Ahlswel Dam, located in Furnas, Nebraska, is a privately owned structure that plays a crucial role in flood risk reduction along TR-Deer Creek. Completed in 1960, this earth dam stands at a height of 18.2 meters and has a storage capacity of 90.8 million cubic meters, with a normal storage level of 50.2 million cubic meters. The dam covers a surface area of 8.3 hectares and serves a drainage area of 1.55 square kilometers.

Managed by the Nebraska Department of Natural Resources (DNR), Ahlswel Dam has been deemed to have a low hazard potential and is currently in fair condition, based on a 2014 assessment. While there have been no recent modifications to the dam, regular inspections are conducted every 10 years to ensure its structural integrity and effectiveness in flood control. The dam's primary purpose is flood risk reduction, although it also serves other functions in water management.

With its strategic location and efficient design, Ahlswel Dam stands as a vital infrastructure for mitigating flood risks and protecting the surrounding areas in Furnas County, Nebraska. Its role in water resource management and climate resilience highlights the importance of such structures in safeguarding communities from the impacts of extreme weather events.