White; H.R. & J.O. Gsd No 66, also known as Little Delaware Mission Cr WS Dam 66, is a vital structure located in Horton, Kansas, owned by the local government. Built in 1956 by the USDA NRCS, this earth dam stands at a height of 29 feet and serves primarily for debris control along the Mission Creek-TR river or stream. With a storage capacity of 134.9 acre-feet and a surface area of 5.46 acres, it plays a crucial role in managing water resources in the area.

The dam's design includes a buttress core type and an uncontrolled spillway with a width of 54 feet. It has a low hazard potential and a moderate risk assessment rating. While the condition assessment is currently not rated, the dam is regulated, inspected, and enforced by the Kansas Department of Agriculture, ensuring its continued safety and functionality. With a drainage area of 0.82 square miles and a maximum discharge of 505 cubic feet per second, White; H.R. & J.O. Gsd No 66 is an essential infrastructure for maintaining water quality and flow in the region.

Overall, White; H.R. & J.O. Gsd No 66 stands as a testament to effective water resource management in Kansas. Its construction and maintenance reflect a commitment to safeguarding the environment and communities against potential hazards. As climate change continues to impact water availability and quality, structures like this play a crucial role in ensuring the resilience and sustainability of our water resources for future generations.