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Old Faithful GeyserYellowstone National Park MontanaListing Type: National Historic SiteCity: Yellowstone National Park Montana Region: Yellowstone Country 406-307-344-7381 http://www.nps.gov/yell/home.htm |  More Images |
Old Faithful is undoubtedly the world's best-known geyser and most publicized natural phenomenon of any sort. It is the most consistent geyser in all of Yellowstone Park. Its heights, intervals, and lengths of eruption have varied very little in the past 100 years. Old Faithful has a reputation of erupting every hour on the hour , however it only erupts 18 to 23 times a day, not every hour on the hour. Old Faithful has two types of eruption patterns - short ones that last 1 1/2 to 2 minutes, and long ones that last 3 to 5 minutes. The average eruption heights vary from 130 feet to 184 feet, discharging up to 7,500 gallons of water per eruption. The geyser's average interval between eruptions is currently about 74 minutes.
Directions: Old Faithful is located 16 miles south of Madison Junction, and 30 miles from the West Yellowstone Entrance.
Old Faithful Geyser
Yellowstone National Park, Yellowstone National Park, WY 82190
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