USGS Frequently Asked Questions

FAQ's about Floods

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

How can I find flood maps?

What is “El Nino” and what are its effects?

How dangerous is Mount Rainier?

How are floods predicted?

What emergency supplies do I need?

How can I find out about tsunamis?

Why does the USGS collect streamflow data?

What is the greatest hazard presented by Mount Rainier?

How often do giant debris flows occur at Mount Rainier?

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