraulic height of 25 feet, the dam has a storage capacity of 559 acre-feet and covers a surface area of 24 acres, with a drainage area of 1.6 square miles.

Despite being classified as low hazard potential with a satisfactory condition assessment, Cub Creek 15-B undergoes regular inspections every five years to ensure its safety and functionality. The dam's last inspection in May 2016 found it to be in good condition, with no reported issues. The structure has not required any modifications since its completion, reflecting its effective design and construction by the Natural Resources Conservation Service. For water resource and climate enthusiasts, Cub Creek 15-B stands as a testament to successful flood risk management in the region, offering a vital infrastructure for protecting the community from potential water-related disasters.