County Road 109, located in Lincoln, Minnesota, serves as a vital infrastructure for flood risk reduction along the Yellow Medicine River North Branch. Owned by the local government and regulated by the Minnesota Department of Natural Resources, this rockfill dam stands at a height of 24.5 feet with a storage capacity of 147 acre-feet. Despite its low hazard potential, the dam has not been recently assessed for its condition, posing a potential concern for its long-term effectiveness in mitigating flood risks in the region.

The dam, primarily designed for flood risk reduction, plays a crucial role in safeguarding the surrounding area from potential inundation during periods of high water flow. With a drainage area of 6 square miles, the dam has a length of 460 feet and is situated in a strategic location to control the flow of water and protect the community of Porter. However, the lack of recent inspection and assessment data raises concerns about the dam's structural integrity and its ability to withstand future flood events, highlighting the importance of regular maintenance and monitoring to ensure its continued effectiveness.

As climate change continues to impact water resources and increase the frequency and intensity of extreme weather events, the maintenance and upkeep of dams like County Road 109 become even more critical. With the potential for more frequent and severe flooding in the future, it is essential for local authorities to prioritize the assessment and maintenance of these vital infrastructure assets to ensure the safety and resilience of the community against the growing threats posed by a changing climate.