Frd No 19, also known as Little Walnut Hickory WS Dam 19, is a flood risk reduction structure located in Butler County, Kansas. Built in 1966 by the USDA NRCS, this earth dam stands at a height of 30 feet and spans a length of 1550 feet. The dam has a storage capacity of 601 acre-feet and serves to protect the surrounding area from potential flooding events in the South Branch Little Walnut River watershed.

Managed by the local government in Leon, Kansas, Frd No 19 is regulated by the Kansas Department of Agriculture and undergoes regular inspections to ensure its structural integrity. With a significant hazard potential and a fair condition assessment, the dam is classified as having a moderate risk level. Despite its age, Frd No 19 continues to play a vital role in flood control and risk reduction efforts in the region, highlighting the importance of maintaining and monitoring water resource infrastructure for climate resilience and public safety.