Morning Glory Pool

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Morning Glory Pool
Morning Glory Spring
Name originNamed by Mrs. E. N. McGowan, wife of Assistant Superintendent Charles McGowan, 1883
LocationYellowstone National Park, Teton County, Wyoming, USA
Coordinates44°28′30″N 110°50′37″W / 44.4750325°N 110.8435128°W / 44.4750325; -110.8435128[1]
Elevation7,300 feet (2,225 m) [2]
TypeHot spring
Temperature69.8 °C (157.6 °F)[1]
Depth23 feet (7 m)
Northern section of Upper Geyser Basin

Morning Glory Pool is a hot spring in the Yellowstone Upper Geyser Basin of the United States. The spring is also known by the name Morning Glory Spring.


The pool was named by Mrs E. N. McGowan, wife of Assistant Park Superintendent, Charles McGowan in 1883. She called it "Convolutus", the Latin name for the morning glory flower, which the spring resembles. By 1889, the name Morning Glory Pool had become common usage in the park.[3] The feature has also been known as Morning Glory Spring.[4][5]


The distinct color of the pool is due to bacteria which inhabit the water. On a few rare occasions the Morning Glory Pool has erupted as a geyser, usually following an earthquake or other nearby seismic activity.

Several entryways have been clogged due to objects being thrown in by tourists, reducing the hot water supply, and in turn altering the overall appearance of the pool. Several attempts by park officials to artificially induce eruptions to clear the pool of debris and clear blocked entryways have been met with mixed results.[6] An interpretive sign, placed near the pool by the park service, discusses the damage caused by ignorance and vandalism and suggests that Morning Glory is becoming a "Faded Glory."[7]


  1. ^ a b "Morning Glory Pool". Yellowstone Geothermal Features Database. Montana State University.
  2. ^ "Morning Glory Pool". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
  3. ^ Haines, Aubrey L. (1996). Yellowstone Place Names-Mirrors of History. Niwot, Colorado: University Press of Colorado. p. 153. ISBN 0-87081-382-X.
  4. ^ "Morning Glory Spring, Yellowstone Park Asahel Curtis (1874-1941)". Amon Carter Museum of Art. Retrieved 4 November 2021.
  5. ^ "Morning Glory Spring". Fine Arts Museums of San Francisco. Retrieved 4 November 2021.
  6. ^ "Morning Glory Pool". National Park Service. Archived from the original on 15 October 2011. Retrieved 29 January 2009.
  7. ^ "Point of Interest Road Signs - Fading Glory". National Park Service sign. Photo by Point of Interest Road Signs. June 2008. Archived from the original on 15 July 2011. Retrieved 15 June 2009.


See also[edit]

List of hot springs in the United States