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Depression Geyser, Upper Geyser Basin, Yellowstone National Park
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The 1959 Hebgen Lake Earthquake seems to have caused this geyser to become more active. Depression Geyser erupts water 6–10 feet (1.8–3 m) every 8–36 hours. Depression Geyser is a deep blue pool with two main vent openings and a connected smaller pool to the north-northwest. However, it has become less active and more varied in its eruptions since an earthquake in 1983. Eruptions occur every 8–36 hours.
Depression Geyser has an average temperate of 179.2°F (81.8°C), an average pH of 8.6, and an average conductivity of 1854 uS/cm.
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