Site No. 129, located in Lyon County, Kansas, is a local government-owned earth dam designed by USDA NRCS and completed in 1988. The primary purpose of this dam is flood risk reduction, with additional benefits including fire protection, stock, or small fish pond management. The dam has a height of 19 feet, a length of 800 feet, and a storage capacity of 123.02 acre-feet, providing essential water resource management for the area.

Situated on Dow Creek-TR, this dam plays a crucial role in managing the water resources in the region. With a low hazard potential and a condition assessment of "Not Rated," Site No. 129 is a vital infrastructure for flood control and water storage. Although the dam has not been inspected recently and lacks certain emergency preparedness measures, its presence serves as a testament to the collaborative efforts between local government and the Natural Resources Conservation Service in safeguarding the community from potential water-related disasters.

As a part of the Kansas City District, this dam contributes to the overall water resource management strategy in the area. While there are no associated structures or locks, the dam's storage capacity and flood risk reduction capabilities make it a valuable asset for climate and water enthusiasts. With its strategic location and design features, Site No. 129 stands as a testament to the importance of sustainable water infrastructure in mitigating the impacts of climate change on local communities.