Christensen No. 1 is a privately owned irrigation dam located on the Coates Draw River in Johnson, Wyoming. Completed in 1987, the dam stands at a height of 55 feet and has a hydraulic height of 50 feet, serving a primary purpose of irrigation for the surrounding area. With a storage capacity of 402 acre-feet and a surface area of 21 acres, the dam plays a crucial role in managing water resources in the region.

The dam is constructed primarily of earth and stone materials, with a slide (sluice gate) as its outlet gate. Despite its age, Christensen No. 1 is in fair condition according to the latest inspection conducted in May 2021, with a low hazard potential. The dam is regulated and inspected by the state of Wyoming, ensuring its continued safe operation for both irrigation and fish and wildlife conservation purposes. As a significant piece of infrastructure in the area, the dam contributes to the management of water resources and climate resilience in this part of Wyoming.

Overall, Christensen No. 1 is a vital component of the water infrastructure in Johnson County, Wyoming, providing essential irrigation water for agricultural activities in the region. With its low hazard potential and fair condition, the dam continues to serve its intended purposes while being subject to regular inspections and state regulations. Its presence on the Coates Draw River contributes to the conservation of water resources and supports the local ecosystem, making it a key asset for water resource and climate enthusiasts in the area.