Henry No. 1 Stock is a privately owned earth dam located in Arvada, Wyoming, along the Kinney Draw river. Built in 1967, it serves multiple purposes including fire protection, stock, and small fish pond. The dam has a height of 28 feet and a hydraulic height of 22 feet, with a storage capacity of 131 acre-feet and a normal storage level of 70 acre-feet. Despite its low hazard potential, the dam is currently in poor condition, with its last inspection in June 2018 revealing the need for maintenance and repairs.

The dam's spillway is uncontrolled, with a width of 70 feet, and there are no outlet gates present. The structure has a surface area of 10 acres and is primarily constructed of earth and stone materials. While the risk assessment for Henry No. 1 Stock is moderate, with a rating of 3 out of 5, there are no specific risk management measures or emergency action plans in place. With its location in a scenic area of Johnson County, Wyoming, this dam serves as a vital resource for water management and wildlife habitat but requires attention to ensure its continued functionality and safety for the surrounding community.

Overall, Henry No. 1 Stock presents a unique blend of historical significance and practical utility as a multi-purpose dam in the heart of Wyoming's countryside. With its age and current condition raising concerns about its long-term viability, stakeholders and water resource enthusiasts are encouraged to monitor the dam's status and advocate for necessary improvements to maintain its important role in supporting fire protection, stock watering, and environmental conservation efforts in the region.