Old Faithful | |
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![]() Old Faithful erupting in 2022 | |
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Name origin | Named by Henry D. Washburn September 18, 1870 |
Location | Upper Geyser Basin Yellowstone National Park Teton County, Wyoming, U.S. |
Coordinates | 44°27′38″N 110°49′41″W / 44.46046°N 110.82815°W[1] |
Elevation | 7,349 ft (2,240 m)[2] |
Type | Cone geyser |
Eruption height | 106 to 185 ft (32 to 56 m) |
Frequency | 60 to 90 minutes |
Duration | 1½ to 5 minutes |
Discharge | 3,700–8,400 US gal (14,000–32,000 L) |
Old Faithful is a cone geyser in Yellowstone National Park in Wyoming, United States. It was named in 1870 during the Washburn–Langford–Doane Expedition and was the first geyser in the park to be named.[3][4] It is a highly predictable geothermal feature and has erupted every 44 minutes to two hours since 2000.[5] The geyser and the nearby Old Faithful Inn are part of the Old Faithful Historic District.
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