Willow Springs #1 is a privately owned dam in Jefferson County, Colorado, that plays a crucial role in water supply and irrigation for the area. Built in 1963, this earth dam stands at a height of 31 feet and has a storage capacity of 140 acre-feet. The dam serves the Turkey Creek-OS river/stream and has a spillway width of 77 feet, with a maximum discharge capacity of 124 cubic feet per second.

Despite its importance, Willow Springs #1 has a high hazard potential and an unsatisfactory condition assessment, as of the last inspection conducted in June 2020. The dam's emergency action plan (EAP) status and risk management measures are unclear, raising concerns about its ability to withstand potential emergencies. This information underscores the need for ongoing monitoring and maintenance to ensure the safety and reliability of this vital water resource infrastructure in the face of changing climate conditions.