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Oregon's volcanoes have a history of catastrophic eruptions, and they could happen again. Find out what's being done to prepare us all. Columbia river dredge—it's an inquiring look at a high-tech workhorse that keeps the river open for the big ships. And a look at where to find some of the best wildlife viewing in the state.

Segments in this Episode

Oregon Field Guide

Debris Flow

OPB | Feb. 1, 1996 7:30 p.m.

One of the most dangerous effects of volcanic eruption is a debris flow of water and ash.

Oregon Field Guide

Columbia River Dredge

OPB | Feb. 1, 1996 7:30 p.m.

A high-tech dregding ship keeps the channel in the middle of the Columbia River clear.

Oregon Field Guide

Wildlife Viewing

OPB | Feb. 1, 1996 7:30 p.m.

"The Wildlife Viewing Guide" is a book that covers wildlife throughout the state.

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Major Support Provided By: Dorothy D. Gage

Additional Support Provided By: the Coit Family Foundation, Fred and Clara Dolen Charitable Foundation, Kay Kitagawa and Andy Johnson-Laird, Christine and David Vernier, and the Greenfield/Hartline Habitat Conservation Fund of the Nature Conservancy.

Special thanks for support by: The Roundhouse Foundation, Jon and Nancy Decherd, Bonnie and Peter Reagan