Darrah No. 1, also known as Coe, is a privately owned irrigation dam located in Park County, Wyoming. Completed in 1914, this earth dam stands at a height of 14 feet and has a hydraulic height of 9 feet. With a storage capacity of 285 acre-feet, it primarily serves the purpose of irrigation for the surrounding area. Despite its age, the dam is regulated, inspected, and enforced by the State of Wyoming, ensuring its safety and compliance with regulations.

Although Darrah No. 1 has a low hazard potential, its condition assessment is rated as poor, indicating a need for maintenance and repairs. The last inspection in August 2018 highlighted the dam's risk management measures as high, with a risk assessment rating of 2. While the dam lacks features such as a spillway, it does have a single valve outlet gate for water release. The surrounding Middle Fork Carter Creek benefits from the dam's presence, providing crucial water resources for agriculture and local ecosystems.

As an important piece of infrastructure in the Cody area, Darrah No. 1 showcases the intersection of water resource management and climate resilience. With its historical significance and ongoing regulatory oversight, this dam serves as a reminder of the vital role that irrigation systems play in sustaining communities and ecosystems in arid regions like Wyoming. Despite its current poor condition, efforts to maintain and improve this essential water resource will be critical for its continued function and the well-being of the surrounding area.