Larson Dam 1289 is a local government-owned structure located in Lancaster, Nebraska, along the TR-Little Rock Creek. Built in 1972, this earth dam stands at a height of 25.1 feet and has a storage capacity of 33.2 acre-feet. While its primary purpose is flood risk reduction, it also serves other functions within the region.

Despite being categorized as having a low hazard potential, Larson Dam 1289 has been assessed as being in poor condition as of June 2017. The dam is regulated by the Nebraska Department of Natural Resources, with state permitting, inspection, and enforcement processes in place. With a drainage area of 1.42 square miles and a maximum discharge rate of 229 cubic feet per second, the dam plays a crucial role in managing water resources in the area.

Although Larson Dam 1289 may not be the largest or most high-profile structure, its significance lies in its contribution to local water resource management and flood risk reduction efforts. As climate change continues to impact the frequency and intensity of extreme weather events, dams like Larson Dam 1289 will play an increasingly important role in protecting communities and ecosystems from the threats of flooding and water scarcity.