Mckinley Clay, located in Huerfano, Colorado, is a historic earth dam constructed in 1911 by the USDA NRCS for irrigation purposes along Muddy Creek. With a height of 33 feet and a length of 545 feet, the dam has a maximum storage capacity of 201 acre-feet and serves multiple purposes including fire protection, livestock watering, and small fish pond maintenance. Despite being categorized as having a low hazard potential, the dam's condition was assessed as unsatisfactory during its last inspection in 2014.

Although Mckinley Clay does not have a spillway, it is regulated by the Colorado Department of Water Resources, with state permitting, inspection, and enforcement procedures in place. The dam is privately owned and situated within the Sacramento District, with its operations overseen by the Natural Resources Conservation Service. The risk assessment for Mckinley Clay indicates a high risk level, emphasizing the importance of ongoing monitoring and management measures to ensure the safety and functionality of this vital water resource infrastructure in Colorado.

As a key feature in the local water management system, Mckinley Clay plays a crucial role in supporting agricultural activities and maintaining water supply reliability in the region. Its historical significance, combined with its strategic location and multi-purpose functionality, highlights the importance of continued monitoring and maintenance to safeguard against potential risks and ensure sustainable water resource management for future generations of water resource and climate enthusiasts in Colorado.