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On the afternoon of September 18, 1870, the members of the Washburn-Langford- Doane Expedition traveled down the Firehole River from the Kepler Cascades and entere[r]
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Old Faithful is a cone geyser located in Wyoming, in Yellowstone National Park in the United States Old Faithful was named in 1870 during the Washburn-Langford-Doane Expedition and was the first geyser in the park to receive a name It is also called the most predictable geographical feature on Earth erupting almost every 91 minutes The geyser, as well as the nearby Old Faithful Inn, is part of the Old Faithful Historic District
On the afternoon of September 18, 1870, the members of the Washburn-Langford-Doane Expedition traveled down the Firehole River from the Kepler Cascades and entered the Upper Geyser Basin The first geyser they saw was Old Faithful
Eruptions can shoot 3,700 to 8,400 US gallons (14,000 to 32,000 liters) of boiling water to a height of 106 to 185 feet (32 to 56 meters) lasting from 1.5 to minutes The average height of an eruption is 145 feet (44 meters) The highest recorded eruption was 185 feet (56 meters) Intervals between eruptions can range from 45 to 125 minutes, averaging 66.5 minutes in 1939, slowly increasing to an average of 90 minutes apart today The time between eruptions has a bimodal distribution
More than 137,000 eruptions have been recorded Harry Woodward first described a mathematical relationship between the duration and intervals of the eruptions (1938) Old Faithful is not the tallest or largest geyser in the park; that title belongs to the less predictable Steamboat Geyser Its popularity is more likely due to the small eruption window and high frequency
cone geyser Earth minutes. bimodal distribution. Harry Woodward duration intervals Steamboat Geyser.