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Three Sisters Springs
Three Craters Filled With Pale Blue Water
Hot Spring
in
Myriad Group
,
Upper Geyser Basin
on
Firehole River
,
Myriad Creek
in
Yellowstone NP
,
Rocky Mountains
near
Old Faithful
,
WY
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North Sister Spring
This water filled crater closest to the Three Sister Road is the most active spring and contains the active Mugwump Geyser (near right side vent), the active Three Crater Geyser (back left vent), and the seldom active third vent UNNG-MYR-1 9 (near the front rim).
Mugwump Geyser eruption in North Sister Spring of the Three Sisters Springs, , Jacob W. Frank (NPS) photograph above.
Middle Sister Spring
Active eruptions were observed for a period after the 1959 earthquake, then again in 2005, and most recently in 2017.
South Sister Spring
No verified vent eruptions.
Sources
Bryan, T.Scott. The Geysers of Yellowstone. Fifth Edition. University Press of Colorado, 2018. Kindle. Three Sisters Springs
Taxonomy
Classified As
Hot Spring
Waterbodies
Firehole River
River
Myriad Creek
Creek
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