Synthesis and Management Implications of the Colorado River Research Program (Classic Reprint) - Hardcover

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Excerpt from Synthesis and Management Implications of the Colorado River Research Program<br/><br/>Major John Wesley Powell led a small scientific expedition on the first trip down the remote and heretofore unexplored length of the Colorado River and through the foreboding depths of the series of its mighty canyons in 1869. During the subsequent 80 years, no more than 100 venturesome river runners followed his pioneering course. For decades, these stretches of the Colorado River in the Grand Canyon region continued to remain virtually untouched and undisturbed by the activities of modern man. In 1935 changes began; waters of Lake Mead, created by Hoover Dam, intruded for miles into the lower reaches of the Grand Canyon and made this section of the canyon readily accessible by boat. Upper portions of the canyon remained essentially unimpacted by the few boaters who passed through. Here too, however, the situation began to change at first, gradually and then with dramatic acceleration. Bolstered by an awakening challenge of the thrills and delights of river running and the advent of the use of the rubber raft, with its multi passenger capacity, the numbers of boaters increased. Even so, by 1959 the river was annually floated by less than 100 individuals.

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