Quinn No. 1 is a privately owned irrigation dam located on Quinn Creek in Niobrara, Wyoming. Completed in 1959, this earth dam stands at a height of 30 feet and has a storage capacity of 238 acre-feet. The dam serves the primary purpose of irrigation and is regulated by the State of Wyoming, with inspection, permitting, and enforcement measures in place to ensure its safety and functionality.

Despite being categorized as having a low hazard potential, the condition assessment of Quinn No. 1 is rated as fair, with the last inspection conducted in June 2020. The dam features an uncontrolled spillway with a width of 50 feet and a single slide gate outlet. While the risk assessment for this structure is moderate, with a rating of 3, there are currently no documented risk management measures in place to address potential issues or emergencies that may arise.

Situated in a picturesque location in Lusk, Wyoming, Quinn No. 1 plays a crucial role in supporting agricultural activities in the region. With its modest surface area of 16 acres and drainage area of 0 acres, this dam stands as a testament to the vital role of water resources in sustaining the local ecosystem and economy.