Mpd No 21, located in Elk County, Kansas, is a vital water supply infrastructure managed by the local government. This earth-type dam on Wildcat Creek was completed in 1983 and stands at a height of 41.6 feet, with a storage capacity of 7265 acre-feet. The dam serves the primary purpose of water supply, providing a normal storage capacity of 1500 acre-feet and covering a surface area of 185 acres.

Despite its fair condition assessment and high hazard potential, Mpd No 21 is regulated, permitted, inspected, and enforced by the Kansas Department of Agriculture to ensure its safety and functionality. The dam has a spillway width of 300 feet and a drainage area of 7.41 square miles, with a maximum discharge capacity of 17640 cubic feet per second. In the event of an emergency, the dam has a designated inspection frequency of 3 years to assess its structural integrity and risk management measures.

For water resource and climate enthusiasts, Mpd No 21 serves as a critical infrastructure for water supply in the region, highlighting the importance of proper regulation and maintenance to ensure its resilience against potential hazards. With its strategic location on Wildcat Creek and the involvement of various state agencies in its oversight, Mpd No 21 stands as a testament to the collaboration and commitment to safeguarding water resources for the community.