Old Faithful

Old Faithful
Old Faithful erupting in 2022
Map
Name originNamed by Henry D. Washburn
September 18, 1870; 154 years ago (1870-09-18)
LocationUpper Geyser Basin
Yellowstone National Park
Teton County, Wyoming, U.S.
Coordinates44°27′38″N 110°49′41″W / 44.46046°N 110.82815°W / 44.46046; -110.82815[1]
Elevation7,349 ft (2,240 m)[2]
TypeCone geyser
Eruption height106 to 185 ft (32 to 56 m)
Frequency60 to 90 minutes
Duration1½ to 5 minutes
Discharge3,700–8,400 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.

  1. ^ "Old Faithful". Yellowstone Geothermal Features Database. Montana State University.
  2. ^ "Old Faithful Geyser". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. June 5, 1978. Retrieved September 18, 2017.
  3. ^ Bauer, Clyde Max (1947). Yellowstone Geysers. Yellowstone Park, Wyoming: Haynes, Inc. OCLC 1517713.
  4. ^ Cite error: The named reference tour was invoked but never defined (see the help page).
  5. ^ Old Faithful Archived February 21, 2012, at the Wayback Machine, Geyser Observation and Study Association, August 17, 2011; "National Park Service Webcam". www.nps.gov. Retrieved January 1, 2017.