Upper Big Nemaha 14-C is a local government-owned earth dam located in Lancaster, Nebraska, designed by the USDA NRCS. It serves the primary purpose of flood risk reduction on the TR-MID BR Big Nemaha River. Completed in 1970, this dam stands at a height of 26 feet and has a structural height of 27 feet, with a storage capacity of 229 acre-feet. With a low hazard potential and satisfactory condition assessment, Upper Big Nemaha 14-C plays a crucial role in mitigating flood risks in the area.

Managed by the NE DNR, the dam is regulated, permitted, inspected, and enforced by the state, ensuring its safety and functionality. Situated in the Omaha District, this dam has a drainage area of 0.4 square miles and a maximum discharge of 513 cubic feet per second. Despite its modest surface area of 7 acres, Upper Big Nemaha 14-C plays a significant role in protecting the surrounding area from potential flooding events. With its stone core and soil foundation, this dam exemplifies effective engineering in flood risk reduction infrastructure.

With a history of regular inspections and a five-year inspection frequency, Upper Big Nemaha 14-C remains a vital asset in the region's water resource management. The dam's emergency action plan status and risk assessment details are currently unspecified, suggesting a potential area for further development in ensuring the dam's resilience to extreme weather events. Overall, Upper Big Nemaha 14-C stands as a testament to proactive flood risk management and the importance of sustainable water resource infrastructure in the face of a changing climate.