Riverside Geyser, Geyser in Upper Geyser Basin, Yellowstone National Park, Wyoming, US
Positioned on the bank of the Firehole River, Riverside Geyser propels water in a 75-foot arc that extends over the flowing water below.
The Hayden Geological Survey team documented and named this natural formation in 1871 during their exploration of Yellowstone National Park.
Scientists and researchers study the geyser's consistent eruption patterns to understand the complex underground systems that drive geothermal activity.
Visitors can observe eruptions every 5.5 to 7 hours, with water displays lasting approximately 20 minutes and reaching temperatures of 179.8 degrees Fahrenheit.
The interaction between the geyser's spray and sunlight produces rainbows during eruptions, while water falls directly into the Firehole River.
Location: Wyoming
GPS coordinates: 44.47350,-110.84000
Latest update: March 5, 2025 01:22
Geysers represent some of the most visible expressions of hydrothermal activity, occurring where underground water reservoirs are heated by magmatic sources. Yellowstone National Park in Wyoming holds more than half of the world's known geysers, including Old Faithful with its reliable eruptions every 90 minutes and Steamboat, the tallest active geyser on Earth. Iceland offers the Haukadalur Valley, home to the namesake Geysir and Strokkur, which erupts every few minutes. The high plateau of El Tatio in Chile sits at 14,100 feet (4,300 meters) and forms the highest elevation geyser field in the world. Other notable locations include the Whakarewarewa thermal area in Rotorua on New Zealand's North Island, where the Pohutu geyser performs regularly, and the Valley of Geysers in Russia's Kamchatka Peninsula. These sites demonstrate the ongoing volcanic activity beneath the Earth's surface and attract visitors interested in observing natural thermal phenomena. Eruption patterns vary in frequency and intensity, with some geysers following predictable schedules while others remain irregular.
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