Lost Lake, located in Larimer County, Colorado, is a state-regulated fish and wildlife pond with a primary purpose of serving as a habitat for aquatic life. Built in 1929, this Earth dam stands at a height of 15 feet and has a storage capacity of 359 acre-feet. With a surface area of 24 acres and a drainage area of 0, Lost Lake is fed by the Joe Wright Creek and has a maximum discharge capacity of 387 cubic feet per second.

Despite being classified with a low hazard potential and fair condition assessment, Lost Lake poses a high risk due to its location and the surrounding landscape. The dam has not been modified in recent years and was last inspected in 2006, with an inspection frequency of every 6 years. The spillway type is listed as "None," with a spillway width of 10 feet. While the emergency action plan status and risk management measures are not specified, Lost Lake remains a vital resource for fish and wildlife in the area.

Lost Lake, owned by the state of Colorado, is situated in Fort Collins and falls under the jurisdiction of the Colorado Division of Water Resources. With its serene location and vital role in supporting aquatic life, this Earth dam serves as a significant water resource in the region. For water resource and climate enthusiasts, Lost Lake offers a fascinating glimpse into the management and regulation of a crucial fish and wildlife habitat within the state of Colorado.