Hankison is a privately owned dam located in Hot Sulphur Springs, Colorado, along the Walden Hollow river. Completed in 1951 for irrigation purposes, this earth dam stands at a height of 38 feet and has a storage capacity of 181 acre-feet. The dam also serves recreational purposes, with a surface area of 8 acres and a maximum discharge rate of 164 cubic feet per second.

Despite its low hazard potential and satisfactory condition assessment as of 2013, Hankison is subject to regular state regulation, inspection, and enforcement by the Colorado Division of Water Resources. Its uncontrolled spillway and moderate risk assessment highlight the importance of ongoing monitoring and maintenance to ensure the safety and integrity of this essential water resource infrastructure. With its historical significance and continued relevance for irrigation and recreation, Hankison represents a vital component of Colorado's water management system in the face of evolving climate challenges.