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Bonneville Seabase

Grantsville, Utah, United States
Bonneville Seabase
Location
Grantsville, Utah, United States
Water type
thermal
Temperature
40 °C
pH
7.3

Water profile

Thermicity
Sedative
40 °C
LowHigh

Relaxing — deep, immediate muscle release.

Mineralisation
Balancing
LowHigh

Rich in trace elements — gentle on the skin.

Buoyancy
Standard buoyancy
LowHigh

Soft water — natural, classic buoyancy.

BicarbonatesCalcium

Bonneville Seabase, in Grantsville, Utah, taps thermal water at 40°C in an open-air pool. The site, unusual for the region, offers open-air bathing near the Great Salt Lake.

Insider tip — Bonneville Seabase is a landlocked scuba diving and thermal spring site fed by ancient seawater from the Bonneville Salt Flats basin, making it one of the most unusual thermal experiences in the American West. The spring-fed pools maintain a consistent year-round temperature amid the barren salt desert landscape. Divers come for tropical-temperature dives far from any ocean. The surreal juxtaposition of warm clear water and surrounding salt flats is unforgettable.
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Nearby

Frequently asked questions

How hot is the water?
The water runs quite hot here, around 40 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features thermal water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).