The Saratoga Springs area has the only active spouting geysers east of the Mississippi River in the United States.
The mineral springs for which the area is famous arise from fissures in the Saratoga Fault, which runs 65 miles (105 km) from Whitehall to Albany.
The carbonated water that vents in springs and geysers is rich in minerals and salts.

Two of the most visited springs today are Geyser Island Spouter and Orenda Spring, along Geyser Creek.
Geyser Island Spouter, which sends a narrow plume of water 10 to 15 feet (3 to 5 m) into the air, first emerged in the early 1900s.
Since that time, it has deposited minerals that grow a tufa deposit at the rate of two inches (5 cm) per year.
Orenda Spring has created a massive tufa dome, which continues to fossilize leaves and other debris as it grows.
The Saratoga Springs area has the only active spouting geysers east of the Mississippi River in the United States. The mineral springs for which the area is famous arise from fissures in the Saratoga Fault, which runs 65 miles (105 km) from Whitehall to Albany. The carbonated water that vents in springs and geysers is rich in minerals and salts.
Two of the most visited springs today are Geyser Island Spouter and Orenda Spring, along Geyser Creek. Geyser Island Spouter, which sends a narrow plume of water 10 to 15 feet (3 to 5 m) into the air, first emerged in the early 1900s. Since that time, it has deposited minerals that grow a tufa deposit at the rate of two inches (5 cm) per year. Orenda Spring has created a massive tufa dome, which continues to fossilize leaves and other debris as it grows.
Saratoga Spa State Park