Long Branch R-15 is a local government-owned earth dam located in Richardson County, Nebraska. Built in 1981 by the USDA NRCS, this dam serves multiple purposes including flood risk reduction. With a height of 31 feet and a length of 633 feet, Long Branch R-15 has a storage capacity of 99 acre-feet and can handle a maximum discharge of 466 cubic feet per second. The dam is regulated by the Nebraska Department of Natural Resources and undergoes regular inspections to ensure its structural integrity.

Despite its low hazard potential and satisfactory condition assessment, Long Branch R-15 is equipped with emergency action plans and meets state guidelines for risk management. The dam is situated on Long Branch Creek and covers a surface area of 5 acres, serving as a vital infrastructure for water resource management in the region. With its stone core and soil foundation, Long Branch R-15 plays a crucial role in protecting downstream areas from potential flooding events, showcasing the importance of proper dam maintenance and oversight in mitigating climate-related risks.