Grand Prismatic Spring
Grand Prismatic Spring is located in Midway Geyser Basin, Yellowstone National Park, and maintains water temperatures around 160 °F (70 °C). This single, mineral-rich hot spring features vibrant microbial mats and deep geothermal activity, attracting scientific and tourist interest.

Grand Prismatic Spring Basic Information
Grand Prismatic Spring Pool Information
Grand Prismatic Spring Amenities & Facilities
Grand Prismatic Spring Additional Information
Grand Prismatic Spring Mineral Content
What to know about Grand Prismatic Spring
What is the location of Grand Prismatic Spring hot spring?
The location of Grand Prismatic Spring hot spring is in Midway Geyser Basin within Yellowstone National Park, situated in Teton County, Wyoming. The geographic coordinates of the hot spring are 44°31′30″N latitude and 110°50′17″W longitude. The hot spring lies in an area not associated with a specific city, and its regional context is defined solely by its position within the national park.
What is the temperature of Grand Prismatic Spring hot spring?
The temperature of Grand Prismatic Spring hot spring is 160 °F, which is equivalent to 70 °C. This high temperature categorizes the spring as a geothermal feature unsuitable for bathing but significant for its hydrothermal activity and microbial ecosystems.
What is the depth of Grand Prismatic Spring hot spring?
The depth of Grand Prismatic Spring hot spring is 160 feet, which corresponds to approximately 50 meters. This measurement makes the spring one of the deepest known hot spring pools in the United States, contributing to its visual and geothermal prominence.
What type of pool does Grand Prismatic Spring hot spring contain?
The type of pool that Grand Prismatic Spring hot spring contains is a single hot spring pool. The spring does not include multiple bathing or soaking pools; it consists of one large geothermal basin formed by natural hydrothermal processes.
What is the water composition of Grand Prismatic Spring hot spring?
The water composition of Grand Prismatic Spring hot spring is mineral-rich. The thermal water contains dissolved minerals that support thermophilic microbial mats, which contribute to the spring’s vivid coloration and chemical diversity.
What attractions are located near Grand Prismatic Spring hot spring?
Attractions located near Grand Prismatic Spring hot spring include Excelsior Geyser, Opal Pool, Turquoise Pool, Firehole River, and Firehole Falls. These geothermal and hydrological features form part of the Midway Geyser Basin, enhancing the scientific and touristic value of the area.
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