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Opal Pool is a hot spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming.Opal Pool usually has a temperature of approximately 132 °F (56 °C). [1] Though usually active as a hot spring, Opal Pool is considered a fountain-type geyser.
Hot springs in the Black Sand Basin are Emerald Pool 154.6 °F (68.1 °C), Rainbow Pool 161 °F (72 °C), Sunset Lake 180 °F (82 °C), Opalescent Pool 144 °F (62 °C) and Green Spring. Cliff Geyser 191.8 °F (88.8 °C) and Spouter Geyser 199.9 °F (93.3 °C) are also located in the basin, alongside Iron Spring creek. [4]
Old Faithful is a cone geyser in Yellowstone National Park in Wyoming, United States. It was named in 1870 during the Washburn–Langford–Doane Expedition and was the first geyser in the park to be named. [3] [4] It is a highly predictable geothermal feature and has erupted every 44 minutes to two hours since 2000. [5]
Turquoise Pool is a hot spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming. Turquoise Pool has a temperature between 142 and 160 °F (61 and 71 °C) and was named by members of the Hayden Expedition of 1878. [2
Doublet Pool is a hot spring in the Upper Geyser Basin of Yellowstone National Park, Wyoming. Doublet Pool is 8 feet (2.4 m) deep and its temperature is approximately 194.4 °F (90.2 °C). [3] Its scalloped edge is made of geyserite. Eruptions can occur in Doublet Pool, but only last up to 8 minutes.
The geyser Old Faithful was named on this day in history, Sept. 18, 1870, after an explorer noticed the eruptions were quite "faithful." It remains a popular tourist attraction.
Temperature 164 to 175 °F (73 to 79 °C) [ 2 ] Chromatic Spring is a hot spring in the Upper Geyser Basin of Yellowstone National Park in the United States .
Lower Geyser Basin, Yellowstone National Park, Wyoming Coordinates 44°32′11″N 110°48′00″W / 44.536424°N 110.7998826°W / 44.536424; -110.7998826