Thousands of years ago (13,000 – 17,000) incredible floods shaped Eastern Washington, the Columbia River Gorge and Oregon’s Willamette Valley. The floods occured when a giant ice dam at Glacial Lake Missoula broke and the waters scoured the countryside from here west, with the water eventually making its way to the Pacific Ocean.

Angela Brown, a contributing writer for, recently posted a photo series showing the remnants of Glacial Lake Missoula, a huge lake formed by a giant ice dam. Learn more about the floods by visiting her photo gallery at

July 16, 2009

Related: Missoula


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