Editing Old Faithful (section)

{{Short description|Geyser in Yellowstone National Park in Wyoming, United States}}
{{Other uses}}
{{Use mdy dates|date=September 2017}}
{{Infobox hot spring
| name            = Old Faithful
| photo           = Yellowstone National Park (WY, USA), Old Faithful Geyser -- 2022 -- 2599.jpg
| photo_width     = 250
| photo_caption   = Old Faithful erupting in 2022
| name_origin     = Named by [[Henry D. Washburn]]<br />{{start date and age|1870|9|18}}
| location        = [[Geothermal areas of Yellowstone#Upper Geyser Basin|Upper Geyser Basin]]<br />[[Yellowstone National Park]]<br />[[Teton County, Wyoming]], U.S.
| coordinates     = {{coord|44.46046|-110.82815|display=inline,title}}
| coords_ref      =<ref name="rcn">{{cite rcn|9909|Old Faithful}}</ref>
| elevation       = {{cvt|7349|ft}}<ref>{{cite gnis|id=1592386|name=Old Faithful Geyser|access-date=September 18, 2017|entrydate=June 5, 1978}}</ref>
| hot_spring_type = Cone geyser
| height          = {{cvt|106|to|185|ft}}
| duration        = 1½ to 5 minutes
| frequency       =  60 to 90 minutes

| discharge       = {{cvt|3700|-|8400|USgal|L}}
| depth           =
| map_caption     = Southern section of Upper Geyser Basin
| map_width       =
}}
'''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.<ref>{{cite book |author=Bauer, Clyde Max |title=Yellowstone Geysers |location=Yellowstone Park, Wyoming |publisher=Haynes, Inc |year=1947 |oclc=1517713}}</ref><ref name="tour"/> It is a highly predictable [[Geothermal activity|geothermal]] feature and has erupted every 44 minutes to two hours since 2000.<ref>[http://www.geyserstudy.org/geyser.aspx?pGeyserNo=OLDFAITHFUL Old Faithful] {{Webarchive|url=https://web.archive.org/web/20120221235615/http://www.geyserstudy.org/geyser.aspx?pGeyserNo=OLDFAITHFUL |date=February 21, 2012 }}, Geyser Observation and Study Association, August 17, 2011; {{Cite web|url=https://www.nps.gov/features/yell/webcam/oldFaithfulStreaming.html|title=National Park Service Webcam|website=www.nps.gov|access-date=January 1, 2017}}</ref> The geyser and the nearby [[Old Faithful Inn]] are part of the [[Old Faithful Historic District]].