Grand Canyon A Century Of Change

Download or read book Grand Canyon, A Century of Change written by Robert H. Webb and published by University of Arizona Press. This book was released on 2021-11-30 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photographs made in Grand Canyon a century ago may provide us today with a sense of history; photographs made a century later from the same vantage points give us a more precise picture of change in this seemingly timeless place. Between 1889 and 1890, Robert Brewster Stanton made photographs every 1-2 miles through the river corridor for the purpose of planning a water-level railroad route and produced the largest collection of photographs of the Colorado River at one point in time. Robert Webb, a USGS hydrologist conducting research on debris flows in the Canyon, obtained the photographs and from 1989 to 1995 replicated all 445 of the views captured by Stanton, matching as closely as possible the original camera positions and lighting conditions. Grand Canyon, a Century of Change assembles the most dramatic of these paired photographs to demonstrate both the persistence of nature and the presence of humanity. Unexpected longevity of some plant species, effects of animal grazing, and expansion of cacti are all captured by the replicate photographs. More telling is evidence of the impact of Glen Canyon Dam: increased riparian vegetation, new marshes, aggraded debris fans, and eroded sand bars. In the accompanying text, Webb provides a thorough analysis of what each pair of photographs shows and places the project in its historical context. Complementing his narrative are six sidebar articles by authorities on Canyon natural history that further attest to a century of change. The level of detail obtained from the photographs represents one of the most extensive long-term monitoring efforts ever conducted in a national park; it is the most detailed documentation effort ever performed using repeat photography. Much more than simply a picture book, Grand Canyon, a Century of Change is an environmental history of the river corridor, a fascinating book that clearly shows the impact of human influence on Grand Canyon and warns us that its future is very much in our hands.

Download or read book Grand Canyon For Sale written by Stephen Nash and published by Univ of California Press. This book was released on 2017-09-05 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grand Canyon For Sale is a carefully researched investigation of the precarious future of America’s public lands: our national parks, forests, wildlife refuges, monuments, and wildernesses. Taking the Grand Canyon as his key example, and using on-the-ground reporting as well as scientific research, Stephen Nash shows how accelerating climate change will dislocate wildlife populations and vegetation across hundreds of thousands of square miles of the national landscape. In addition, a growing political movement, well financed and occasionally violent, is fighting to break up these federal lands and return them to state, local, and private control. That scheme would foreclose the future for many wild species, which are part of our irreplaceable natural heritage, and also would devastate our national parks, forests, and other public lands. To safeguard wildlife and their habitats, it is essential to consolidate protected areas and prioritize natural systems over mining, grazing, drilling, and logging. Grand Canyon For Sale provides an excellent overview of the physical and biological challenges facing public lands. The book also exposes and shows how to combat the political activity that threatens these places in the U.S. today.

Download or read book Downcanyon written by Ann Zwinger and published by University of Arizona Press. This book was released on 1995-07 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes the river, including ruins, small wildlife, and the experiences of early travelers

Download or read book Damming Grand Canyon written by Diane E Boyer and published by . This book was released on 2007-05-07 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1923, America paid close attention, via special radio broadcasts, newspaper headlines, and cover stories in popular magazines, as a government party descended the Colorado to survey Grand Canyon. Fifty years after John Wesley Powell's journey, the canyon still had an aura of mystery and extreme danger. At one point, the party was thought lost in a flood. Something important besides adventure was going on. Led by Claude Birdseye and including colorful characters such as early river-runner Emery Kolb, popular writer Lewis Freeman, and hydraulic engineer Eugene La Rue, the expedition not only made the first accurate survey of the river gorge but sought to decide the canyon's fate. The primary goal was to determine the best places to dam the Grand. With Boulder Dam not yet built, the USGS, especially La Rue, contested with the Bureau of Reclamation over how best to develop the Colorado River. The survey party played a major role in what was known and thought about Grand Canyon. The authors weave a narrative from the party's firsthand accounts and frame it with a thorough history of water politics and development and the Colorado River. The recommended dams were not built, but the survey both provided base data that stood the test of time and helped define Grand Canyon in the popular imagination. Also by Robert Webb: Lee's Ferry

Download or read book Saving Grand Canyon written by Byron E Pearson and published by University of Nevada Press. This book was released on 2019-09-25 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: 2020 Winner of the Southwest Book Awards 2020 Spur Awards Finalist Contemporary Nonfiction, Western Writers of America The Grand Canyon has been saved from dams three times in the last century. Unthinkable as it may seem today, many people promoted damming the Colorado River in the canyon during the early twentieth century as the most feasible solution to the water and power needs of the Pacific Southwest. These efforts reached their climax during the 1960s when the federal government tried to build two massive hydroelectric dams in the Grand Canyon. Although not located within the Grand Canyon National Park or Monument, they would have flooded lengthy, unprotected reaches of the canyon and along thirteen miles of the park boundary. Saving Grand Canyon tells the remarkable true story of the attempts to build dams in one of America’s most spectacular natural wonders. Based on twenty-five years of research, this fascinating ride through history chronicles a hundred years of Colorado River water development, demonstrates how the National Environmental Policy Act came to be, and challenges the myth that the Sierra Club saved the Grand Canyon. It also shows how the Sierra Club parlayed public perception as the canyon’s savior into the leadership of the modern environmental movement after the National Environmental Policy Act became law. The tale of the Sierra Club stopping the dams has become so entrenched—and so embellished—that many historians, popular writers, and filmmakers have ignored the documented historical record. This epic story puts the events from 1963–1968 into the broader context of Colorado River water development and debunks fifty years of Colorado River and Grand Canyon myths.

Download or read book Carving Grand Canyon written by Wayne Ranney and published by . This book was released on 2005 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carving Grand Canyon provides a synopsis of the intriguing ideas and innovative theories that geologists have developed over time. This story of a fascinating landscape is told in an engaging style that nonscientists will find inviting. The story's end, however, remains a mystery yet to be solved.

Download or read book Encyclopedia of Global Change: J-Z written by Andrew Goudie and published by . This book was released on 2002 with total page 1405 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reference work concentrates upon both the natural and man-made changes to the world's environment. Containing over 300 original, signed articles by distinguished scholars and 1,500 illustrations it is the comprehensive encyclopedia for this multi-discipline, high profile field. Articles fall into the general categories of: concepts of global change, earth and earth systems, human factors, resources, responses to global change agreements and associations, biographies and case studies. The accessible and jargon-free language make it an excellent work for the professional scholar as well as the interested general reader and a detail network of cross references and blind entries will help readers at all levels.