Frd No 35, also known as Upper Black Vermillion WS Dam 35, is a flood risk reduction structure located in Vermillion, Kansas. Built in 1972 by the USDA NRCS, this earth dam stands at a height of 21 feet and has a hydraulic height of 18 feet. With a maximum storage capacity of 129.88 acre-feet and a normal storage capacity of 22 acre-feet, this dam plays a crucial role in managing floodwaters in the Black Vermillion River-TR watershed.

Despite being classified as having a low hazard potential, Frd No 35 serves as an important structure for flood risk reduction in Marshall County. The dam has a spillway width of 40 feet and a surface area of 5.22 acres, helping to mitigate the impact of high water levels during periods of heavy rainfall. While the dam has not been rated for its condition assessment, its role in managing water flow and reducing flood risk is essential for the local community.

With a moderate risk assessment score of 3, Frd No 35 is a key component in the overall risk management strategy for the area. Although the dam does not have a designated Emergency Action Plan (EAP) or updated inundation maps, its presence and functionality contribute to the overall resilience of the region in the face of potential flooding events. As water resource and climate enthusiasts, understanding the role and significance of structures like Frd No 35 is vital for ensuring the sustainable management of water resources in Kansas.