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Old Faithful

Yellowstone National Park

Old Faithful Geyser at Yellowstone
Photo: Daniel Mayer License: 1
An eruption from this famous geo-thermal wonder can shoot 3,700 - 8,400 gallons (14,000 - 32,000 l) of boiling water to a height of 106 - 184 feet (30 - 55 m) lasting from 1.5 - 5 minutes.

Old Faithful was named in 1870 during the Washburn-Langford-Doane Expedition and was the first geyser in the park to receive a name.

Old Faithful will erupt 65 minutes after an eruption lasting less than 2.5 minutes or 92 minutes after an eruption lasting more than 2.5 minutes.

Old Faithful Categories

Other Old Faithful Resources

Map of the Area Around
Old Faithful

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