Situated on the bank of the Firehole River, Riverside Geyser is one of the most picturesque geysers in the park. During its 20-minute eruptions, a 75 foot (23m) column of water arches gracefully over the river. Eruptions are about 5-1/2 to 6-1/2 hours apart. There is water runoff over the edge of Riverside's cone beginning 90-135 minutes before an eruption.
*Adapted from the NPS Old Faithful Area Trail Guide and the Old Faithful Area Interactive Map
Survey Date: June 19, 1999
Geographic Area: Firehole River Drainage
Thermal Region: Upper Geyser Basin
Thermal Complex: Giant Group
Ranger District Contact: Old Faithful District, Colleen Rawlings (307) 344-2701
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