Middle Big Nemaha 46, located in Tecumseh, Nebraska, is a vital structure designed by USDA NRCS to reduce flood risk along the Lost BR Tr-Yankee Creek. Completed in 1995, this earth dam stands at a height of 48 feet and has a normal storage capacity of 292 acre-feet, with a maximum storage of 3152 acre-feet. Its primary purpose is flood risk reduction, serving as a crucial defense mechanism for the surrounding area.

With a low hazard potential and a satisfactory condition assessment as of June 2016, Middle Big Nemaha 46 is a reliable structure that has been diligently maintained over the years. The dam boasts a structural height of 59 feet and a length of 1122 feet, showcasing its robust design and construction. The dam's location within the Omaha District and its regulatory oversight by the NE DNR highlight the collaborative efforts in place to ensure its continued effectiveness in protecting the community.

As a key component in the water resource management infrastructure of Johnson County, Nebraska, Middle Big Nemaha 46 plays a crucial role in safeguarding the local ecosystem and residents from the impacts of flooding. With its strategic positioning and solid foundation, this earth dam stands as a testament to effective engineering and proactive risk reduction measures in the face of climate variability and extreme weather events.