Foss Reservoir

Foss Reservoir is a large body of water in Custer County that stretches across the landscape with a long, irregular shoreline. The water supports multiple recreational areas, boat facilities, and camping grounds distributed along its banks.

This reservoir was built in the late 1950s to early 1960s as part of a basin management project to control river flow and supply water to communities. Since then, it has remained an important part of the region's water infrastructure.

This reservoir attracts fishing communities who spend time pursuing various bass species and catfish year-round. Local visitors view the water as a gathering place where anglers share knowledge and pass time in a natural setting.

The location has several boat ramps and fishing docks, including covered and lighted facilities near developed areas. Campsites with hookups are available if you plan to stay longer and want basic services.

This reservoir was home to an advanced water treatment facility that used electrodialysis to produce drinking water. The facility was upgraded in 2002 to increase its daily output significantly.