Old Faithful Inn - Old Faithful Geyser

Old Faithful Inn:
Built during the winter of 1903-04, the Old Faithful Inn was designed by Robert C. Reamer, who wanted the asymmetry of the building to reflect the chaos of nature. The lobby of the hotel features a 65-foot ceiling, a massive rhyolite fireplace, and railings made of contorted lodgepole pine. Wings were added to the hotel in 1915 and 1927, and today there are 327 rooms available to guests in this National Historic Landmark.

Old Faithful Geyser:
• Its eruption length and height, and time between eruptions varies from day to day and year to year
• As of March 2003, the eruption length ranges from 1.5 to 5 minutes; the average interval between eruptions is 94 minutes
• Old Faithful's height ranges from 106 feet to more than 180 feet, averaging 130 feet
• Its average eruption length, height and interval will change again--often as a result of an earthquake
• 3,700 to 8,400 gallons of water are expelled per eruption, depending on the length of eruption
• Just prior to eruption, water temperature at the vent is 204° F / 95.6° C
• Old Faithful is a cone geyser, which erupts in a narrow jet of water, usually from a cone. Fountain geysers, such as Grand (also in the Upper Geyser Basin), generally shoot water in various directions, most often from a pool