Unocal Storage Pond #3, located in Garfield, Colorado, is a privately owned water storage facility designed by Union Oil. Completed in 1989, this earth dam structure stands at a height of 21 feet and has a maximum storage capacity of 55 acre-feet. The primary purpose of this pond is for tailings storage, with a normal storage level of 28 acre-feet.

This low hazard potential facility has a spillway width of 100 feet and is equipped with uncontrolled spillway type. The dam has a hydraulic height of 8 feet and a structural height of 21 feet, with a length of 1850 feet. While it has not been inspected since November 1995, the risk assessment for Unocal Storage Pond #3 is considered to be moderate (3).

Overall, Unocal Storage Pond #3 serves as a vital water resource infrastructure in the Parachute Creek area, providing essential storage for tailings disposal. With its relatively low hazard potential and moderate risk assessment, this facility plays a crucial role in managing water resources and maintaining environmental sustainability in the region.