What is remarkable, a hundred years later, is how little has changed. The disaster that Powell predicted—a catastrophic return to a cycle of drought—did indeed occur, not once but twice: in the late 1800s and again in the 1930s. When that happened, Powell’s ideas—at least his insistence that a federal irrigation program was the only salvation of the arid West—were embraced, tentatively at first, then more passionately, then with a kind of desperate insistence. The result was a half-century rampage of dam-building and irrigation development which, in all probability, went far beyond anything
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