Vancil, also known as the Cecil J. Osborne Dam, is a privately-owned structure located in Snyder, Colorado along the South Platte-OS River. Completed in 1990, this earth dam stands at a height of 40 feet with a hydraulic height of 53 feet and a structural height of 46 feet. It serves primarily for irrigation purposes, with a storage capacity of 9100 acre-feet and a surface area of 306 acres.

This dam, regulated by the Colorado Division of Water Resources, has been assessed to have a significant hazard potential but is currently in satisfactory condition as of the last inspection in May 2019. Despite its high risk assessment, the dam meets regulatory guidelines and is inspected every two years to ensure its safety and effectiveness in water resource management. With no spillway type noted, Vancil plays a crucial role in the local irrigation system and contributes to the water infrastructure in Morgan County, Colorado.

Enthusiasts interested in water resource management and climate impact can appreciate Vancil as a vital structure in the region's water supply network. Its presence along the South Platte-OS River highlights the importance of efficient irrigation systems in agricultural areas. Monitoring its condition and risk assessment is crucial for sustainable water management practices, especially in a state like Colorado that faces various climate challenges. Vancil stands as a testament to the intersection of human infrastructure with natural resources, embodying the delicate balance required for effective water resource management in a changing climate.