“About half of Earth’s geysers are located in Yellowstone National Park in the United States.”
“Precipitation trends and climate changes can affect geysers. Eruption intervals at Old Faithful Geyser have changed in the past, and it even ceased erupting in the 13th and 14th centuries because of a severe drought. How often geysers erupt may change in response to seasonal and decadal changes in precipitation, which affect the supply of groundwater that feeds the eruptions.”