YNP Thermal Feature: Giantess Geyser

Thermal Map; Firehole River Drainage (Map) -> Upper Geyser Basin (Map) -> Geyser Hill Group -> Giantess Geyser


Enlarge		Credit: NPS

Approximate Location of Giantess Geyser:

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Giantess Geyser
YNP Thermal Inventory ID: UGH039
Lat: 44.4635358
Lon: -110.8289249
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Giantess Geyser, a fountain-type geyser, earns its mighty name during its violent and infrequent eruptions. Multiple water bursts reach between 100 - 200 feet (30-60 m) high. Eruptions generally occur 2 - 6 times a year. The surrounding area may shake from underground steam explosions just before the initial water and/or steam eruptions. Eruptions may occur twice hourly, experience a tremendous steam phase, and continue activity for 4 - 48 hours.

*Adapted from the NPS Old Faithful Area Trail Guide and the Old Faithful Area Interactive Map

Data Available:

YNP Thermal Inventory Data

Date	Description	pH	Temp (°C)	Vent Temp (°C)	Conductance (µmhos/cm)
10/05/1998		8.55	90.4	0	2000

*Indicates an unofficial name

Note: The YNP RCN is working closely with the YNP Spatial Analysis Center to provide the most accurate and up-to-date information on geothermal features, however, errors do exist. Any questions or concerns regarding features found on this site should be directed to the YNP RCN before contacting the Spatial Analysis Center.