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“Bite-Size Bits of Local, National, and Global History”
Yellowstone National Park in Park County, Wyoming — The American West (Mountains)
 

Grand Geyser

World’s Tallest Predictable Geyser

 
 
Grand Geyser Marker image. Click for full size.
By Bill Coughlin, July 31, 2015
1. Grand Geyser Marker
Inscription.
Known for the height and beauty of its eruptions, Grand Geyser’s activity is linked with that of nearby geysers. An intricate sequence of events that takes place over 7 to 15 hours culminates in explosions of boiling water and steam from Grand’s pool. A full eruption can last from 9 to 12 minutes and reach heights of 180 feet or more.

Fast Facts:
• Grand Geyser is a fountain-type geyser.
• Grand’s eruptions occur in one or more bursts from its crater or pool. There is a short wait between bursts.
• Turban Geyser erupts every 15 to 22 minutes. Grand erupts at the onset of one of Turban’s eruptions.

The Grand “Group”
The prominent sinter bowl next to Grand Geyser is Turban Geyser. A small crack left of Turban’s sinter shoulder is Vent Geyser. These three geysers share a subterranean source of hot water.

Turban Geyser erupts more frequently than the other two. Grand will erupt just before or after Turban erupts. The water level in Grand fluctuates with each Turban eruption, usually dropping noticeably. As an eruption of Grand Geyser nears, boiling water surges over the rim of its pool. Within seconds, Grand will erupt. Finally, Vent Geyser comes to life, jetting water to heights of 75 feet. Though Grand’s eruptions last only about 10 minutes, Vent and Turban can continue
Grand Geyser Marker image. Click for full size.
By Bill Coughlin, July 31, 2015
2. Grand Geyser Marker
to erupt for an hour or more.
 
Erected by National Park Service.
 
Location. 44° 27.99′ N, 110° 50.243′ W. Marker is in Yellowstone National Park, Wyoming, in Park County. Marker can be reached from Lower Grand Loop Road (U.S. 287), on the right when traveling north. Touch for map. Marker is located in the Upper Geyser Basin in Yellowstone National Park. Marker is in this post office area: Yellowstone National Park WY 82190, United States of America.
 
Other nearby markers. At least 8 other markers are within walking distance of this marker. Beauty and Chromatic Pools (about 800 feet away, measured in a direct line); Crested Pool (approx. 0.2 miles away); Castle Geyser (approx. 0.2 miles away); Giant Geyser (approx. 0.3 miles away); Daisy Geyser (approx. 0.4 miles away); Grotto Geyser (approx. 0.4 miles away); Beehive Geyser (approx. half a mile away); Riverside Geyser (approx. half a mile away). Touch for a list and map of all markers in Yellowstone National Park.
 
More about this marker. Pictures of Vent Geyser, Turban Geyser and Grand Geyser appear at the bottom of the marker. The top right of the marker contains a picture of Grand Geyser’s vent.
 
Categories. Natural Features
 
Marker in the Upper Geyser Basin image. Click for full size.
By Bill Coughlin, July 31, 2015
3. Marker in the Upper Geyser Basin
 
 
Credits. This page was last revised on June 16, 2016. This page originally submitted on September 8, 2015, by Bill Coughlin of North Arlington, New Jersey. This page has been viewed 143 times since then and 32 times this year. Photos:   1, 2, 3. submitted on September 8, 2015, by Bill Coughlin of North Arlington, New Jersey.
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