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USGS Frequently Asked Questions

USGS FAQ

What volcanoes in the conterminous United States have erupted since the Nation was founded?

Can an eruption at one volcano trigger an eruption at another nearby volcano (for example, within about 10 km)?

Is there evidence for a cause and effect relationship between eruptions that occur at about the same time from volcanoes located hundreds to thousands of km apart?

Is it dangerous to work on volcanoes and what precautions do scientists take?

What kind of school training do you need to become a volcanologist?

What instruments, tools, and methods do you use to study volcanoes?

Is there a relationship between large earthquakes (>M 6) that occur along major fault zones and nearby volcanic eruptions?

Does the U.S. produce any power using natural steam energy?

Water is used for "fish farming?" The U.S. grows fish?

Is saline water used for anything?

How important is ground water?

What is a Topographic Map?

What kinds of water data does the U.S. Geological Survey gather?

What does the term "stream stage" mean?

Does "stage" tell you how much water is flowing in a stream?

We had a "100-year flood" two years in a row. How can that be?

Is measuring water in a well like measuring a stream?

What can cause water levels in wells to change?

If the ground filters water, is ground water always clean?

Where does our household water go after we are done with it?

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