Frd No 27, also known as Upper Walnut WS Joint District No 33, is a flood risk reduction structure located in Butler County, Kansas. Built in 1977 by the USDA NRCS, this earth dam stands at a height of 36 feet with a length of 2550 feet, providing protection along the Upper Branch Harrison Creek. With a storage capacity of 1871 acre-feet and a surface area of 40.57 acres, Frd No 27 plays a crucial role in managing floodwaters and safeguarding the surrounding area from potential risks.

The dam is regulated by the Kansas Department of Agriculture and undergoes regular inspections to ensure its structural integrity. Despite being categorized with a low hazard potential and a moderate risk assessment, the condition of Frd No 27 has not been rated. With a spillway width of 100 feet and no outlet gates, the dam is designed to handle uncontrolled releases during peak flow events, highlighting its importance in flood control efforts within the region.

As a key infrastructure for flood risk reduction in Butler County, Frd No 27 serves as a vital asset in protecting the community from potential inundation. With its strategic location and design, this earth dam stands as a testament to the collaborative efforts between local government agencies and the USDA NRCS to mitigate the impacts of flooding and safeguard water resources in the region.