James Marion Yoast is a private earth dam located in Craig, Colorado, along Yoast Creek. Built in 1909 for irrigation purposes, this dam stands at a height of 23 feet and has a length of 545 feet, with a storage capacity of 360 acre-feet. Despite its age, the dam is considered to have low hazard potential and is in fair condition as of the last inspection in October 2015.

Managed by the Colorado Division of Water Resources, James Marion Yoast plays a crucial role in providing water for irrigation, fire protection, stock, small fish ponds, and general water supply in the region. The dam is regulated and inspected by the state to ensure its safety and compliance with regulations. With a spillway width of 24 feet and a maximum discharge of 42 cubic feet per second, the dam is equipped to handle controlled releases during periods of excess water.

Enthusiasts of water resources and climate in the area can appreciate the historical significance and functionality of James Marion Yoast as a vital piece of infrastructure supporting agricultural and environmental needs in Routt County, Colorado. Its location along Yoast Creek and its impact on the surrounding area make it an interesting site for those interested in water management and sustainability efforts in the region.