Steffensen is a privately owned irrigation dam located in Arvada, Wyoming, along Billy Creek. This Earth-type dam stands at a height of 39 feet, with a spillway width of 300 feet, and was completed in 1950. With a storage capacity of 238 acre-feet and a surface area of 53 acres, Steffensen serves the primary purpose of irrigation in the region.

Despite its crucial role in water resource management, Steffensen has been assessed to be in poor condition as of July 2019, with a low hazard potential but moderate overall risk. The dam is inspected every 5 years, with the last inspection conducted in July 2019. Steffensen's risk assessment indicates a moderate risk level, highlighting the importance of ongoing monitoring and maintenance efforts to ensure its continued safe operation.

As a key component of the local water infrastructure, Steffensen plays a vital role in supporting agricultural activities in the area. Climate and water resource enthusiasts would be interested in tracking the maintenance and risk management measures taken to safeguard this essential irrigation structure amidst changing environmental conditions and increasing water demands.