Dd No 155, located in Alta Vista, Kansas, is a vital flood risk reduction structure owned by the local government and regulated by the Kansas Department of Agriculture. Completed in 2002, this earth dam stands at a height of 36.2 feet and has a storage capacity of 134 acre-feet, serving the primary purpose of flood risk reduction along the Mill Creek-TR. With a low hazard potential and moderate risk assessment, Dd No 155 plays a crucial role in mitigating potential flooding events in the region.

Constructed by King Engineering, Dd No 155 spans 950 feet in length and covers a surface area of 2.59 acres, with a drainage area of 0.58 square miles. The dam features an uncontrolled spillway with a width of 40 feet and has no outlet gates or associated structures. Despite its low hazard potential, the dam has not been rated for condition assessment, emphasizing the need for ongoing inspections and risk management measures to ensure its continued effectiveness in flood risk reduction.

As a key component of the flood control infrastructure in Wabaunsee County, Dd No 155 serves as a critical safeguard against potential flood events in the region. With state jurisdiction, permitting, inspection, and enforcement in place, this earth dam stands as a testament to the collaborative efforts between local and state agencies in safeguarding water resources and communities against the impacts of climate change and extreme weather events.