This comprehensive study of the hydrology and geology of the American Southwest is a must-read for anyone interested in earth sciences, natural resources, or environmental engineering. Based on the latest research and field observations, the author provides a detailed analysis of the sources, properties, and distribution of underground water, as well as their impact on the landscape and human activities. Illustrated with maps, graphs, and photographs, this book is an essential reference for professionals and students alike. 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. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.