Troutvale #2 (Lower), also known as Lower Browns Lake, is a state-owned fish and wildlife pond located in South Fork, Colorado. Completed in 1940, this earth dam stands at a height of 15 feet and has a length of 375 feet, providing a storage capacity of 600 acre-feet. The primary purpose of this structure is to support fish and wildlife habitats, as well as recreational activities in the area.

With a significant hazard potential and a fair condition assessment, Troutvale #2 (Lower) is regularly inspected and regulated by the Colorado Department of Water Resources. The dam's spillway type is uncontrolled, with one slide (sluice gate) outlet gate for water release. Despite its age, the structure has a moderate risk assessment rating, indicating a proactive approach to risk management measures.

Located on the South Clear Creek, Troutvale #2 (Lower) plays a crucial role in managing water resources and supporting local ecosystems. As a beloved spot for fishing and wildlife observation, this dam serves as a valuable asset for both conservation efforts and recreational enjoyment in the Hinsdale County area of Colorado.