The Santa Cruz River that once flowed through Tucson, Arizona is today a sad mirage. Except for brief periods following heavy rainfall, it is bone dry. The cottonwood and willow trees that once lined its banks have died, and the profusion of wildlife recorded by early settlers is nowhere to be seen. As Robert Glennon explains in Water Follies, what killed the Santa Cruz River -- and could devastate other surface waters across the United States -- was groundwater pumping. From 1940 to 2000, the volume of water drawn annually from underground aquifers in Tucson jumped more than six-fold, from 50,000 to 330,000 acre-feet per year. And Tucson is hardly an exception -- similar increases in groundwater pumping have occurred across the country and around the world. In a striking collection of stories that bring to life the human and natural consequences of our growing national thirst, Robert Glennon provides an occasionally wry and always fascinating account of groundwater pumping and the environmental problems it causes. He sketches the culture of water use in the United States, explaining how and why we are growing increasingly reliant on groundwater. Glennon offers a dozen stories, ranging from Down East Maine to San Antonio's River Walk to Atlanta's burgeoning suburbs that clearly illustrate the array of problems groundwater pumping causes. Each episode poses a conflict of values that reveal the complexity of how and why we use water. These poignant and sometimes perverse tales tell of human foibles such as greed, stubbornness, and the unlimited human capacity to ignore reality. As Robert Glennon explores the folly of our actions and the laws governing them, he suggests common-sense legal and policy reforms that could help avert potentially catastrophic effects. Water Follies, the first book to focus on the environmental impacts of groundwater pumping, brings this widespread but underappreciated problem to the attention communities across America.