Upper Big Nemaha G-31 is a crucial water resource structure located in Gage County, Nebraska. Managed by the local government and designed by the USDA NRCS, this earth dam stands at a height of 31 feet and serves multiple purposes including flood risk reduction. Completed in 1980, it has a storage capacity of 66 acre-feet and covers a surface area of 4 acres, with a drainage area of 0.3 square miles.

Situated on TR-Hooker Creek, Upper Big Nemaha G-31 is regulated by the Nebraska Department of Natural Resources and undergoes regular inspections to ensure its satisfactory condition. Despite its low hazard potential, the dam plays a vital role in water management within the region. The structure's primary purpose is to mitigate flood risks, showcasing its importance in safeguarding local communities and ecosystems from potential water-related challenges.

With a history of successful operation and maintenance, Upper Big Nemaha G-31 stands as a testament to effective water resource management in the area. Supported by the USDA NRCS and complying with state regulations, this earth dam exemplifies how strategic infrastructure can contribute to climate resilience and sustainable water resource management in Nebraska's landscape.