Dd No 105, also known as Allen Creek Watershed Site 105, is a local government-owned structure located in Lyon, Kansas, specifically in the city of EMPORIA. This flood risk reduction dam, designed by USDA NRCS, serves the primary purpose of mitigating potential flooding along the ALLEN CREEK-TR, with a hydraulic height of 20 feet and a structural height of 23 feet. The dam, classified as an Earth dam with a buttress core type, stands at a length of 1050 feet and has a maximum storage capacity of 174.2 acre-feet.

With a hazard potential rated as low and a condition assessment not yet rated, Dd No 105 plays a crucial role in managing water resources in the area. Although it has not been inspected since November 2008, the structure's moderate risk level underscores the importance of ongoing monitoring and maintenance to ensure its continued effectiveness in flood risk reduction. Despite lacking specific risk management measures or emergency action plans, Dd No 105 remains a key asset in safeguarding the community from potential water-related disasters.

As part of the Kansas City District, this dam contributes to the overall water management strategy in the region, highlighting the collaborative efforts between federal and local government agencies in addressing water resource challenges. The structure's location, design, and storage capacity all play a significant role in shaping the local water landscape and demonstrate the importance of proactive infrastructure planning and maintenance for climate and water enthusiasts alike.