Glacial Lake Missoula and Its Humongous Floods tells the gripping tale of a huge Ice Age lake that drained suddenly--not just once but repeatedly--and reshaped the landscape of the Northwest. The narrative follows the path of the floodwaters as they raged from western Montana across the Idaho Panhandle, then scoured through eastern Washington and down the Columbia Gorge to the Pacific Ocean.

This heavily illustrated book contains descriptions and geologic interpretations of photographs (mostly aerial) illustrating the power and magnitude of repeated Ice Age flooding in the Pacific Northwest, as recently as 14,000 years ago. The scale of Ice Age floods was so huge that today it is often difficult to see and appreciate the power and magnitude of such megafloods from ground level. However, from the air, landforms created by the floods often come into clear focus. Aerial images, obtained via unmanned aerial vehicle (drone) as well as fixed-wing airplane, add a new perspective on evidence gathered by dozens of scientists since 1923.

Now, nearly 50 years after the first book, Mountain Press is releasing this completely revised full-color second edition that, like so many things in Montana, is big. But consider this: no other place in the world has such amazingly diverse and well-exposed rocks with such dramatic stories.

The land between Idaho and the Cascade Mountains is characterized by gullies, coulees, and deserts--in geologic terms, it is a wholly unique place on the earth. Legendary geologist J Harlen Bretz, starting in the 1920s, was the first to explore the area. Bretz, a former science teacher at Franklin High School in Seattle and then a professor at t...

Revealing the effects of the Lake Missoula Flood in Northwest Oregon and Southwest Washington. Covers the Columbia River Gorge, Clark County Washington, and in Oregon, the Portland Basin, Tualatin, Yamhill and Willamette and Clackamas Valleys. Details visible incoming and outgoing flood channels, erosional remnants, kolks, erratics and other flood evidences visible today.

This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

In the turn-of-the-twentieth-century Northwest, the lives and passions of an American physician and her Swedish naturalist husband helped shape a territory on the cusp of change--from the author of Sources of the River and The Collector. Dr. Carrie Leiberg, a pioneer physician, fought hard for public health while nurturing both a troubled son and a fruit orchard. Her husband, John Leiberg, was a Swedish immigrant and self-taught naturalist who transformed himself from pickax Idaho prospector to special field agent for the US Forest Commission and warned Washington DC of ecological devastation of public lands. The Leiberg story opens a window into the human and natural landscape of a century past that reflects all the thorny issues of our present time.

The fascinating story of how a harsh terrain that resembled modern Antarctica has been transformed gradually into the forests, grasslands, and wetlands we know today.