Horseshoe is a federal dam located on the Bradshaw Gulch Tributary in Custer, Idaho. Managed by the Bureau of Land Management, this structure was completed in 1967 with the primary purpose of flood risk reduction. With a hydraulic height of 21 feet and a structural height of 29 feet, Horseshoe has a storage capacity of 20 acre-feet and serves as a vital component in managing the drainage area of 2.2 square miles.

Despite its low hazard potential, Horseshoe has not been rated for its condition assessment, with the last inspection conducted in July 2007. The dam, constructed of buttress and stone, spans a length of 328 feet and plays a crucial role in mitigating potential flood risks in the region. As water resource and climate enthusiasts, understanding the design and functionality of dams like Horseshoe is essential in safeguarding communities and ecosystems against the impacts of extreme weather events and changing hydrological patterns.