Frd No 1, also known as Little Delaware Mission Cr WS Dam 1, is a local government-owned structure located in Horton, Kansas. Completed in 1969 by the USDA NRCS, this earth dam stands at a height of 37 feet and has a hydraulic height of 34 feet, serving primarily for flood risk reduction along Grasshopper Creek. With a storage capacity of 266.93 acre-feet and a normal storage level of 36 feet, this dam covers a surface area of 5.61 acres and has a drainage area of 0.63 square miles.

Managed by the Kansas Department of Agriculture, Frd No 1 has a low hazard potential and a moderate risk assessment score. The dam features an uncontrolled spillway with a width of 80 feet and is not equipped with outlet gates. Despite its condition being marked as "Not Rated," the dam undergoes regular state inspections, enforcement, and permitting to ensure its structural integrity and functionality. Situated in Brown County within the Rock Island District, Frd No 1 plays a crucial role in mitigating flood risks and protecting the surrounding community from potential water-related disasters.