45 years after blast, Mount St. Helens sediment still causes problems
Decades after Mount St. Helens' eruption sent almost 90 billion cubic feet of debris into the upper Toutle Valley, sediment ...
Q&A: Earth scientist discusses the shrinking waters of the Colorado River
Key agreements in the "Law of the River," which encompasses more than 100 years of regulations, laws, court decisions and ...
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45 years after blast, Mount St. Helens’ sediment still causing costly problems
Nearly 45 years after Mount St. Helens’ eruption sent almost 90 billion cubic feet of debris into the upper Toutle Valley, millions of tons of sediment still pour into the Cowlitz River each year. And ...