Zimmer Dd No I, also known as Little Delaware Mission Creek FRS 1, is a local government-owned earth dam located in Horton, Kansas. Completed in 1954 by the USDA NRCS, this dam serves the primary purpose of flood risk reduction along Grasshopper Creek. With a height of 34 feet and a length of 1490 feet, Zimmer Dd No I has a storage capacity of 930 acre-feet and covers a surface area of 0.6 acres.

Managed by the Kansas Department of Agriculture, Zimmer Dd No I is classified as a low hazard potential structure with a moderate risk assessment rating. Despite its age, the dam's condition assessment is currently not rated, and it has not been inspected recently. The dam features an uncontrolled spillway with a width of 160 feet and no outlet gates. While it does not have associated structures, Zimmer Dd No I plays a crucial role in protecting the surrounding area from potential flooding events.

As water resource and climate enthusiasts, the information about Zimmer Dd No I provides valuable insights into the infrastructure designed to mitigate flood risks in the region. The dam's location, dimensions, and purpose offer a glimpse into the efforts made by local authorities to safeguard communities and properties from potential water-related disasters. With its state-regulated status and historical significance in flood risk reduction, Zimmer Dd No I stands as a testament to the ongoing commitment to water resource management in Kansas.