Long Branch P-4b is a crucial earth dam located in Pawnee, Nebraska, designed by USDA NRCS and completed in 1984 for flood risk reduction purposes. This dam stands at a height of 30 feet with a hydraulic height of 27 feet, providing a structural height of 34 feet. With a storage capacity of 75 acre-feet and a maximum discharge rate of 135 cubic feet per second, Long Branch P-4b plays a significant role in managing water resources in the area.

Owned and regulated by the local government and Nebraska Department of Natural Resources, Long Branch P-4b has a low hazard potential and is deemed to be in satisfactory condition based on the last inspection in June 2016. The dam covers a surface area of 6 acres and serves a drainage area of 0.6 square miles. Positioned along the Long Branch Big Nemaha River, this structure plays a vital role in protecting the surrounding community from flooding events, showcasing its importance in water resource management and climate resilience efforts in the region.

With a primary purpose of flood risk reduction, Long Branch P-4b stands as a testament to effective infrastructure design and management in the face of changing climate patterns. Its significance lies not only in its structural integrity and operational efficiency but also in its contribution to the overall water resource management strategy for Pawnee County. As a key component of the local and state regulatory framework, this dam serves as a beacon of resilience in the battle against climate-related water challenges.