UGB - Riverside Geyser

Riverside Geyser is one of the more picturesque geysers in the park. Sitting right on the edge of the Firehole River, Riverside Geyser shoots its spray arching over the river. This geyser is one of the most predictable geysers in the park and the visitor center, as well as the sign at the geyser, should have information on the upcoming eruption. Riverside Geyser erupts roughly every 6.5 hours, plus or minus ½ hour.

If you are fortunate enough to see an afternoon eruption on a sunny day, there is a good chance you will see a rainbow in the spray of the geyser. To get the most distinct rainbow, position yourself a little downstream. Eruption can last up to 20 minutes with a height of 75 feet (23m). The best part of the eruption is the beginning when the water is the highest.

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