Breitenbush Hot Springs Retreat and Conference Center, commonly called Breitenbush Hot Springs or simply Breitenbush (or even "The Bush" by locals), is a worker-owned resort community featuring holistic and spiritual retreats. It is surrounded by the Willamette National Forest in Breitenbush, Marion County, Oregon, United States, ten miles (16 km) East-northeast (ENE) of the city of Detroit along the West Cascades Scenic Byway and 12 miles (19 km) northwest of Mount Jefferson. The closest metropolitan area, Salem, Oregon, is about 50 miles away. The resort is located at the site of the Breitenbush Hot Springs, which drain into the adjacent Breitenbush River.
Breitenbush Hot Springs has long been the site of natural geothermal springs. It was a frequent gathering place for local Native American groups.The hot springs are borne from precipitation on the surrounding Cascade Range. Analysis of the mineral and chemical content indicates an average subsurface temperature of 356 °F (180 °C) and a migration time of several thousand years.The water's long contact with aquifer rock at such temperatures saturates it with dissolved minerals such as sulfate, calcite, analcime, anhydrite, chalcedony, microcline, muscovite, quartz, wairakite and the elements potassium, sodium, magnesium, calcium and lithium.
The surface temperature of the springs is about 180 °F (82 °C)—the lower temperature due to heat transfer to cooler rock near the Earth's surface.Heat for the buildings is from one of two wells. To prevent mineral precipitation in the pipes, the wells are fitted with heat exchangers using closed loop water circulation. The drilled wells are approximately 500 feet (150 m) deep and produce circulating water at about 190 °F (88 °C) which is distributed through radiators in each building.