Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
This is a dynamic list of hot springs in the United States. The Western states in particular are known for their thermal springs: Alaska, Arizona, California, Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Washington, Wyoming; but there are interesting hot springs in other states throughout the country. Indigenous peoples' use of thermal springs can be traced back 10,000 years, per archaeological evidence of human use and settlement by Paleo-Indians. These geothermal resources provided warmth, mineral water, and cleansing. Hot springs are considered sacred by several Indigenous cultures, and along with sweat lodges have been used for ceremonial purposes. Since ancient times, humans have used hot springs and public baths within a long thermal tradition. Bathing in hot, mineral water is an ancient ritual. The Latin phrase sanitas per aquam means "health through water", evoking well-being through bathing in natural hot springs.
Insider tip — The Glenwood Hot Springs Pool at the confluence of the Colorado and Roaring Fork rivers is the largest natural hot spring pool in the world, stretching nearly 130 meters through the dramatic walls of Glenwood Canyon. Sulfurous water has been flowing here since Ute peoples used the springs ceremonially, and the Victorian-era resort buildings add architectural grandeur to the setting. The canyon's sheer red sandstone walls, laced by both Interstate 70 and a freight railway, create an improbable industrial-natural tableau above the steaming water.