Fish Lake, located in Ravalli County, Montana, is a federal-owned water resource managed by the USDA Forest Service. Built in 1927, this Earth dam serves multiple purposes including fire protection, stock watering, and as a small fish pond for recreational activities. With a dam height of 26 feet and a storage capacity of 400 acre-feet, Fish Lake covers a surface area of 6 acres and is fed by the South Fork Lost Horse Creek.

Despite being categorized as having a low hazard potential, Fish Lake's condition assessment remains unrated as of the last inspection in March 2017. The dam features an uncontrolled spillway and outlet gates, with a moderate risk assessment rating. While no emergency action plan has been reported, the site's risk management measures and inundation maps status are also unknown. With its picturesque location and diverse purposes, Fish Lake stands as a vital water resource in the region, attracting enthusiasts interested in water conservation and climate-related activities.

Surrounded by the stunning wilderness of Hamilton, Montana, Fish Lake remains a focal point for water resource and climate enthusiasts. As a key component of the region's ecosystem, the lake not only serves practical purposes such as fire protection and stock watering but also offers recreational opportunities for visitors. Given its historical significance dating back to 1927 and the Forest Service's role in its maintenance, Fish Lake continues to be a captivating destination for those interested in the intersection of water management, climate resilience, and environmental conservation.