Frd No 31, also known as Little Walnut Hickory WS Dam 31, is a crucial water resource structure located in Butler County, Kansas. Constructed in 1967, this earth dam stands at a height of 21.5 feet and serves multiple purposes including flood risk reduction, fire protection, and creating a small fish pond. With a storage capacity of 524 acre-feet and a drainage area of 1.13 square miles, Frd No 31 plays a vital role in managing water flow and mitigating potential flood risks in the area.

Managed by the local government and regulated by the Kansas Department of Agriculture, Frd No 31 is designated as a low hazard potential dam with a moderate risk assessment rating. Despite its age, the dam's condition has not been formally assessed, and its emergency action plan status remains unknown. With an uncontrolled spillway and no outlet gates, Frd No 31 relies on its structural integrity to maintain water levels and protect the surrounding community from potential flooding events.

Overall, Frd No 31 is a key infrastructure asset in the region's water management system, providing essential flood protection and water storage capabilities. As water resource and climate enthusiasts continue to monitor and assess the dam's condition, its role in safeguarding the local environment and residents against potential hazards remains a top priority for the community and regulatory agencies alike.