Nearly 45 years after Mount St. Helens’ eruption sent almost 90 billion cubic feet ... But, when the mountain blew one year later, fine sediment deposited on the riverbed began to slow the percolation ...

This story appears in the May 2010 issue of National Geographic magazine. Beer cans once lay at the bottom of Spirit Lake. Mark Smith remembers them perfectly: 20-year-old Olympia flattops, their ...

following weeks of uncertainty after the federal government’s mass firings earlier this year. Amanda Brewer was fired in February from her job at the Mount St. Helens National Volcanic Monument ...

As Washington State approaches the 45th anniversary of the eruption of Mt. St. Helens on May 18, state officials are ...

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.

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.