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Jim O’Connor is a geologist for the U.S. Geological Survey in Portland, Oregon. He is a Pacific Northwest native long interested in the processes and events that shape the remarkable and diverse scenery of the region. Following this interest with a Geological Science major at University of Washington and M.S. and Ph.D. degrees at University of Arizona, he has spent the last 25 years hiking, wading, boating, studying, and writing about rivers, glaciers, and landscapes of the region.