Sinnard dam, located in Goshen, Wyoming, was completed in 1935 and serves primarily for irrigation purposes along the Sinnard Draw river. The earth dam stands at a height of 26 feet with a hydraulic height of 21 feet, providing a storage capacity of 1,679 acre-feet and a normal storage of 1,358 acre-feet. The dam covers a surface area of 161 acres and has a spillway width of 100 feet.

Despite being categorized with a significant hazard potential, Sinnard dam is currently assessed as being in fair condition as of the last inspection in May 2017. It is regulated and inspected by the State of Wyoming, ensuring compliance with safety standards and enforcement measures. The dam poses a moderate risk, with risk management measures in place to mitigate any potential issues. For water resource and climate enthusiasts, Sinnard dam presents an interesting case study in the management and maintenance of irrigation infrastructure in the region.