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Volcanic Debris Flow

Oregon's volcanoes have a history of catastrophic eruptions. One effect of an eruption is a debris flow, which is like a flash flood of ash and debris as thick as wet cement. Since the eruption of Mount St. Helens in 1980, scientists have been studying this phenomenon more closely.

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Columbia River Dredge

A high-tech workhorse keeps the Columbia River deep enough for the big ships. The Army Corps of Engineers has to keep dredging the same spots over and over to keep the minimum depth of 40 feet.

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Wildlife Viewing

From seals to elk, "The Wildlife Viewing Guide" is a book full of tips on where to find some of the best wildlife viewing in the state. The publishers hope it will also get folks involved in conservation.

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